I seem to have a little problem as I played through the Dragonborn DLC from Skyrim...  Recently I've run into a problem that's beginning to frustrate me...and that is that I have a Riekling hunter as a pet/follower as well as a custom one. I decided that I no longer needed the Riekling for assistance and wanted to dismiss him. So I went through the dialogue to do that and the message says that "my pet went home" or something like that. Problem is...he still follows me around and the dialogue still treats him as a follower!   I'm using Amazing Follower Tweaks but I'm not sure if AFT also works on Rieklings because I tried uninstalling and reinstalling the mod but that didn't do anything, though trying to play the game without the mod caused some very wierd things to happen like slowing my game down to 1 FPS and having the game kind of flash between low and super high brightness.  I've tried setting the Riekling follower to non-essential and tried the console kill command on him, which didn't work. I also tried to get a dragon to attack him and kill him, that didn't work, he didn't lose any health at all as if he's invincible. My other custom follower works just fine and as intended. I also tried the set playerfollowercount to 0 command that only made my custom follower leave. If anybody asks, I did complete the Thirsk Mead Hall quest.   I don't know what else I can do to try get rid of him. I really don't want to be stuck with him for the rest of my playthrough of Skyrim, but at the same time I don't want to restart the game...  If anybody has any ideas or can help please let me know!


What's the methodology for naming groups of animals?

Don't you find the words to name various groups of animals strange? Here are just some examples:   Group of cats (wild): Destruction Group of crows: Murder Group of ravens: Unkindness Group of rhinos: Crash Group of seabirds: Wreck Group of trout: Hover Group of wombats: Wisdom   What the heck?!


How to change hotkey that switches keyboard layouts?

I use Windows 10. I use the hotkey Windows-Space to switch keyboard layouts (between QWERTY and Colemak). This is a built-in feature of Windows 10.  The Windows-Space hotkey is inconvenient because I often hit it by accident. How  can I change the shortcut to left-altright-alt?


Where to farm the basic upgrade materials?

I've been playing destiny for about 2 months now, and even though I've managed to collect quite a few legendaries and a couple of exotics, I can't find good, reliable farming circuits to obtain the four basic materials.  I'm looking for circuits for:  Spinmetal  Helium Filaments  Spirit Blooms  Relic Iron  Videos or detailed instructions please. Thanks.


AutoScroll on chat exchange doesn't work in chrome 61

I updated the chrome to version 61, and the auto-scroll stopped working, it is necessary to scroll down the page manually. The problem does not occur in the previous version or in firefox.  Also, the reply icon no longer working when the message replied to is not in the current chat page. (Middle click still works and opens the link in new tab.)


Slow wifi in ubuntu 14.04 with realtek wifi adapter

Bus 009 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 002: ID 041e:4055 Creative Technology, Ltd Live! Cam Video IM Pro Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 008 Device 002: ID 046d:c318 Logitech, Inc. Illuminated Keyboard Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 007 Device 003: ID 045e:02d1 Microsoft Corp.  Bus 007 Device 002: ID 046d:0a44 Logitech, Inc.  Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 002: ID 0781:5583 SanDisk Corp.  Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 002: ID 1b1c:1b05 Corsair  Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS] Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


What should I look for when shopping for my first mirrorless camera?

I'm looking to buy a new camera. I've looked at  and decided that mirrorless is right for me. But what next?   What should I be looking for when shopping for a mirrorless interchangeable lens camera (and what should I not be concerned with)?


I am trying to use the tensorflow-gpu, however tensorflow only supports CUDA 10.0 and not 10.1. It seems that only CUDA 10.1 is available from the apt repository provided by nvidia. I have searched in vain for a way to install CUDA 10.0 on my Ubuntu 18.10. It does seems possible on Ubuntu 18.04.  How do I install CUDA 10.0 on Ubuntu 18.10?


I have a Samsung Series 7 with the Radeon 6750M switchable graphics. The ATI software lets you force programs to use the dedicated card. However, I'm not convinced it is actually ever using it, as the frame rates on some non-taxing games (Portal, TF2) are merely OK. To make matters worse, it looks like the ATI Catalyst Control has vanished from my laptop. To make it even worse, you can't download the driver and ATI CCC from ATI's site, you need to download it from Samsung, and the ZIP they provide is corrupted.   How can I ensure my Samsung Series 7 is actually using the Radeon switchable graphics?


What is the proper verb to use instead of "being at the same time with" in this specific sentence?

I want to tell a professor that I can not attend the meeting because it is at the same time as my class and ask them to change the meeting time. My question is, what is the correct word to use rather than "interfere" or "overlap"?  The time you gave me for the weekly check-in meeting interferes/overlaps with my X class, which starts at 11:30. Can I come at a different time?  Also, I am using "The time you gave me" because it is a long meeting with different students, and each student is given a specific time to go. If you have a better suggestion for that, that would be great too.


To my knowledge there are three types of acceleration when a body (e.g. a rod) is moving in a circle about an axis. These are:   Angular acceleration : this is the rate of change of angular velocity. Tangential acceleration : this is the linear acceleration of the system in a tangential direction to the circle and equals the radius times the angular acceleration. Radial/centripetal acceleration : this is the linear acceleration of the system that is directed inwards towards the center of the circle.   I also think there are two types of velocity:   Linear velocity: this is its velocity in the tangential direction and is constantly changing Angular velocity or angular frequency: this is the rate of change of angle.   Is the above correct? And have I missed anything?


I’ve got a large design format to print. The original image resolution is about 3000 px - 4500 px & resolution is 300. I worry if we blow up the image to the truck size 590 x 200 CM, the resolution will be terrible. What is the correct resolution for thé truck size i mentioned? How can I find a high res image to suite that size.


I am using Blenders Video Sequence Editor and it won't let me render it. The message:      Timebase 20999/500000 not supported by MPEG 4 standard, the maximum admitted value for the Timebase denominator is 65535     keeps popping up. I don't know what to do. It also won't let me save it either.


I just downgraded from 13.04, which seems to have some stability problems right now, and moved back to 12.04.LTS.  I installed the GCC 4.8 compiler, which is not the default GCC compiler on 12.04. I need this compiler to get all the C++ 11 features it supports and were there by default with the compiler that comes with 13.04, using the ‘-std=c++11' switch.  So now I have 4.8 compiler installed, but I can't figure out how to make applications understand that the new compiler should be used for gcc/g++ instead of the default GCC compiler that comes with 12.04 (4.4.x?). How do I do this?  I saw somewhere that update-alternatives would do it. But I don't know to how use it to set the new GCC compiler to be the system default.


How to get Web Application url in SharePoint 2013 in Javascript?

I'm looking for a "beautiful" and the fastest way to get only the web application url (don't want to trim or substring or anything else).


Is there an alternative form/identity for $\prod_{k=1}^{m} \cos(2^kx)$?

I am working with a family of integrals that involve a product of cosines of the form $\prod_{k=1}^{m} \cos(2^kx)$.  Is there a formula or identity for simplifying $\prod_{k=1}^{m} \cos(2^kx)$ to a polynomial number of terms in $x$?  Or $\cos x$, $\sin x$?


Can Awakened Mind let you affect creatures that don’t share your language with spells that require them to understand you?

Spells like Mass Suggestion require that the target(s) must be able to hear and understand you.  The Great Old One’s Awakened Mind allows a Warlock to telepathically speak and be understood by anyone that understands at least one language (not necessarely those the Warlock knows).  My question is : within the Awakened Mind’s 30ft radius, can you affect creatures with Mass Suggestion even if their known languages don’t include yours ?


I recently updated to ubuntu 13.04, after installing some random program from the software-center I get the "Package operation failed"- "The installation or removal of a software package failed." and it looks like it has to do with python 3.3. Can someone explain what is this all about.(note that the random program was installed)    installArchives() failed: Selecting previously unselected package zenmap. (Reading database ...  (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20%  ----------  Unpacking zenmap (from .../zenmap_6.00-0.3_i386.deb) ... Processing triggers for man-db ... Processing triggers for desktop-file-utils ... Setting up python3.3-minimal (3.3.1-1ubuntu5) ... Traceback (most recent call last):   File "/usr/lib/python3.3/py_compile.py", line 8, in <module>     import imp   File "/usr/lib/python3.3/imp.py", line 28, in <module>     import tokenize   File "/usr/lib/python3.3/tokenize.py", line 28, in <module>     import re   File "/usr/lib/python3.3/re.py", line 122, in <module>     import sre_compile   File "/usr/lib/python3.3/sre_compile.py", line 14, in <module>     import sre_parse   File "/usr/lib/python3.3/sre_parse.py", line 17, in <module>     from sre_constants import *   File "/usr/lib/python3.3/sre_constants.py", line 18, in <module>     from _sre import MAXREPEAT ImportError: cannot import name MAXREPEAT dpkg: error processing python3.3-minimal (--configure):  subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already dpkg: dependency problems prevent configuration of python3-minimal:  python3-minimal depends on python3.3-minimal (>= 3.3.1-1~); however:   Package python3.3-minimal is not configured yet.  dpkg: error processing python3-minimal (--configure):  dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3.3:  python3.3 depends on python3.3-minimal (= 3.3.1-1ubuntu5); however:   Package python3.3-minimal is not configured yet.  dpkg: error processing python3.3 (--configure):  dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3:  python3 depends on python3.3 (>= 3.3.1-1~); however:   Package python3.3 is not configured yet.  python3 depends on python3-minimal (= 3.3.1-0ubuntu1); however:   Package python3-minimal is not configured yet. ---------- Errors were encountered while processing:  python3.3-minimal  python3-minimal  python3.3  python3  python3-apt  python3-dbus  language-selector-common  python3-gi  bluez  gnome-menus  kde-runtime  kdenlive  gnome-bluetooth  indicator-bluetooth  gnome-control-center  python3-xkit  ubuntu-drivers-common  python3-pkg-resources  python3-crypto  python3-oauthlib  friends-dispatcher  libfriends0  lsb-release  ubuntu-minimal  python3-gdbm:i386  python3-commandnotfound  command-not-found  python3-distupgrade  python3-update-manager  ubuntu-release-upgrader-core  ubuntu-standard  ufw  update-manager-core  python3-problem-report  python3-apport  apport  apport-gtk  apturl-common  unattended-upgrades  python3-software-properties  software-properties-common  python3-aptdaemon  python3-aptdaemon.gtk3widgets  software-properties-gtk  apturl Setting up zenmap (6.00-0.3) ... Setting up python3.3-minimal (3.3.1-1ubuntu5) ... Traceback (most recent call last):


Extending $\zeta(2)$ proof to $\zeta(4)$

There's a nice problem that's found in textbooks and on MSE to show that $$\zeta(2) = \frac{\pi^2}{6}$$ using just a tictch of multivariable calculus and a couple trig substitutions. The main idea is to find the below integral,  $$I = \int_0^1 \int_0^1 \frac{dx\, dy}{1-xy},$$ in two different ways. The first is to Taylor expand the integrand and exchange sum and integral signs to net $$ I = \sum_{n=0}^\infty \frac{1}{(n+1)^2}.$$  The second is to transform to rotated coordinates, integrate over one of them with a trig substitution, and then integrate over the other with another such substitution. I recommend checking out the explicit steps .   Though I'm aware of many derivations for the Basel problem (and the generating function, Poisson summation, contour integral derivations for the other $\zeta(2n)$), many from MSE, I enjoy the style of proof above.     My question is: Can we show that $$\zeta(4) = \frac{\pi^4}{90}$$ using the integral $$J = \int_0^1 \int_0^1 \int_0^1 \int_0^1 \frac{dw\, dx\, dy\, dz}{1-wxyz} = \sum_{n=0}^\infty \frac{1}{(n+1)^4}$$ through a handful of change of variables and direct integration?   I'm most interested in linear transformations followed by trig subs in the style of the above proof, but that's not a necessity.


