This is probably a silly question but I need some help. I opened a file that I've been working on for about a month in the new 2.8 version of Blender. However when I tried to reopen the file in version 2.79, the scene is completely empty. Here is where the problem lies for me, I accidentally saved over the original file save while in version 2.8 . Please help. Thanks!


Why write $[a,+\infty)$ instead of $[a,\infty)$?

I have seen $[a,+\infty)$ written and also $[a,\infty)$, for some $a \in \mathbb{R}$.  Why would someone want to write $[a,+\infty)$ instead of just $[a,\infty)$?


How am I suppose to handle this?  $\lim_{x\rightarrow \infty}\left(1+\frac{\pi}{x}\right)^{2x}$


I know times can be used in "old times" or "in times of war" for instance, in the general meaning of an epoch.  I'm wondering what is the meaning of "times" in "", is that just "our epoch in NY", something like news from NY?


Number of partitions of an $n$-element set into $k$ classes

A partition of a set $S$ is formed by disjoint, nonempty subsets of $S$ whose union is $S$. For example, $\{\{1,3,5\},\{2\},\{4,6\}\}$ is a partition of the set $T=\{1,2,3,4,5,6\}$ consisting of subsets $\{1,3,5\},\{2\}$ and $\{4,6\}$. However, $\{\{1,2,3,5\},\{3,4,6\}\}$ is not partition of $T$. If there are $k$ nonempty subsets in a partition, then it is called a partition into $k$ classes. Let $S_k^n$ stand for the number of different partitions of a set with $n$ elements into $k$ classes.     Find $S_2^n$.   Show that $S_k^{n+1}=S_{k-1}^n+kS_k^n$.     --   My work: From the definition of $S$, $S_2^n=2^n$. I think I am wrong somewhere, because when I put this formula into the second part to prove, I get, $$k^{n+1}=(k-1)^n+k \cdot k^n.$$ Please tell me where I am wrong. I think this problem cannot be solved by star-and-bar method as that method finds value for $k$ but does not prove it. Please help!


programmatically taxonomy update node DrupalDefaultEntityController error

When I programmatically create a taxonomy term and update node, in hook_node_presave() I have the following code:  $node->field_status_tags[LANGUAGE_NONE][]['tid'] = $value->tid;   I get the following error:     Notice: Array to string conversion in DrupalDefaultEntityController->cacheGet() (line 369 of  includes\entity.inc).   This is the code I am using. I'm sure the value for tid is right.  /**  * Implements hook_node_presave().  */ function love_layout_node_presave($node) {   /*    *if ($node->nid && $node->moderate) {    *  // Reset votes when node is updated:    *  $node->score = 0;    *  $node->users = '';    *  $node->votes = 0;    *}    */   if($node->type == 'status') {     $pattern = '/#([^\\#|.]+)#/';    preg_match_all($pattern, $node->title, $matches, PREG_SET_ORDER);    $node->field_status_tags[LANGUAGE_NONE] = array();    foreach ($matches as $key => $value) {        $term_name = $value[1];       $term = taxonomy_get_term_by_name($term_name);       if(!count($term)){        $term = new stdClass();        $term->vid = 1;        $term->name = $term_name;        taxonomy_term_save($term);        $term = taxonomy_get_term_by_name($term_name);        foreach ($term as $value) {           //dpm($value,$key);           $node->field_status_tags[LANGUAGE_NONE][]['tid'] = (int) $value->tid;         }       }else{         foreach ($term as $key => $value) {           //dpm($value,$key);           $node->field_status_tags[LANGUAGE_NONE][]['tid'] = (int) $value->tid;         }       }    }    //dpm($node,'love_layout_node_presave-node');   } }


I am reading a book about algebraic number theory and I'm wondering whether the following statement is true:  Let $K$ be a number field and $\mathcal{O}_K$ its algebraic integers. Let $\beta \in \mathcal{O}_K$, is it true that $N(\beta)/\beta \in \mathcal{O}_K$? ($N$ is the norm of K over $\mathbb{Q}$)  If $K$ is a Galois extension of $\mathbb{Q}$ then we have that the norm is just the product of all Galois conjugates of a given element. Thus $N(\beta)/\beta$ would be the product of all Galois conjugates of $\beta$ except the one corresponding to the identity. Since Galois conjugates of an algebraic integer are also algebraic integers, the above follows.   Now I'm struggling with what happens when $K$ is only a separable extension. (separable always holds since we are in characteristic 0)


Some programs not found when used with sudo

I just installed  to /usr/local/go, and in ~/.bashrc added this line:  export PATH=$PATH:/usr/local/go/bin   Now go works from the command line, but sudo go gives me:  $ sudo go sudo: go: command not found ~ $ sudo echo $PATH /usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/benjamin/algs4/bin:/usr/local/go/bin


So my code is basically this:  List list = new List(new int[] { 1, 5, 8, 8, 8, 2, 3, 3, 4, });         list = RemoveDuplicats(list);  public static List<int> RemoveDuplicats(List<int> list) {    int i = 0;    while (i<list.Count)       {         if (list[i] == list[i+1])           {             list.RemoveAt(list[i + 1]);             return list;           }           i++;       }     return list;   }   It seems like RemoveAt is not working or it's being skipped entirely. So what i should be getting is 1,5,8,2,3,4 but it just prints original list. Where'd i go wrong?