Meta chatroom rep different from site chatroom rep

If you type a few lines one after the other in chat, you can see your site-wide reputation show up:  Except in any  room:  Why?  :-/


Eclipse with Salesforce - can't Refresh from Server

I just set up Eclipse with Salesforce, and when I try to Refresh from Server, it tells me  "unable to perform synchronize check with remote server Invalid username, password, security token; or user locked out Your project may be out of sync."  When I try to Deploy to Server, it gives me that, and then asks for my password, and then it works. But when I try to refresh from server, it just gives me that error and then doesn't ask for anything.  Is there a way to fix this?  Edit:  I asked a similar question before , that solution worked then, but it's not working anymore.   Edit: Is anyone out there? I reinstalled windows on my computer, reinstalled Force.com IDE, and I still cannot get this to work.


How to view Real time Internet usage using terminal?

Uplink and Downlink speeds, other statistics etc without third party software


Why do we use the phrase 'Across the pond'?

Why do we use the phrase  to refer to the opposite side of the Atlantic Ocean? Considering the size of the Atlantic Ocean is vast, is it suggesting the ocean is only a small hindrance? Considering that in the modern world it has become easier to communicate and travel?


What's the difference between scaling text via transform and changing font size?

Is there a difference between using Transform commands to scale text and altering the size of the font via Character panels?   I'm working in Photoshop CC


Synaptic interface is in Japanese. How do I change to English?

I am running Ubuntu 16.04 LTS. I added Japanese as a supported language but it is not the top one and no other apps appear in Japanese. How can I get Synaptic to display in English?  Output from locale command:  LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_CTYPE="en_US.UTF-8" LC_NUMERIC=en_US.UTF-8 LC_TIME=en_US.UTF-8 LC_COLLATE="en_US.UTF-8" LC_MONETARY=en_US.UTF-8 LC_MESSAGES="en_US.UTF-8" LC_PAPER=en_US.UTF-8 LC_NAME=en_US.UTF-8 LC_ADDRESS=en_US.UTF-8 LC_TELEPHONE=en_US.UTF-8 LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=en_US.UTF-8 LC_ALL=   Here is the output from /etc/default/locale.  Looks like we might have found the culprit! Thank you! How do I change these values?  #  File generated by update-locale LANG="ja_JP.UTF-8" LANGUAGE="ja:en_US:en" LC_NUMERIC="en_US.UTF-8" LC_TIME="en_US.UTF-8" LC_MONETARY="en_US.UTF-8" LC_PAPER="en_US.UTF-8" LC_IDENTIFICATION="en_US.UTF-8" LC_NAME="en_US.UTF-8" LC_ADDRESS="en_US.UTF-8" LC_TELEPHONE="en_US.UTF-8" LC_MEASUREMENT="en_US.UTF-8"


Zero weak gradient implies almost everywhere constant

Let $\Omega$ be open connected, and $u\in L^1_{loc}(\Omega)$ with weak gradient $\nabla u$. Can anybody provide a reference for $\nabla u=0$ almost everywhere $\implies u$ is constant almost everywhere?


In , I can view all my past web searches.  How can I download this data, instead of viewing them page by page on the website?


I've read that flash memories can "only" be reprogrammed 100000 to 1000000 times, until the memory storage "deteriorates"  Why exactly does this happen with flash and not other memory types, and what does "deteriorate" refer to, internally?  EDIT: Since it's not only flash that this happens, I'd like to generalize a bit and inquire about the memories that have this problem. Also, does the wearing out between these memory types occur due to the same phenomenon?


Changing the central point for transform

I'm trying to rotate all sprites in the view port around a central character. I have made some progress, using the following I can get my ship to rotate around the coordinates 0,0, with the radius being the initial placement of the ship.  How do I move the point that my ship will revolve around? If I try adding NewPoint to any meaningful screen position the ship buggers off!      Dim NewPoint As New Vector2     NewPoint = Vector2.Transform(Ship.Position, Matrix.CreateRotationZ(Ship.ShipAngle))     Ship.Position = NewPoint     Ship.RotationValue = Ship.ShipAngle   Thanks for all your help with this folks, I do appreciate it.


OS Choice for and old PC, AMD Anthalon XP 2000+ 32bit with only 256MB of RAM

Looking at the site with older versions of Ubuntu it seems like 64bit on amd chips is the only option. I can upgrade the ram but I am pretty sure I am stuck with a 32bit processor. This PC had Windows XP installed but cannot reach the update site. Just want to try installing ubuntu or some other linux to see if there is some hardware malfunction.


"not a valid identifier" when I do "export $PATH"

When I run export $PATH in bash, I get the error not a valid identifier. Why?


Why is a physical anti-aliasing filter still needed on modern DSLRs?

I understand the purpose of the anti-aliasing (AA) filter is to prevent moire. When digital cameras first emerged an AA filter was necessary to creat enough blur to prevent moire patterns. At that time the power of in camera processors was very limited. But why is it still necessary to place an AA filter over the sensor in modern DSLR cameras? Couldn't this be accomplished just as easily by the algorithms applied when the output from the sensor is being demosaiced? It would seem that the current processing power available in-camera would allow this now much more than even a few years ago. Canon's current Digic 5+ processor has over 100 times the processing power of the Digic III processor, which dwarfs the power of the earliest digital cameras. Especially when shooting RAW files, couldn't the AA blurring be done in the post processing stage? Is this the basic premise of the Nikon D800E, even though it uses a second filter to counteract the first?


Bash history limited to 1000 even with HISTSIZE=9999999

On my old notebook (Debian sid) I had this in my ~/.bashrc and it used to work (e.g. history was more or less unlimited and it was being saved on each command): export PROMPT_COMMAND='printf "\033]0;%s@%s:%s\007" "lucio" "t470" "/home/lucio/virtualbit/progetti/workspace/vscode/teom/websi"' export PS1='\[\e[1;31m\]\u\[\e[1;33m\]@\[\e[1;36m\]\h \[\e[1;33m\]\w \[\e[1;35m\]$ \[\e[0m\]' export HISTFILESIZE=9999999 export HISTSIZE=9999999 export HISTTIMEFORMAT="%d/%m/%y %T " shopt -s histappend export PROMPT_COMMAND="history -a;history -a;printf "\033]0;%s@%s:%s\007" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOME/~}""  I copied over the same ~/.bashrc on my new notebook (Debian sid like the old one) and verified it's being applied: $ echo $HISTSIZE 9999999  but my history is being cut at 1000 entries. I also tried with HISTSIZE=-1 in my ~/.bashrc (based on  information) with same results: my history is being cut at 1000 lines, but I don't want unlimited history anyway, I want a very high limit, such as 9999999. What am I doing wrong? Why it does not work anymore while it used to work on my old notebook? Maybe there was a package other than bash itself on my old notebook that made it work? EDIT: this question has been marked as duplicate of ,but please note it's not a dup. I already know how to have unlimited history in bash, except that solution DOESN'T work in my case and I don't want unlimited history anyway.


Is it possible that the LIGO results are anomalies?

Since it was reported recently that the supermassive black holes at the centres of galaxies may in fact be as many as 20,000 smaller black holes I wondered if, if these black holes collide with one another, why they wouldn't be producing gravitational waves all the time. But then I also wondered that, if whilst accepting material, supermassive black holes must drastically increase the density of that material before it collides with the SMBH why this wouldn't also cause gravitational waves. Since GW's can (presumably) be caused by anything, since colliding neutron stars also emit these waves, why wouldn't any other source emit them also?  Also, why could they not be caused by seismic activity? Even if there's a minute probability of such events occurring surely it's possible that, given all the potential sources of a matching signal, that it would happen eventually? What are people's thoughts on this matter?


I am using a  to sort an ArrayList of SomeClass items. It works just fine, no problems. What I'm curious about is the syntax. Given:   public static class PrioritizedPendingListComparator implements Comparator<SomeClass> {          @Override         public int compare(SomeClass o1, SomeClass o2) {         ...         }   And then, some time later,  private ArrayList<SomeClass> pendingList = new ArrayList<>();   ... // fill it up with entries  Collections.sort(pendingList, new SomeClass.PrioritizedPendingListComparator());   I use new SomeClass.PrioritizedPendingListComparator() as the second argument to Collections.sort(). My comparator, PrioritizedPendingListComparator, is static so I don't expect to have to use new.   Why can I not just use SomeClass.PrioritizedPendingListComparator e.g. why do I need the new?  How would I know this from reading the ?


What does it mean when a computer is 'greyed out' in Apple Remote Desktop?

I've got several computers that I manage using Apple Remote Desktop. Sometimes I have issues connecting with some of them. I've noticed this most often happens when their computer icon is light purple (greyed out) as opposed to dark purple.   Any ideas what this light purple means?


if somehow we could survive in black hole would we survive the end of universe as time inside black hole would stop and would be infinite?

as time goes on slowing with increase in mass. how can black hole ever form in finite time. is infinite time has different meaning for different observer. if so would the event of universe dying be different for different observer?


How to move home folder to another drive (keeping the files in the drive)

Just erased Windows from my C drive and replaced with Ubuntu.  All my documents and files are in a separate drive, D. Ubuntu installation placed my new home folder in C, but I want to move it to D and keep all the files already in it. How do I do this?


Limits for multivariate functions $\displaystyle \lim_{(x,y) \to (0,0)}\frac{xy^2}{x^2+y^4}$

Can anyone help me solve this question  Does the limit exists?  $$\lim_{(x,y) \to (0,0)}\frac{xy^2}{x^2+y^4}$$  I tried using polar coordinates to solve this problem but I got $\frac{0}{0}$ which is an undefined number so I conclude that the limit does not exists. Also I tried to sub $y=mx$ to to test for disco unity but I keep getting $0$. I even tried $y=mx^2$ but I still get $0$. Can I use polar coords to test whether the limit exists or not?


A word that says a person is both female and your friend

It's often confusing for me to talk about my friends, especially my female friends. This is because in Dutch there are words for both male ("vriend") and female ("vriendin") friends. In English however, there's as far as I know only the word friend, which can mean both a male or a female friend.  For this reason I was wondering if there is a word to say a person is both female and a friend.


I am trying to extend the C: with the unallocated space on the on the left.  I tried using a tool like EaseUS disk tool but it wasn't able to move C: to the left of the unallocated space.  Does anyone know how to get around this?


Why isn't $1 \to \mathbb{Z}_2 \to \mathbb{Z}_4 \to \mathbb{Z}_2 \to 1$ a split extension?

Let $\mathbb{Z}_n$ be the cyclic group of $n$ elements and $1$ the trivial group. I'm looking at the following extension:  $$1 \to \mathbb{Z}_2 \to \mathbb{Z}_4 \to \mathbb{Z}_2 \to 1$$  Because every action of $\mathbb{Z}_2$ on itself is trivial, the only split extension of $\mathbb{Z}_2$ by $\mathbb{Z}_2$ is the direct product $\mathbb{Z}_2 \times \mathbb{Z}_2 \cong V$ (the Klein group). But given that:  $$\mathbb{Z}_2 \cong \mathbb{Z}_4/\mathbb{Z}_2 = \{ (1 \bmod \mathbb{Z}_2), (x \bmod \mathbb{Z}_2)\} \text{ with } (x \bmod \mathbb{Z}_2)^2 = 1$$  A homomorphism $\psi: \mathbb{Z}_4/\mathbb{Z}_2 \to \mathbb{Z}_4$ that sends $(x \bmod \mathbb{Z}_2) \mapsto y$ (consider $y$ the generator of $\mathbb{Z}_4$) isn't a splitting of the above sequence? Because going through $\psi$ and then back through the projection sure is the identity mapping.  I'm sure I'm missing something deeper, because I also can't answer the general case: given that $G$ is a extension of $N$ (normal) by $K$, and that $K \cong G/N$, doesn't the injection $K \to G$ which maps $(x \bmod N) \mapsto x$ always splits the sequence? I'm sure not, but why?


Recommendations for Non-Proportional Hazards

This is an issue that has plagued me for a long time and I have found no good answers in textbooks, Google, or Stack Exchange.   I have data set of >100,000 patients for which four treatments are being compared. The research question is whether survival is different between these treatments after adjusting for a bunch of clinical/demographic variables. The unadjusted KM curve is below.    Non-proportional hazards were indicated by every method I used (e.g., unadjusted log-log survival curves as well as interactions with time and the correlation of Schoenfield residuals and ranked survival time, which were based on adjusted Cox PH models). The log-log survival curve is below. As you can see, the form of non-proportionality is a mess. Although none of the two-group comparisons would be too difficult to handle in isolation, the fact that I have six comparisons is really puzzling me. My guess is that I won't be able to handle everything in one model.     I'm looking for recommendations on what to do with these data. Modeling these effects using an extended Cox model is likely impossible given the number of comparisons and differing forms of non-proportionality. Given that they are interested in treatment differences, an overall stratified model isn't an option because it won't allow me to estimate these differences.   So, feel free to rip me apart, but I was thinking about initially estimating a stratified model to get the effects of the other covariates (testing the no-interaction assumption, of course), and then re-estimating separate multivariable Cox models for each two-group comparison (so, 6 total models). This way, I can address the form of non-proportionality for each two-group comparison and get a less wrong estimated HRs. I understand that the standard errors would be biased, but given the sample size, everything will likely be "statistically" significant.


Scenarios for a 25 yo finishing a PhD staying in Academia, but hope to invest her $100 K USD

Suppose 1: I am a 25 year old just about to finishing my PhD in pure mathematics, and have saved about $100 K USD so far in my life. I have saved all $100 K USD in an American Bank (actually Bank of America).  Actually all $100 K USD can be used for investment, because I have additional saving (like extra $50K USD for backup).  Suppose 2: You are senior and more intelligent in finance and investment issue. You wanted to give me some serious advices.  What would you recommend me to do with this $100 K USD in the upcoming years? Say the next 10 or 20 years, and I am staying in USA. i.e., Best secnario for a 25 yo finshing a PhD, focus a career in Academia but invest her $100 K USD at hand  Suppose 3: I would still focus most of my time doing research as I am applying my postdoc in pure mathematics. But I like to make the best enhancement for this $100 K USD. Are there some good ways to invest this money, while put my minimal attention on this investment, however I can still gain the most of profits/increase-ment out of it? (Much better than putting in a Bank.) Note: I am currently living in US in the east coast near NYC, but I am not a US citizen (yet). I would be having about a $70K USD salary per year for upcoming years. Thank you for the precious advices! Edit: My question is different from , because I am working in Academia, so I wish to focus on my academic research/teaching, and have least distractions while stably investing. Also my starting background is different from the other post.


How to create a gradient color expression in data defined properties

This question is stemming from my other question on data defined attributes:    Anyway, can anyone help me create an expression within the data defined properties -> fill color -> expression string builder. See following screenshot     My field is an integer value and I'd prefer light blue to dark blue gradient fill. Can anyone help with the input into the expression builder that would result in gradient filled centroid markers?


How do I get an operating system onto a new hard drive?

I will be installing a new 500GB hard drive in my macbook.  It is a late 2008, aluminum, 13-inch screen.  Once I install it, how do I get an operating system that's 10.7 or newer (downloaded from the App Store) on to the bare/unformatted drive?


Is there any relationship between memory access time and clock speed of processor?

I was just studying my computer organization topic and came across words and the time taken to access words, memory access time. So this has something to do with the processor. Then I thought of the clock speed, how many instructions it executes or reads. And I just want to know whether there is any relationship between the two or I just need to understand both deeper.


I'm using WPS on my Windows network and would like to use it on my Ubuntu 17.10 computer.  I'm not very conversant in Linux.  Anybody have a suggestion?


I have been experiencing an issue that once I have a material created and looking the way I want it, I cannot seem to export it correctly with the textures mixed.  I don't know the correct words to use, but in blender I have the material created using the nodes editor, and I have placed two textures inside of there (one for the rock texture and one for moss, my object is a rock). When I export this model and import to Unity (the game engine I am using), I find a materials folder but the material inside of it does not have the textures assigned, it's just a plain white material?  How can I export my material from blender in a way that it will allow me to import it WITH TEXTURES into Unity?


Showing an isomorphism between exterior products of a free module

The following is a question that comes from a counterexample to a problem about exterior algebras of modules and the notes mentions somehow this all relates to the fact that symplectic geometry is done over even dimension.    Let $F$ be a free $R$-module of rank $ n\geq 3$ where $R$ is a commutative ring with identity.  Let $T(F) = \oplus_{k=0}^{\infty} T^{k}(F)$ where $T^k(F) = F \otimes F \otimes \ldots \otimes F$ is tensor product of $k$ modules.  Let $\wedge F $ denote the exterior algebra of the $R$-module $F$, that is the quotient of the tensor algebra $T(F)$ by the ideal $A(F)$ generated by all $x \otimes x$ for $x \in F$.    Suppose $1 \leq k \leq n-1$.       How do we show $ \wedge ^k F \cong \wedge^{n-k} F$?


$\mathbb R$ is an extension of $\mathbb Q$.  Why the elements of $\mathbb Q(2^{1/3})$ have the form $a+b\sqrt[3]2$?  More specifically why $\mathbb Q(2^{1/3})=\{a+b\sqrt[3]2+c\sqrt[3]4:a,b,c \in\mathbb Q\}$?


How to earn reputation on an established stack?

I just want to thumbs up a good answer, but I can't. I can't earn reputation because all conceivable simple questions have been asked and answered!  Is there a way to usefully earn reputation on a mature site for a non expert? Or am I forever to be locked out of giving thumbs up?


What really is color and how do we perceive it?

How do our brains actually transform the information that the cones in our eyes  receive into the different colors that we can see and imagine?


What was going on with Oliver Queen and Flash at the graveyard?

At the start of Season 4 of Arrow, we see a flash-forward teaser scene: Oliver Queen at a grave.  The Flash shows up and apologizes for not being able to help out, and Oliver says he understands, because Flash was busy with his own villain.  Flash nods and runs off at his customary super-speed.  However, by the time the story catches up to this point,       The Flash has been depowered.     This would seem to indicate that this Arrow episode is taking place further ahead of the storyline for The Flash.  In Rupture, the The Flash episode that aired immediately after this Arrow episode, though, two things happen to cast doubt on this interpretation:  At the beginning of Rupture, we see that Cisco has       rigged some STAR Labs satellite technology to project a holographic image of The Flash, to help make people think he's still around and provide what assistance he can to the police this way.  However, I'm disinclined to believe that it was a hologram talking with Oliver, because he was was talking with Oliver, in a fully interactive, normal conversation.   Second, at the end of Rupture,       something goes wrong and Barry appears to die horribly by disintegration.  He has not gotten his powers back at this point.   In light of this, when does the graveyard scene take place, and what's Barry's status?  Do we have any official answer so far?


javascript not working after ajax + changing html

When the page is first loaded, the javascript works well. But after I make a ajax call(I think it should be ajax?), the javascript is not working. I see some post in stackoverflow having similar title but i think it is not similar to my problem actually.  Details of my work :  To make a new appointment of students. I need to select name(in dropdown) of the student, subject he/she wanted(fixed text and manual input in radio/ select and manual input in radio), corresponding tutor and fee. So after the user has set the student name, it should be change to the first choice subject and corresponding tutor and fee. After picking student, the user need to choose the subject (maybe from dropdown or radio).   pick name of student in first dropdown select onchange -> ajax call -> parse response -> set entire
 code of block of choosing subject (since it is a mixed of many things, i don't think it is good to set those input and select separately) pick the subject   my javascript works for first loaded page, but not after changing the name of student. (i am now trying to alert only)  code :  html
 <?php      if (empty($row['desc02'])){ // only got one subject : dropbown list         // mysql query here         echo "<input id=\"desc01\" type=\"radio\" name=\"description\" class=\"addtuteeradio\" checked/>";             echo "<select id=\"description\" name=\"description\" class=\"apptbigselect\" required>";             while ($row = mysql_fetch_assoc($result)){ // looping all matching                  echo "<option value=\"".$row['description']."\"";                 if (strcmp($row['description'], $pref_description) == 0) echo " selected";                 echo ">".$row['description']."</option>";             }             echo "</select>";         echo "";         echo "<input id=\"desc04\" type=\"radio\" value=\"manual\" name=\"description\" class=\"addtuteeradio\"/><input id=\"desc04text\" type=\"text\" name=\"desc04\" placeholder=\"or manual input\" class=\"apptbiginput\" ></input>";     }     else { // more than one subject : radio button         // mysql query here         echo "<input id=\"desc01\" type=\"radio\" value=\"$desc01name\" name=\"description\" class=\"addtuteeradio\" checked/>$desc01name";         echo "<input id=\"desc02\" type=\"radio\" value=\"$desc02name\" name=\"description\" class=\"addtuteeradio\"/>$desc02name";         echo "<input id=\"desc04\" type=\"radio\" value=\"manual\" name=\"description\" class=\"addtuteeradio\"/><input id=\"desc04text\" type=\"text\" name=\"desc04\" placeholder=\"or manual input\" class=\"apptbiginput\" ></input>";     } ?>
   javascript (or ajax?)     I think I describe it a bit messy, hope you can understand..


I was never sent an e-mail verification e-mail for Pokemon Go. Is that going to be a problem?