Manipulating very large text file and clustering analysis

I'm trying to work with a (very) large 45gb .txt file that cannot be opened using normal text editors.   Data within each row is separated by a spacing, although there are also spaces within each parameter. For example, 1 row looks somewhat like this:     University of Cambridge CB2 1TQ 0001234567 2011-01-25 12345 11.12345   12.12345 13.12345 14.1234 16.2716)   What I would want to is essentially to clean it up, filter some data, sum up some cells/parameters, append some additional data to each row, and perform clustering analysis (probably with python or C# since I'm starting to pick it up).


Did something expire that should not have? I am using debug symbols on my Ubuntu 20.10 install, and now I get this when I run the apt-get update command. W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ddebs.ubuntu.com groovy Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <ubuntu-archive@lists.ubuntu.com>


I have a Canon 60D that I use for my primary hobby that is photography, but sometimes the pictures that I took are with the incorrect exposure like this:    So I want to know how I can choose the correct exposure for situations like night, intense light, poor light conditions...  PS: The image is intentionally unfocused because I was playing with styling my photos a bit, not that it's a problem.


Let $Tf(x)=\int_{[0,x]}fdm$ for $0 \leq x \leq 1$.  Prove that $C_0((0,1])=\{f \in C[0,1] : f(0)=0\}$ is a closed subspace of $C[0,1]$    I need a bit of help with this one. I was thinking of proving that the complement is open, or maybe showing that given any convergent sequence in $C_0((0,1])$ its limit has to be in $C_0((0,1])$.... Could use some help though!! THanks!


compatibility cleveref and varioref amsmath

I try to use cleveref and varioref and ams* packages together. But I get some trouble, equations and sections label type seems to change and that does work well.  Here is my example:  \documentclass[onecolumn,twoside,openright,a4paper,11pt]{report} \usepackage[utf8]{inputenc}      \usepackage[T1]{fontenc}         \usepackage{hyperref}       % \usepackage{amsmath}        %  %\usepackage{amssymb}       %  %\usepackage{mathrsfs}      %  %\usepackage{amsthm}        %  %\usepackage{amsfonts}      %  %\usepackage{mathtools}     %  %\usepackage{amsbsy, amstext, amscd, amsopn, amsxtra, upref}    %   \usepackage{varioref}   %    \usepackage{cleveref}   \begin{document}  \section{first section} \label{sec1}  bla bla  \begin{equation}     {sigma}={C}:{epsilon}     \label{loiC} \end{equation}  \newpage  As we can see with \vref{sec1}, the reference does not work well and it is the same with \vref{loiC}.  \end{document}   any ideas ?


How to get all inline images in post content?

I want to get all inline images in the post content.   doesn't work for me because they could add the same photo twice. Also this only gets "attached" images, and they could possibly add an image through the HTML editor tab which doesn't attach it to the post.  I want to get an array of all inline images in the order they appear in the post.  Is this possible?


I've created a cube mesh. I've changed its dimensions and from the top face of the mesh, I've extruded. However, whenever I move the top face of the extrusion, it pulls the whole object and not just the extrusion I made like it has with other objects I've extruded from. Why is it acting differently?   Nvm, found out. Disabled soft-selection that I must have enabled by accident.


What are the minimum requirements to run Windows 10?

I am looking to upgrade my system to Windows 10 RTM, but I'm afraid of losing performance.  I researched on the site but found details (maybe I have not sought duty) on the hardware minimum.  What are the minimum and recommended requirements for running Windows 10 RTM?


I need help creating a bootable pen with windows iso. I tried so many ways and nothing... One of my pendrives even broke(doesn't show up in the PC when I connect).  I tried with UNetbootin but if I format my pendrive to fat32, when I restart my PC I got to a screen with only one option "Default". That does nothing.  And if I try to format to NTFS... UNetbootin just don't accept my pendrive.  I tried with Furius(but I don't know how to use this program) and manually with the terminal, but I'm much lazy for that.  PS: When I started I was trying to format to WIN10, but now it doesn't matter, I really need a partition with Windows.  PS2: My PC doesn't have a CD/DVD Reader, so...  PS3: My Pendrive is only of 4GB, my win10 iso is ~3,8GB so I can use, this is not the problem, even if I couldn't use this iso, I could only download a WIN8/7/XP and install another just to get to windows(after this, get to WIN10 is pretty easy).  PS4: I'm running ubuntu 16.10


Is there jerk on Uniform Circular Motion?