This is my second time creating a Pokemon Go account through Google. My first account stopped working after about 2 days. I tried to figure out why that happened and a friend asked if I had verified my e-mail account. But I never received an e-mail from Pokemon Go requesting verification. And, on the second time around, I have again not received that e-mail. Will that be an issue?


As per official website Ubuntu 16.04 system requirements are as below,  2 GHz dual core processor or better, 2 GB system memory, 25 GB of free hard drive space,  But my system info is as below,  Processor:- Intel(R) Celeron (R) CPUB815@1.60 GHz, RAM:- 2GB, System type:- 32 bit,  Please help to check whether my system fulfills all requirement?


How can I connect the top loop to the down loop with faces

Hey I want to connect the bottom loop with the top loop so that it forms a solid.  I have tried selecting multiple vertices and pressing F but that just creates a large face which I do not want. I have tried using grid fill bu that doesn't work either. The solution that seems to work is by selecting four vertices and pressing F and then selecting the next 4 and pressing F and on and on. That just takes too long.


Is it possible that there are more than 6 quark flavors/more than 3 generations?

I thought that things like the top quark don't exist in nature because they're super unstable and we can only observe them after high-energy collisions (e.g. LHC)  Is it possible to make even more massive quarks?  Or is there a reason the limit is six?


I want to make gallery always displayed after post, regardless of where the shortcode was inserted.  If I write:
 <?php the_content( "Next..." ); ?>  <?php // Retrieve all galleries of this post $galleries = get_post_galleries_images( $post );  // Loop through all galleries found foreach ( $galleries as $gallery ) {     // Loop through each image in each gallery     foreach ( $gallery as $image ) {         echo '';     } } ?>    The gallery will still be posted in the message and, as result, will be duplicated twice.  The possible solution is that I see - before the post is processed, find the shortcode in the text, remove it from there and add it to the end of the text.  Tell me please how to implement this method, or at least tell me what filter I should use to change the content before the shortcodes in it will be processed.


With a large number of ignored tags, editing them becomes a hassle

Editing ignored tags can be cumbersome when you have a lot of them already.   If you would be so kind to take a look at the following. My front page looks like this:    When I proceed to click "edit" on the right of Ignored Tags...    ... I have to scroll all the way to the bottom of the page to find a small add box using my trusty scrollbar or scroll wheel. Both of which take ages:    To add to my agony, I normally middleclick to make the autoscroll option appear. Then I can just move my mouse down and it will go to the place fast. But if I middle click to the right of the list of ignored tags, the add box dissappears. So I have to use the scroll wheel or scroll bar instead, which takes forever.   Could something be done to address this issue?


How to prevent a method from being overridden in derived class?

How can I enforce that a base class method is not being overridden by a derived class?


Let $X_1, X_2, \dots$ be i.i.d. exponentially distributed RVs. For $n = 1,2,\dots$ consider: $Y_n := \max(X_1, X_2, \dots, X_n)$ $U_n := \sum_{i=1}^{n}\frac{X_i}{i}$ Show that $Y_n$ and $U_n$ have the same distribution   What I've tried: $P(Y_n<y)= P(X_i<y)^n = (1- e^{\lambda y})^n => P(Y_n=y) = n(1- e^{\lambda y})^{n-1}$ But I get stuck with $U_n$. I tried an MGF, $U_n$ evaluates nicely but then $Y_n$ gets messy. Any thoughts?


How to share a JavaScript project without revealing the actual code?

I created a JavaScript program and want to share it with my friends as an application. But ,I don't want to reveal my coding and want to share it as an application.


How does escape velocity relate to energy and speed?

I have several confusions regarding . I am sure I am missing something(s) obvious or maybe I am taught wrong.     Lets say we throw an object of any mass at exactly escape velocity of earth calculated from $v^2=\frac{2GM}{r}$ which is almost $11 \text{km s}^{-1} $ but I am talking about exact escape speed.   That ball initially has $KE=\frac{1}{2}mv^2$ and $PE=mgh$. Wikipedia says and I quote      In physics, escape velocity is the speed at which the kinetic energy plus the gravitational potential energy of an object is zero.     How is that possible? As $F=\frac{GmM}{r^2}$ no matter how much the particle travels away from earth's surface it will always be accelerated towards earth. With increasing $r$ the $F$ will decrease but it will never reach $0$. That means that there will be no point where the particle will stop and will continue to move with slower and slower speed will never reaches zero. Am I right? A request: Please explain exactly what happens to particle's $KE$ and $PE$ at different points such as at $r=0$ and at $r=\infty$.


Value of $ \cos 52^{\circ} + \cos 68^{\circ} + \cos 172^{\circ} $?

I am a little weak in trigonometry. I have two questions:   Find the value of $\cos 52^{\circ} + \cos 68^{\circ} + \cos 172^{\circ} $ Find the value of $\sin 28^{\circ}+ \cos 17^{\circ} + \cos 28^{\circ} + \sin 17^{\circ} $   I am asking these questions because: 1. I am weak and unable to solve these. 2. I want to know the difference in these questions.


How do I know the impact factor of a certain journal is true?

I am new in publishing, I have never published a paper, and nowaday there are too many online journals. That made me suspicious about their reputation, and it is not easy for me as a beginner in publishing to decide whether they are faithful about their impact factor or not.  Let me be precise, I wonder if anybody know about  journal? it says it has impact factor 2.31, can anyone please confirm that?   If you believe this is not a correct place to ask this question can you please tell me where should I ask?


Prove that $f\colon \Bbb R^2\to \Bbb R$ is continuous

Let $f\colon \mathbb{R}^2 \to \mathbb{R}$ be function, such that for every fixed $x_0$  $f(x_0,y): \mathbb{R} \to \mathbb{R}$ is monotone and continuous function   and for every fixed $y_0$  $f(x,y_0): \mathbb{R} \to \mathbb{R}$ is continuous function.  Prove that $f$ is continuous.  I am trying to check the continuity at $(x',y')$, So let $\epsilon > 0$ and now $|f(x,y)-f(x',y')| \le |f(x,y)-f(x,y')|+|f(x,y')-f(x',y')|$  by triangle inequality (I'm trying to move colloterally to axises). Now I think I should use the continuity of $f(x_0,y)$ and $f(x_0,y)$ in apriopriate way, but I don't se how.


Is there a formula which gives the solutions of a general fifth grade equation by using trascendental functions?

Thanks to Galois we know that the solutions of a general fifth order equations cannot be expressed by means of radicals.   Can we exclude that a formula exists if we are allowed to also use (any composition of) trascendental functions like: $\exp$, $\log$, $\tan$, $\arctan$?


How normal is it to have published as an undergraduate?

I’m currently in the first semester of MSc of psychology in a university in Germany and we got a lecturer from a university abroad who wanted to know what we had published. To his surprise, none of us had any publications. For us at least, not having any publications when entering the graduate program is normal.  I know of a couple of peers who were able to publish their bachelor’s thesis and one person who had several publications even before he started his masters, but at our university those are the exception, rather than the rule.  How is the situation in other countries and disciplines? Do undergraduates generally have any publications?


What's the thing with $\sqrt{-1} = i$? Do they really teach this in the US? It makes very little sense, because $-i$ is also a square root of $-1$, and the choice of which root to label as $i$ is arbitrary. So saying $\sqrt{-1} = i$ is plainly false!  So why do people say $\sqrt{-1} = i$? Is this how it's taught in the US?


Can hybrid Vulcan/Humans procreate, or are they like mules?

Like full blooded Vulcans, the hybrid Spock is driven by the urges brought on by pon farr. Can hybrid Vulcan/Humans reproduce, or are they like horse/donkey hybrids on Earth, physically willing, but biologicaly unable to create offspring?


I was told when first learning QFT that linear terms in the Lagrangian are harmless and we can essentially just ignore them. However, I've recently seen in the linear sigma model, \begin{equation}  {\cal L} = \frac{1}{2} \partial _\mu \phi _i \partial ^\mu \phi _i - \frac{m ^2 }{2} \phi _i \phi _i  - \frac{ \lambda }{ 4} ( \phi _i \phi _i ) ^2  \end{equation}  with $m ^2 =-\mu^2 > 0$, adding a linear term in one of the fields $\phi_N$, does change the final results as you no longer have Goldstone bosons (since the $O(N)$ symmetry is broken to begin with).   Are there any other effects of linear terms that we should keep in mind or is this the only exception of the "forget about linear terms" rule?


Is there an Ubuntu distribution which is customized to run on the android kernel?

Every android device has a more or less customized kernel. Most of these are open source?!(I am not sure about the "most".) Is there a Linux or even better ubuntu distro which comes with has support for lots of android devices out of the box? Thanks? And which is nearly as easily installable as "Ubuntu  for Desktop"?


How do I do a full installation of Linux onto a USB flash drive

I can make live boot usb drives, but I want to know if/how it is possible to install a full version of Linux onto a 32 GB flash drive that i have. I have been trying to no avail so was wondering if I am even doing it correctly.


I've noticed that kernel.shmmax value is set to oddly huge number on my RHEL 7 system.   # sysctl kernel.shmmax kernel.shmmax = 18446744073692774399    Is it OK to have such a huge number set? How can it affect the system? What exactly that parameter means?   Some info about the system:   # cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.2 (Maipo)  # cat /proc/meminfo MemTotal:        9037028 kB MemFree:          175220 kB MemAvailable:    2544492 kB Buffers:               0 kB Cached:          2716836 kB SwapCached:        14908 kB Active:          5749708 kB Inactive:        2371364 kB Active(anon):    4490064 kB Inactive(anon):  1120848 kB Active(file):    1259644 kB Inactive(file):  1250516 kB Unevictable:       10800 kB Mlocked:           10796 kB SwapTotal:       5242876 kB SwapFree:        5143688 kB Dirty:              9704 kB Writeback:             0 kB AnonPages:       5400268 kB Mapped:           318000 kB Shmem:            202700 kB Slab:             379036 kB SReclaimable:     169128 kB SUnreclaim:       209908 kB KernelStack:       34080 kB PageTables:        46252 kB NFS_Unstable:          0 kB Bounce:                0 kB WritebackTmp:          0 kB CommitLimit:     9761388 kB Committed_AS:    7599336 kB VmallocTotal:   34359738367 kB VmallocUsed:      181868 kB VmallocChunk:   34359341052 kB HardwareCorrupted:     0 kB AnonHugePages:   1861632 kB HugePages_Total:       0 HugePages_Free:        0 HugePages_Rsvd:        0 HugePages_Surp:        0 Hugepagesize:       2048 kB DirectMap4k:       92096 kB DirectMap2M:     9345024 kB   # uname -a Linux hostname 3.10.0-693.21.1.el7.AV1.x86_64 #1 SMP Thursday April 5, 2018 09:26:08 MDT x86_64 x86_64 x86_64 GNU/Linux   Well, kernel.shmall parameter has the same value.  $ sysctl -a | grep shm kernel.shmall = 18446744073692774399 kernel.shmmax = 18446744073692774399 kernel.shmmni = 4096   Thanks in advance!


Comparison: umbcposter vs baposter vs tikzposter

For a scientific conference I would like to make a poster. I have noticed that there are three more or less popular classes for that: umbcposter, baposter, tikzposter.  What are the advantages and disadvantages of the classes compared with each other?  Edit: I am not talking about just a list of LaTeX packages with which one can make posters. I am looking for advantages and disadvantages (as already mentioned). This is not provided by


The German languages adds the uppercase form of the versal ß to it's alphabet now and I was wondering, how this specific letter is supported in LaTeX as well as what types of fonts provided in LaTeX can be used to print it.  Research only provides information about how to code the lowercase ß and not much else.  Is it actually supported yet or does it need to be implemented?


I saw nikon Nikon AF 70-300mm f/4.0-5.6G which works on both DX and FX sensor camera. I have Nikon D3300 which have DX sensor.  As lens works on FX sensor if we use this lense on DX camera what would be the focal length?  i'm assuming it would be 1.5*300 = 450 mm or not? (1.5 Nikon DX crop factor)  what will be the actual focal length with 2X teleconverter?( 900mm? )


Is it safe to use a "Universal Laptop Adapter"?

I have seen a "Universal Laptop Adapter" sold in a computer shop before. I am thinking of getting one for a laptop. Is it safe to use? What differences are there between one of these and a typical laptop adapter?


Group, which doesn't have $\mathrm{Aut}(G)$.

Does there some groups which doesn't contain $(\mathrm{Aut}(G),*)$ (only $\mathrm{id}$), where $*$ is composition. I thought that $\mathbb{R}$ could be such group, but I can build bijection between $\mathbb{R}$ and $\mathbb{R}$ ($[i,i+1) \mapsto (-i-1,-i]$).  Have no idea how to build such group. Any hints? It would be great if you're have some link about it.


How to flash a RUU on a rooted HTC One X (Evita) using TWRP

Is it possible to flash a ruu on a rooted HTC One X (Evita).  Actually, I have a AT&T HTC One X (evita) and I want to flash with an international rom of HTC One XL. It will be good if any one know a link of rooted stock rom of HTC One XL international version.  I am no more using AT&T and dont want any AT&T apps.


Downloading high resolution Google Earth Images

How can I download historical google earth images for years like 2015 and 2020? I cannot find date filter in universal map downloader.


Combinatorics, question I need help with

How many 6 digit numbers fron the digits (2,3,9) divide by 3. and another question is the same but divides by 6.


Am I allowed to use a figure drawn by co-author in another paper?

I published paper 1 with a co-author A, who drew a very good illustrative figure in the introduction.  I want to submit paper 2 which addresses the same problem (but uses a completely different approach), so the introduction of the problem is pretty much the same. Do I need to ask A for permission to include the figure in paper 2?


Is there an English word for a wifeless man who has a concubine?

Not a husband - as he does not have a wife before the concubine.  Is there a single word for this or is there a lexical gap in the English language?  Sample sentence:      The concubines fell at the feet of [their men]   "Their men" obviously referring to the specific word I'm looking for, but may not exist in the English language.


How to determine the amount of experience needed for leveling up

Related questions under this topic might include:   How should I base how much experience points it takes to get to the next level? What factors are involved in this? How do I keep the player not entertained long enough till he levels up? How can I vary the way the player gets experience points?


Method of characteristics for Burgers' equation with rectangular data

Using the method of characteristics, find a solution to Burgers' equation    \begin{cases} u_t+\left(\frac{u^2}{2} \right)_x =0 & \text{in }\mathbb{R}\times(0,\infty) \\ \qquad \qquad \, \, u=g & \text{on } \mathbb{R} \times\{t=0\} \end{cases}   with the initial conditions    $$g(x)=\begin{cases} 0 & \text{if }x < 0 \\ 1 & \text{if }0 \le x \le 1 \\ 0 & \text{if }x > 1 \end{cases}$$   First, I realized that the equation $u_t+\left(\frac{u^2}{2} \right)_x =0$ is equivalent to this form: $$u_t+uu_x =0$$  Then should I generally follow the method of solution as outlined in the answer of ?  Note that this is not a duplicate question of that page. Rather I want to know if that page can be used for my problem, even though my ICs are different.  By the way, the solution printed in my book (PDE Evans, 2nd edition, page 142) is      $$u(x,t) =  \begin{cases} 0 & \text{if } x < 0 \\  \frac xt & \text{if } 0 < x < t  \\ 1 & \text{if } t < x < 1 + \frac t2  \\ 0 & \text{if } x > 1 + \frac t2 \tag{$0 \le t \le 2$}  \end{cases}$$


The internal storage on my phone is almost full. The storage screen tells me    2.77GB / 2.91 GB taken Apps 0.89GB Other 1.89 GB Available 138MB   What is this "other" and how can I clean it up? I already followed the steps of "make more space", it barely makes a difference.   Phone Storage then tells me 43.00MB / 1.09GB is taken.  And on the SD card I have 1.86GB / 14.72GB taken.  I have plenty of storage in various places yet when I try to install apps I'm unable to do so cause of "insufficient storage". How can I fix this?


Whenever I try to view .js in IE8 by just visiting the .js url, it prompts for a download. how can i view the actual code without downloading it?


how to get timezone-aware midnight datetime in python?

I'm working in django, but standard python solution is ok too.    I'm converting a code which uses a naive-datetime to use aware-datetime.  Below is the original code:  today = datetime.today() MyClass.objects.filter(datetimefield__range=(today, today+datetime.timedelta(1)) )   How do I convert it to use timezone-aware time?    If the time is jun/3rd/7:20pm locally, I'd like to get datetime range of [jun/3rd/00:00am, jun/4th/00:00am]  (midnight to midnight which will include now)


Show that for all real numbers $a$ and $b$, $\,\, ab \le (1/2)(a^2+b^2)$

so as in the title, I have the following theorem to prove.   Theorem  Show that for all $a$, $b\in \mathbb R$, that the following inequality holds, $\begin{equation} ab \leq \frac{1}{2}(a^2 + b^2) \end{equation}$.  My attempt  So if $a=b=0$, then the inequality is trivially $0 \leq 0$ and we are ok.  If $a > 0$ and $b < 0$, then the product on the right is less than zero, while the one on the right is greater than $0$, so the inequality holds.  The problem that I am having is that if the numbers are the same sign, we have that both products will be positive and now we have to the show the inequality is true in this case.   I tried making the following re-arrangement as a starting point $\begin{equation} \\ 2ab \leq (a^2 + b^2) \end{equation}$  But I am not really sure where to go from here. I've been staring at it for a while and I just can't seem to get anything out of it. I noticed that it looks rather similar to the law of cosines for theta equal to 90 degrees and $c = 0$, though that would be wierd indeed. Anyway that hasn't been talked about in the book yet so I don't think it matters.   We have been introduced to the binomial theorem, difference of powers and geometric sum theorems, but I couldn't find any enlightenment from these.  I don't really want an answer if you can help it, but a hint in the right direction would be appreciated if you could offer one. Thanks.


Possible Duplicate:          I have tried using \text{\~{}} to draw a tilde in math mode. However, this only produces a superscript tilde.  I have looked around at many pages such as this one:   and surprisingly, I can't find where to draw a tilde in math mode (not under or above a character - just a single tilde character). If I just use ~, then nothing appears.


Use logical operators, and another array to filter a new array

I have an array of foods, with various objects representing information about each food var Food = {     ["Apple","Green","Fruit"],     ["Basil","Green","Herb"],     ["Tomato","Red","Fruit"],     ["Carrot","Orange","Vegetable"],     ["Zucchini","Green","Vegetable"] }  I am able to filter this array into a new array using the filter function. var newArray = Food.filter(function (el) {   return el[2] == "Fruit" ||           el[2] == "Vegetable" || });  As expected, this produces a new array with the items which are fruits and vegetables. I would however like to use a separate array with the or logical operator as the criteria for the filtration. For example I would have an array like this: var filters = ["Fruit","Vegetable"]  This would then be referenced in the filter function to produce the same result. I have tried a few things such as building a string as passing it through the function, but I am having problems with not using the || on the final object of the array. How may I achieve this sucessfully?


What is the 'deleted recent questions' page in the user profile?

On the bottom of questions tab of the user profile, there is a link that states "Deleted recent questions".    This links to http://site.stackexchange.com/users/recently-deleted-questions/xxxxx.  The title of the page is 'User Flair', which seems odd in itself.  What is this page meant to show?  Whenever I have looked at it it is blank for me, to test I deleted  on Android.SE however six hours later the recently deleted questions page was still blank.    Is this feature not working, am I incorrectly interpreting it (for example is it only moderator/community deleted questions) or was my experiment a failure due to long term caching? Having now re-read the link I see that whilst the title is "Recently deleted questions", the link is to "deleted recent questions" - does the question have to have been recently asked?


What is the limit of zero times x, as x approaches infinity?

I am having difficulty determining is the solution for the following problem:  $$\displaystyle \lim_{x \rightarrow \infty}\left( x \times 0 \right)$$  To clarify, this question assumes ${0}$ is a constant and is absolutely zero ("true zero"), and not another figure approaching or is approximately zero ("near zero"). Thus, the question is not asking what "near zero" times "near infinity" is.  I know that ${\infty *0}$ is undefined, however my difficulty is that I'm unsure whether the answer to the problem is undefined because ${\infty *0}$ is undefined.  From my understanding, a limit does not ever 'reach' infinity - it only approaches infinity, thus there are a rational amount of numbers. As  ${x\cdot 0=0}$, when x is not ${\infty}$, it seems to me that in all cases of $x$ approaching infinity the answer could also be ${0}$.


Set of all functions of $\mathbb N$ $\to$ $\mathbb R$

I got a question about the cardinal of set of all function of $\mathbb N$ $\to$ $\mathbb R$. I think that the cardinal number of the set is C because the range of all function is R which the cardinal number of it is C, but I dont knowhow to prove it.  Thank you,


How to create a sequence with leading zeroes using brace expansion

When I use the following, I get a result as expected:  $ echo {8..10} 8 9 10   How can I use this brace expansion in an easy way, to get the following output?   $ echo {8..10} 08 09 10   I now that this may be obtained using seq (didn't try), but that is not what I am looking for.  Useful info may be that I am restricted to this bash version. (If you have a zsh solution, but no bash solution, please share as well)  $ bash -version GNU bash, version 3.2.51(1)-release (x86_64-suse-linux-gnu)


How to send promotion email after quick registration

In my project there are two types of user.   Normal User Lawyer   I create a registration form using profile 2 module. Now problem is I want to send promotion email to Lawyer after registration so I create Action for send email and then create trigger for user. In send email I choose [user:profile-lawyer-registration:user:mail] for email address. registration has done successfully and receive email about registration link, but not receive the promotion email. They gives following error:     Error: Unable to send e-mail. Contact the site administrator if the problem persists.   Status message:     Success: A welcome message with further instructions has been sent to your e-mail address.


When I run   ~$ unzip android-sdk_r24.0.2-linux.tgz   I get the error message   unzip:  cannot find or open android-sdk_r24.0.2-linux.tgz,    android-sdk_r24.0.2-linux.tgz.zip or android-sdk_r24.0.2-linux.tgz.ZIP.   Why is this and what can I do to solve this problem?


Is it possible to use Ubuntu sources in Debian and vice versa?

Is it possible to use Ubuntu apt sources on Debian 10? Also is it possible to use Debian apt sources on Ubuntu? After saying that, is this recommended?


Why can't we keep the hats after Winter Bash?

It would be great if the hats could be kept and worn after Winter Bash. Why can't the hats be kept for the year until the next Winter Bash?  Furthermore, the design of the hats fit all seasons, not just suitable for winter, though it's serves a greater purpose during winter since it's cold ;)


Well I got it from a competitive exam paper from 2012. $$ {  } $$ Let $a_n$ be the number of all $n$ - digit positive integers formed by digits $0,1$ or both such that no consecutive digits in them are $0$. Let $b_n =$ number of such integers ending with $1$ and  $c_n =$ number of such integers ending with $0$.  $$ {  } $$ Then I made a table: $$1$$ $$10,11$$ $$101, 110, 111$$ $$1010, 1011, 1101, 1110, 1111$$ $$10101, 10110, 10111, 11010, 11011, 11110, 11111$$ $$....\text {etc.} $$ While $c_n=F_n$ is clearly the Fibonacci sequence, $b_n=F_{n+1}$ and $a_n=F_{n+2}$. How? Is there a way to prove it? I thought perhaps we could use combinatorics but, just a thought, no way out. Any help/suggestions are welcome. Thanks!


The Walking Dead: wouldn't all nuclear reactors be down?

Since there is no electricity, wouldn't all the nuclear reactors around the country be down and already released radiation into the air? Why is there no sign of this?


Does Fermat's Little Theorem tell us anything about $a^{\frac{p - 1}{2}}$?

Fermat's Little Theorem states that, if $p$ does not divide $a$, then:  $$a^{p - 1} \equiv 1 \pmod{p}$$  From this, can we derive the following:  $$a^{\frac{p - 1}{2}} \equiv \, ?\pmod{p}$$  If not, is there an answer to what $?$ should be in the above congruence?


How can a question be marked duplicate by two users?

I marked an answer as duplicate. How is it possible that another user also marked that answer as duplicate? Shouldn't the question be closed on first marking of duplicate?  Let me explain  I marked an answer () as duplicate of (). After doing that the former question is showing     How is possible that two users mark same question as duplicate? Shouldn't the question be closed on first marking of duplicate?  The other user has 4k reputation (as of today) and I guess minimum 3k is required to mark and answer as duplicate.  Am I correct or not?


Why do videos not play when Bluetooth headphones are connected?

I have Ubuntu MATE 16.04 and Sony WH-1000 XM2 headphones. They worked with my computer before, but today I noticed that Amazon Video and YouTube don't play videos when the headphones are connected via Bluetooth. I have no idea why / how to investigate the problem.  When I turn them off, the videos start playing immediately.  What is going on / how can I investigate the problem?


I am a Swedish citizen traveling to Kyrgyzstan via Russia. Do I need a transit visa while waiting for my flight iin 24 hours?


how to see updates on questions I commented on

in Stackoverflow, I happen to just post a comment on someones question; yet whenever that question is updated or receives answers or comments, I don't get any warning whatsoever. How do I activate that or manage those questions?


Standardise the order which Review Queues are in across the site

Can the order that the queues appear in on the  and in the review drop down be made consistent? Right now the review queue page is ordered by size of queue, while the drop down has a static order resulting in them not having the same order:    Note this was originally posted as  on  as the review queues are currently being looked at, however I was asked to post it as a new feature request.


I have something working on a computer which is displaying its results (in this case, a very large rsync displaying the files as it goes, but other stuff happens), is there any way i can check on it's progress from a remote ssh connection, or do i have to wait until i can get back to that machine? I know how to check for when it's finished, I'd just like to know where it's at now)


Interpreting main effect and interaction

I am doing a simple marketing project that has the following types of variables:   X1 - continuous (e.g. income) X2 - categorical (e.g. gender) Y - continuous (e.g. number of a product type purchased such as tubs of ice-cream)    I am interested in the relationship between income (X1) and product purchase (Y) but also the effect of gender (X2) on this relationship. (i.e. interaction or moderation effect).  I have centered X1 and have used the general linear model in SPSS. The result on Y is as follows:   X1 - significant X2 - not significant X1*X2 - not significant   How do I interpret this result in terms of main effect and interaction?


How to get out a stuck cd out of my mac mini (not the actual model the one from 2010? (slot-in drive)

I tried everything on this page:  except Open Firmware (Intel macs doesn't support this).  Then I tried using the terminal but this didn't work either.  Every time I bootup my mac the drive tries to eject it but it can't. I ran the Apple Hardware Test (hold d on startup) and it sayed that all is fine. (it also tested the slot in drive).  And I put my mac upside down and booted it up (hoped that the cd could come out) but it didn't work. (same problem)  How can I get that out of my slot in drive? Mayby with a tweezer?  Any ideas?  PS: in finder there's no visible cd and in the diskutility there's nothing too


It shows this error  oot@kali:~# apt-get install software-center Reading package lists... Done Building dependency tree        Reading state information... Done Package software-center is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source  E: Package 'software-center' has no installation candidate


Let  $G(V,E)$ be a simple directed graph such that  • for each pair of vertices $u\neq v$, exactly one of the two edges $(u,v)$ or $(v,u)$ is in $E$  Prove that there is a vertex $s \in V$ such that for all vertex $v\neq s$,   • either $(s,v) \in E$,  • or there exists  $u \in V$ such that  $(s,u) \in E $and$ (u,v) \in E.$  I don't know how to prove it please give me some help to prove it.


Good evening to everyone, My question is simple but I'm unable to find the answer. I'd like to input the size in mm (or meters) when scaling an arista instead of instroducing the scale unit with the keyboard. Just to be more precise. Is this possible? The exact issue is that I would like to scale the edge in the picture by introducing the exact mm but I can't find how to do it.  Thanks in advance. Jaume


Book/Series Identification: magic talents and secret dragon eggs

I'm looking for a book I read when I was younger, around 2000 or 2001. (It was for an assigned reading group in elementary school, so it's about on a similar reading level as The Supernaturalist by Eoin Colfer, which was assigned for the same group but otherwise has nothing to do with the book I'm looking for.)  The book was about a girl and her little brother. I don't remember what happened to their parents, but the pair wound up on the run, hiding from society because they both had magical talents. In the book, the countries were holding a staged war that only people with magical talents were drafted to fight in - ostensibly because people without magic would be at a disadvantage when fighting magic-users, but actually because it was a good way to kill off everyone with magic.  The two fail to escape the war, but in the chaos of battle, they cross the border and wind up in a country they've been trained to fear. They hired at a castle or very large manor, and pretend to be citizens of the new country without magic. The girl's talent is an ability to communicate with animals so she just doesn't talk to them in front of anyone, and it's not made clear until the end of the book what her brother's talent is, but suffice it to say they can reasonably pretend not to have magic when they need to. Actually, the girl and her brother briefly join a wolf pack (before they got sent to war in the first place) and the wolves tease the girl for "burning" (cooking) her meat.  The girl, of course, falls in love with the lord of the manor, and he begins to confide in her as well, and after hearing some of his secrets, she tells him most of hers.  Major plot developments included the reveal that dragon scales in the soil were responsible for people's magic talents, and that the love-interest-guy was hiding dragon hatchlings in his basement (the governments thought they had hunted dragons to extinction). Also the brother's talent turned out to be manipulating humans to do whatever he wanted; it wasn't perfect mind control but it was enough to keep people off his scent for the most part while also making his life easier.  I think the brother ran away in the end, after causing some problems. There were lots of loose ends, left wide open for a sequel, so I really want to find this book again and hopefully read the whole series. Also if I remember right, the main character's name wasn't quite Melanie, but it was similar and had a y in the middle somewhere, but I'm less sure about that detail


How to get my old coc account back using play games

I've been playing coc for a long time and i connected it to play games. One day i accedentaly uninstalled it,  so how do i get it back using play games.  Please help me


Sum of series $\frac{1}{2 \cdot 3 \cdot 4} + \frac{1}{4 \cdot 5 \cdot 6} + \frac{1}{6 \cdot 7 \cdot 8} + \cdots $

What is the limit of series $\frac{1}{2 \cdot 3 \cdot 4} + \frac{1}{4 \cdot 5 \cdot 6} + \frac{1}{6 \cdot 7 \cdot 8} + \cdots $?  The $n$th summand is $\frac{1}{(2n)(2n + 1)(2n+2)} = \frac{1}{4} \frac{1}{n(2n+1)(n+1)}$.  I have tried expressing this as a telescoping sum, or as the limit of Riemann sums of a partition (the usual methods I normally try when doing this type of question- what are some other strategies?)


I have followed below steps to install a trusted authority certificate:  sudo cp mycert.cer /usr/share/ca-certificates/mycert.pem sudo dpkg-reconfigure ca-certificates sudo update-ca-certificates   Now, I want to remove this certificate as it is going to expire soon. Can someone please provide me steps to uninstall a previously installed certificate?


When I render my image, it renders perfectly fine, but it doesn't save out.  Can anyone explain how to get my image to save after rendering?


I'm a bit confused about the druid's spellcasting. I checked several forum posts, the errata and the PH in German and English but still got a problem. The 5e PH says on p. 66:      Casting the spell doesn’t remove it from your list of prepared spells.   Does this mean if I prepared Healing Word only one time I can use it as many times as I want to without resting? It's a big discussion between me, some companions and our DM. It feels way too overpowered to be true but everyone understands it this way.  p. 201 says:     Some characters and monsters have special abilities that let them cast spells without using spell slots. For example, a monk who follows the Way of the Four Elements, a warlock who chooses certain eldritch invocations, and a pit fiend from the Nine Hells can all cast spells in such a way.   Is this such an example? Thank you for your help! Greetings


Show a real polynomial has at least one zero

How do I show that a real polynomial function of odd degree has at least one real zero? That is when the function is 0 and cuts the x-line.   This is what I have got so far:  f(x) = x^(2k+1)   Can I then put x to zero and that proves it? However, that doesn't feel like I'm proving it for all real polynomial functions of odd degree.


How can I see hidden folders in Nautilus?

Can someone please tell me how I can display hidden folders with Nautilus?


I want to prove that the topological space $\mathbb{N}$, with an open set defined as a set with a finite complement, is not path connected.  In case it is relevant, I have already shown (at least I hope so) that this space is connected and compact.  My plan is to suppose that we have a continuous function $$f: [0,1] \to \mathbb{N}$$ such that $f(0)=n$ and $f(1)=m$, where $m,n\in\mathbb{N}$, and then produce a contradiction.  It seems to me that the definition of continuity I need is probably the one that says that the open sets in the range must come from open sets in the domain, or else the one that says that closed sets in the range must come from closed sets in the domain.  Other than that, I am a bit stuck.  Any tips would be greatly appreciated.  *BEGIN EDIT: Thanks to David Moews comments, I can see now how the problem reduces to showing that $[0,1]$ cannot be written as the union of countably many disjoint closed sets. On the MathOverflow post  referred to in the comments, I found this sketch of a proof:     "The proof I like uses the fact that a nested sequence of open intervals has non-empty intersection provided neither end point is eventually constant. Now one inductively constructs a sequence of such intervals as follows. Each interval is a component of the complement of the union of the first n closed sets, for some n. Then wait till the next closed set intersects that interval. (If it never does, then we're trivially done.) It cannot fill the whole interval, and indeed must miss out an interval at the left and an interval at the right. So pass to one of those subintervals in such a way that your left-right choices alternate. Done."   I am not sure if I understand this argument correctly. Here is my version of it:  We know that for $n=f(0)$ and $m=f(1)$ there are closed sets $[0,a]$ and $[b,1]$ in $[0,1]$, possibly singleton,  such that $f([0,a])=n$ and $f([b,1])=m$. The union of these two closed subsets $[0,a]\cup [b,1]$ is a closed subset of $[0,1]$, with the open subset $(a,b)$ as its complement. Suppose that $[0,1]$ can be written as a union of countably many closed and disjoint sets. Then there is a closed set $[c,d]$ that lies within $(a,b)$. Since there exists $x$ such that $a=Inf((a,b))<x<c$, etc, we now have $[0,1]=[0,a]\cup (a,c)\cup [c,d]\cup(d,b)\cup [b,1]$. Similarly, there must be a closed set $[e,f]$ that lies within $(a,c)$ so that $(a,c)=(a,e)\cup [e,f]\cup (f,c)$. Note that $(f,c)\subset (a,b)$. We can proceed inductively so that $(f_{n+1},c_{n+1})\subset (f_{n},c_{n})\subset ...\subset (a,b)$.  So there is always another open set, and if we can show that this set contains a point, then there is a point that is not in the union of countable closed and disjoint sets and we have a contradiction.  I'm not quite sure how to show this but perhaps I could argue:  Since $(a,...,f_n,f_{n+1},...)$ is strictly increasing and $(b,...,c_n, c_{n+1},...)$ is strictly decreasing and since $\forall n, f_n\leq c_n$, they are bounded monotone sequences of real numbers and must converge. Thus we have our point.  Is this line of thinking correct. Or have I misunderstood something?  I'm sorry if I am going over old territory, but I just want to make sure I am on the right track. Thanks in advance for any help. *END EDIT


how to convert this string to a datetime using javascirpt

an API has recently updated its date from "2021-05-23T23:59:20" format and is now returning a date string in this format "/Date(1621832360000-0500)/" ,  how can I convert this to an actual date? my old code use to work using the other format but now with the new format im getting invalid date .  whats the proper way to go about this. The time has to be exact so i believe i need the -0500 at the end. var getDate = "/Date(1621832360000-0500)/" ;   var eventDate = new Date(getDate); var day = eventDate.toLocaleString('en-us', {   day: '2-digit', });   console.log(day)


Is the response linear in the predictor variable in the linear regression model?

If I am correct, the linear regression model is said to be a model where the response is linear in the parameters. That allows the response to be nonlinear in the predictor variables.  I was wondering if there is a name for the model where the response is linear in both the parameters and in the predictor variables, so that people will easily understand its difference from the linear regression model?


Apple said we can use iMovie to make App Previews, but I can't export the correct size using iMovie

I'm trying to create an App Preview for an iPhone app.  I recorded a screen capture of the app in the native resolution of the phone.  Then I imported the video in iMovie and used iMovie to add transitions and text, and to arrange the clips.  According to Apple, App Previews should be 640x1136 for the iPhone 5 portrait size, but the export menu doesn't support this size or any custom sizes.  Apple said we could use iMovie, but this doesn't seem to work. How can I change the export size?


Whats the motivation to demean variables when estimating an interaction effect?

I am trying to estimate a regression model where I am interested in the effect of a certain magnitude, probability and expected value (probability * magnitude ) on reaction times. I was told that it is necessary to demean probability and magnitude before estimating its product. Can anyone give me an intuition in why you would use ev=demean(prob)*demean(mag)? Thanks! Laurie


Proof Concerning Indexed family of Sets and Intervals

I have been stuck on the following problem for some time.  I know to prove two things are equal, you use the proof where you show they are both subsets. I think I was able to show that the set on the left, (which I called A) is a subset of the interval through simple logic, but to show the converse I am having some issues. I attached my working thus far for anyone to look at it, but please note that after the line " $ \Leftrightarrow \alpha \geq -1 = \alpha + 1 \geq 0 and  \alpha \leq -2 ....$" the rest is tata (lol- but an attempt to work towards what I know would be the end of the proof, showing that a belongs also to A) I have tried using the hint, but then I end up with something along the lines of '$n > \alpha + 1$ so  $n + 1 > \alpha$', which does not bring me closer to either -x, or x+1 of the interval on the left. Any help or suggestions would be greatly appreciated. Thanks in advance.


Number of integer solutions of $x^2 + y^2 = k$

I'm looking for some help disproving an answer provided on a  I posted about computing the number of double square combinations for a given integer.    The original question is from the Facebook Hacker Cup       Source: Facebook Hacker Cup   Qualification Round 2011      A double-square number is an integer $X$   which can be expressed as the sum of   two perfect squares. For example, 10   is a double-square because $10 = 3^2 + 1^2$.   Given $X$, how can we determine the   number of ways in which it can be   written as the sum of two squares? For   example, $10$ can only be written as $3^2 + 1^2$   (we don't count $1^2 + 3^2$ as being different). On the other hand,   $25$ can be written as $5^2 + 0^2$ or as   $4^2 + 3^2$.      You need to solve this problem for $0 \leq X \leq 2,147,483,647$.      Examples:      $10 \Rightarrow 1$      $25 \Rightarrow 2$      $3 \Rightarrow 0$      $0 \Rightarrow 1$      $1 \Rightarrow 1$   In response to my original question about optimizing this for F#, I got the following response which I'm unable to confirm solves the given problem correctly.       Source:       Again, the number of integer solutions   of $x^2 + y^2 = k$ is four times the   number of prime divisors of $k$ which   are equal to $1 \bmod 4$.      Knowing this, writing a program which   gives the number of solutions is easy:   compute prime numbers up to $46341$ once   and for all.      Given $k$, compute the prime divisors of   $k$ by using the above list (test up to   $\sqrt{k}$). Count the ones which are   equal to $1 \bmod 4$, and sum. Multiply   answer by $4$.   When I go through this algorithm for $25$, I get $8$ which is not correct.          For each prime factor (pf) of $25$ ($5$, $5$ are prime factors of $25$)         if pf % $4$ = $1$ (true for both $5$'s), add $1$ to count      return $4$ * count (count would be $2$ here).          So for $25$, this would be $8$


A hard drive that I use only for data storage still has GRUB from past Ubuntu installations.  How can I remove GRUB from it without harming the rest of the drive's data?  Background  I occasionally move the data drive between computers with various boot order configurations, so I would like it to be non-bootable in order to avoid having to accommodate it in each computer's BIOS settings.  When I power on a computer while only the data drive is attached, the following appears:  error: no such device: fdf38dd4-9e9d-479d-b830-2a6989958503. grub rescue>    I can confirm from old backups of /etc/fstab that this was the UUID of a root partition that I recently reformatted and which . Here's the the data drive's  and raw .  Please note that I'm not interested in workarounds that don't answer my primary question. I can think of several ways to work around this issue, but it bothers me on principle that I don't know how to directly resolve it. Every installation procedure should have a counterpart uninstallation procedure.


I've written various pieces of code that connect to LDAP servers and run queries, but it's always been voodoo to me. One thing I don't really understand is the concept of a bind DN.  Here's an example using the ldapsearch command-line tool available from openldap.  (Ignore the lack of authentication.)  ldapsearch -h 1.2.3.4 -D dc=example,dc=com [query]   What is the purpose and function of the -D dc=example,dc=com part of this? Why do we need to bind to a particular location in the directory hierarchy?  Is it to establish which part of the directory my queries should apply to?  E.g. if the root node of the directory is dc=com, and it has two children (dc=foo and dc=bar), maybe I want my queries to be against the dc=foo,dc=com subtree and not the dc=bar,dc=com subtree?


How can I pull the row from the following data

Using Oracle SQL.   COL1        COL2                COL3    COL4 2017-12-01  2017-12-01 02:00    296.82  161 2017-12-01  2017-12-01 06:00    287.25  158 2017-12-01  2017-12-01 10:00    290.3   157 2017-12-01  2017-12-01 14:00    345.58  157 2017-12-01  2017-12-01 18:00    285.13  156 2017-12-01  2017-12-01 22:00    287.68  158 2017-12-02  2017-12-02 02:00    306.5   164 2017-12-02  2017-12-02 06:00    315.79  166 2017-12-02  2017-12-02 10:00    307.59  164   What I need to do is get the MAX(COL3) from each day but I need the other values out of the row as well....I can group by COL1 but I'm having issues returning the other values COL2 and COL4 from the row as well.   Almost there however this is not working It is saying that the from is in a bad location.....  SELECT *,MAX(VDC) OVER (PARTITION BY DATETHE) from (select  trunc(x.lvl) "DATETHE", energy_metrics_pdu.WATTS_READING "PDU", case energy_metrics_pdu.watts_reading when 0 then NULL else round(energy_metrics_vdc.watts_reading/energy_metrics_pdu.WATTS_READING,2) END "RATIO", energy_metrics_vdc.watts_reading "VDC" from (  SELECT to_date('01-DEC-2017','DD-MON-YYYY') + (level/24)-0  lvl         FROM dual         CONNECT BY LEVEL <= (5*24)-1 ) x          LEFT JOIN energy_metrics_pdu on to_char(x.lvl, 'YYYY-MM-DD HH24') = to_char(energy_metrics_pdu.READING_DATE, 'YYYY-MM-DD HH24')          LEFT join energy_metrics_vdc on to_char(x.lvl, 'YYYY-MM-DD HH24')||':00' = to_char(energy_metrics_vdc.READING_DATE, 'YYYY-MM-DD HH24:MI')         where energy_metrics_pdu.watts_reading IS NOT NULL  order by "DATETHE" ASC          );    Any suggestions...


Python - Display Every Permutation of a List or Set of Strings

As an example, I have the following list:  ['ABC','DEF','GHI','JKL']   By my reckoning, there should be 26 combinations i.e.  ABCDEFGHIJKL ABCDEFJKLGHI ABCGHIDEFJKL ABCGHIJKLDEF ABCJKLDEFGHI ABCJKLGHIDEF ...   How would I do this in Python?  Thanks


Given the congruence $x^3 \equiv a \pmod p$, where $p \geq 5$ is a prime and $\gcd(a,p)=1$, prove the following:   If $p \equiv1 \pmod 6$, then the congruence has either no solutions or three incongruent solutions modulo $p$ If $p \equiv5 \pmod 6$, then the congruence has a unique solution modulo $p$   Help me...  I don't know what I learn because Prof teaches so quickly.  So I need your help to organize my thoughts.


I have noticed that the iOS app isn't highlighting syntax correctly, even with the explicit comment:  <!-- language: whatever -->   For example, compare  in Chrome for iOS (47.0.2526.107):    with the SO app (1.4.2.3):


Does there exist an holomorphic function such that $|f(z)|\geq \frac{1}{\sqrt{|z|}}$?

I have some trouble solving this problem: Does there exist a holomorphic function $f$ on $\mathbb C\setminus \{0\}$ such that $$|f(z)|\geq \frac{1}{\sqrt{|z|}}$$ for all $z\in\mathbb C \setminus \{0\}$? I don't know where to start. My intuition is that you would get a problem with the singularity near $0$, but I am not sure how to prove it. Any help would be appreciated! Thanks!


Can anyone tell me the name of these sentences?

I am a chinese student and one of my friend, a chinese, wrote sentences like this:  Just a little above me, he was fighting with all his might.  On the summit of the mountain, he cried with joy.  He was pretty certain that these sentences were correct but I am not so sure. I've heard sentences like His eyes bright, he talked vigorously or Her coat barely on her shoulder, she dashed out of her house, but I have never seen sentences like the ones my friend wrote, the ones with no subject in the front. Can anyone tell me the name of the sentences my friend wrote? And if possible, can you also tell me if the name of the sentences I wrote is verbless clause?  Thanks.


I've recently stumbled upon machine learning, generating user recommendations based on user data, generating text teaser based on an article. Although there are tons of framework that does this(Apache Mahout, Duine framework and more) I wanted to know the core principles, core algorithms of machine learning and in the future implement my own implementation of machine learning.  Where do I actually start learning Machine Learning as its basics or Machine Learning starting with concepts then to implementation? Although I have an weak to average math skills(I think that this will not hurt? If So what branches of mathematics should I study before Jumping to Machine Learning?)  Note that this is not related to my academics rather I want to learn this as an independent researcher and I am quite fascinated how machine learning works


The custom reject reason box goes outside the popup in suggested edit review in Meta Stack Exchange

The custom reject reason box goes outside the popup in suggested edit review. See here.    Can we fix this? Please.


When does Arrow S04E19 occur in relation to The Flash?

At the end of Arrow S04E19 we see that      Barry still has his speed, when he runs off after Oliver says "I want to be alone".   So where does this Arrow episode occur in time, in relation to the Flash? Because as of The Flash S02E18's ending we know that      Barry no longer has any speed force, Zoom siphoned it in exchange for Wally West.   So where does this episode of Arrow occur in relation to the CW-verse timeline?


Here is my scenario.  For the example lets say that I need to return a list of cars based on a search criteria.  I would like to have a single View to display the results since the output will be the same, but I need several ways of getting there.  For instance, I may have a Form with a textbox to search by year.  I may have another separate page that contains a hyperlink for all red, Toyota cars.  How do I handle these multiple scenarios in the same View and Controller.  My dilemma is that the search could contain several options… year, make, model, etc but I don’t know where to put them.  What is the best approach for this?  Should I define the parameters in the routing or go with query strings, etc?


For closed subsets $A,B \subseteq X$ with $X = A \cup B$ show that $f \colon X \to Y$ is continuous iff $f|_A$ and $f|_B$ are continuous.

I was just trying to solve an exercise in Munkres' Analysis on Manifolds to get better at continuous functions and topology in $\mathbb{R}^{n}$, and I got stuck. Here it is:      Let $X = A \cup B$, $A$ and $B$ are subspaces of $X$. Let $f:X \rightarrow Y.$ Suppose that the restricted functions $f_{|A}:A \rightarrow Y$ and $f_{|B}:B \rightarrow Y$ are continuous. Show that if both $A$ and $B$ are closed in $X$, then $f$ is continuous.    Our definition of continuity is:  $f$ is continuous at $x \in X$ if for each open set $V$ of $Y$ containing $f(x)$, there is an open set $U$ of $X$ containing $x$ such that $f(U) \subset V$. $f$ is continuous if it is continuous at each point of its domain.  What I've tried so far:  Suppose $A$ and $B$ are closed in $X$. Suppose $A \cap B = \emptyset$. Then $X -A$ is open in $X$. But $X - A = B$ which is closed in $X$, which is a contradiction. Hence, $A \cap B \ne  \emptyset$. I'm not sure if this will be useful in the problem or not. If $x \in X$, then it's either in $A$ or in $B$. Suppose without loss of generality that it's in $A$. Then for all open sets $V$ of $Y$ s.t. $f(x) \in V$, $\exists$ an open set $U_{1}$ of $A$ s.t. $U_{1} \subset A, a \in U_{1}$ and $f(U_{1}) \subset V$. This is almost what we want, except that we want to find an open set $U$ of $X$ s.t. $U \subset A, a \in U$ and $f(U) \subset V$. This is because $U_{1}$ being open in $A$ does not necessarily mean that it's open in $X$ because $A$ is closed in $X$. (i know how to expand this argument out if needed) My idea now is to try to find a subset $U$ of $U_{1}$ such that $U$ is open in $X$. We have two cases:  (1) $U_{1}$ does not intersect the boundary of $A$. (2) $U_{1}$ intersects the boundary of $A$. Now I'm not sure what to do. I'm wondering if it would help to investigate the relationship between Bd(A) and Bd(B).. In any case (no pun intended), any help/advice would be greatly appreciated. :)  Sincerely,  Vien


Ubuntu 12.04 LTS install failed. swap partition failed

I recently was lucky enough to get a laptop for free. The only setback is it had no operating system. I burned ubuntu 12.04 LTS to a disk, and when i boot it in the laptop it loads. I tried installing it a few times, but during the installing process it says there was an input/output error. so after hitting retry a few times it still didnt work so i clicked ignore. While the actual installing process happens it says failed to create swap partition. I dont have any other os on it nor do i think i will (besides ubuntu). If anybody knows how to fix these errors i would be extremely happy.  Thank you in advance for your help


Techniques for cutting out hair accurately

I use the Pen Tool for 90% of the situations where I need to cut someone or something from a photo but sometimes it gets tricky, especially when it comes to hair.  Let's take the following image for example:     Pen Tool - don't even think about it, it would take years to do an accurate cut so you usually do a more bulky cut. Magic Wand & Quick Selection Tool - in some cases these can work, especially if you know your way around with Tolerance and Refine Edge Blending modes are very useful in some situations also   When confronted with such an image I usually do use one of the tools from above + get something like 10 color samples from the hair, create a new brush that I adjust from photoshop's brush engine and start drawing hair.  From everything I've tried, redrawing hairs gave me the best results so far.     Q: Is there a better way to get an accurate selection when cutting hair? Or, how can I improve what I've got so far?   PS: Just wanted to add that a situation where the background behind the subject is in a single color like in the sample I offered is rare, therefore an answer based entirely on same color selection won't help that much.


What is the difference between "being" and "having been" in this context?

Being a teacher, she likes children.    AND    Having been a teacher, she likes children.   What is the difference between these two?


Use congruence to show that the output of a natural number function is always divisible by 6

I have been asked to show that for any natural number $n$, $(7n+30)(13n+7)(n+2)$ is divisible by 6. I can show that this function is congruent to $n(n+1)(n+2)$. I noticed that this function is the sequence of tetrahedral numbers multiplied by 6 which already proves it but I have been told by a tutor that introducing a sequence that is not discussed in the course is insufficient. I am not sure if I am able to use induction as the question only asks for me to use congruences to show that it is divisible by 6. I would like to know if this is possible without induction in a way that specifically uses modulo congruence techniques.


I accidentally marked the wrong question as a duplicate. How can I replace it with the correct duplicate?

I accidentally flagged  as a duplicate of , when I intended to flag it as a duplicate of . I am presented with the message "You have already flagged this post for moderator attention" whenever I try to replace the incorrect duplicate flag. Is there any way that I can fix this mistake, even though Stack Overflow is preventing me from fixing it?


Program to check/look up UTF-8/Unicode characters in string on command line?

I've just realized I have a file on my system; it lists normally:  $ ls -la TΕSТER.txt  -rw-r--r-- 1 user user 8 2013-04-11 18:07 TΕSТER.txt $ cat TΕSТER.txt  testing   ... yet, it crashes a piece of software with a UTF-8/Unicode related error. I was really puzzled, since I couldn't tell why such a file is a problem; and finally I remembered to check the output of ls with hexdump:  $ ls TΕSТER.txt  TΕSТER.txt $ ls TΕSТER.txt | hexdump -C 00000000  54 ce 95 53 d0 a2 45 52  2e 74 78 74 0a           |T..S..ER.txt.| 0000000d   ... Well, obviously there are some bytes in between/instead of some letters, so I guess it is a Unicode encoding problem. And I can try to echo the bytes back to see what is printed:  $ echo -e "\x54\xCE\x95\x53\xD0\xA2\x45\x52\x2E\x74\x78\x74" TΕSТER.txt   ... but I still cannot tell which - if any - Unicode characters these are.   So is there a command line tool, which I can to inspect a string on the terminal, and get Unicode information about it's characters?


I have the following plot and I would like to have the horizental axis fixed, but it scales and therefore I cannot see the details of the values between 0-50. To be more specific, in the horizental axis, I have information about the size of the files, so the axis should not scale according the number.  On the other hand, I would like to set the size of plot manually because of that I have the following line :  \pgfplotsset{width=20cm, height=15cm}   \begin{tikzpicture}  \begin{axis}[     title={Results},     xlabel={Size of file},     ylabel={The amount of time per second},     xmin=0, xmax=2200,     ymin=0, ymax=600,     xtick={1,5,10,100,500,1000,2000},     ytick={0,5,10,20,30,40,50,100,150,200,300,400,500},     legend pos=north west,     ymajorgrids=true,     grid style=dashed, ]  \addplot[     color=red,     mark=square,     ]     coordinates {     (1,4.5)(10,7)(100,26)(500,113)(1000,278)(2000,0)     };      \addlegendentry {existing}      \addplot[     color=blue,     mark=triangle,     ]     coordinates {     (1,4.5)(10,6.5)(100,21)(500,86)(1000,177)(2000,398)     };     \addlegendentry {Partitioning}      \addplot[     color=green,     mark=star,     ]     coordinates {     (1,0.2)(10,1.2)(100,14.5)(500,0)(1000,0)(2000,0)     };     \addlegendentry {Model}   \end{axis} \end{tikzpicture}


How to install drivers for NVIDIA GeForce FX 5200 on Precise

Ok, I'm a total Linux noob. I was able to install 12.4 without issue, except that it says in the system settings that the graphics card/driver is "unknown".  I have NVIDIA GeForce FX 5200, and have not been able to get it installed. I've found the driver at NVIDIA but couldn't figure out how to actually install it. I found instructions that used apt-get to automatically find the current driver and install it, and that came close. At least then it showed up in the 3rd party drivers list. It said it was installed but not being used? And I was unable to find out why that might be, or how to get the system to use it  Two questions: 1. CAN/SHOULD my graphics card work with 12.4? 2. If so, HOW?  I'm running a 100% fresh install, so what's the step-by-step from there?