I was reading my textbook and I encountered a section where it explains that Centripetal Acceleration is not constant, thus, I wonder if  exists in Uniform Circular Motion? The textbook states that it happens due to the continuous change on the vector's direction. So, pretty much. Does jerk manifest? or, if it does not, why?


Hey guys I have Ubuntu 16.04 installed on my laptop now I really wanna install Windows 7 because there is always that one software that doesn't run on Ubuntu, HELP ASAP  Edit: I recently upgraded to Ubuntu 16.10 with software centre  Second Edit: My question is different because I have Ubuntu 16.10 and before I followed a Ubuntu 14.10 tutorial and it did not work and I could not boot into Ubuntu! So I had to delete Windows and Ubuntu and reinstall Ubuntu!  Third Edit:


Translating a sin curve into one that lingers on its maximums longer

The goal is to create an animation curve mathematically that moves like a sin curve but holds at the extremes. I would also love to be able to parameterize it.  In the graph note how the domain spent at either 1 or -1 increases while the function still transitions smoothly in and out of these extremes. Thus far I have graphs of the following forms with no luck sin(x)*sin(x)^a sin(x)^a // This sort of works when a is [0, 1] however I do not like that the derivative appears infinite when y =0 sin(sin(x)) sin(x)+sin(x+a)  I really have not seen a formula that can do this. Is it even possible to translate a regular sine curve into one that lingers at its extremes? A function that is not even technically sinusoidal would be ok so long as it is periodic or can be made periodic by modulo-ing x.


How to install debug symbol for OpenMPI on 16.04

I couldn't find debug symbol in the official repo:  $ apt-cache search openmpi gromacs-openmpi - Molecular dynamics sim, binaries for OpenMPI parallelization libblacs-openmpi1 - Basic Linear Algebra Comm. Subprograms - Shared libs. for OpenMPI libhdf5-openmpi-10 - Hierarchical Data Format 5 (HDF5) - runtime files - OpenMPI version libhdf5-openmpi-10-dbg - Hierarchical Data Format 5 (HDF5) - OpenMPI Debug package libhdf5-openmpi-dev - Hierarchical Data Format 5 (HDF5) - development files - OpenMPI version libmeep-lam4-8 - library for using parallel (OpenMPI) version of meep libmeep-lam4-dev - development library for using parallel (OpenMPI) version of meep libmeep-mpi-default-dev - development library for using parallel (OpenMPI) version of meep libmeep-mpi-default8 - library for using parallel (OpenMPI) version of meep libmeep-mpich2-8 - library for using parallel (OpenMPI) version of meep libmeep-mpich2-dev - development library for using parallel (OpenMPI) version of meep libmeep-openmpi-dev - development library for using parallel (OpenMPI) version of meep libmeep-openmpi8 - library for using parallel (OpenMPI) version of meep libopenmpi-dev - high performance message passing library -- header files libopenmpi1.10 - high performance message passing library -- shared library libscalapack-openmpi1 - Scalable Linear Algebra Package - Shared libs. for OpenMPI libtachyon-openmpi-0 - Parallel/Multiprocessor Ray Tracing Library - runtime - OpenMPI flavour libtachyon-openmpi-0-dbg - Parallel/Multiprocessor Ray Tracing Library - debug package - OpenMPI flavour libtachyon-openmpi-0-dev - Parallel/Multiprocessor Ray Tracing Library - development - OpenMPI flavour libtachyon-serial-0 - Parallel/Multiprocessor Ray Tracing Library - runtime - serial flavour likwid - toolsuite for performance oriented programmers meep-lam4 - software package for FDTD simulation, parallel (OpenMPI) version meep-mpi-default - software package for FDTD simulation, parallel (OpenMPI) version meep-mpich2 - software package for FDTD simulation, parallel (OpenMPI) version meep-openmpi - software package for FDTD simulation, parallel (OpenMPI) version mpqc-openmpi - Massively Parallel Quantum Chemistry Program (OpenMPI transitional package) netpipe-openmpi - Network performance tool using OpenMPI openmpi-bin - high performance message passing library -- binaries openmpi-common - high performance message passing library -- common files openmpi-doc - high performance message passing library -- man pages relion-bin+mpi - parallel toolkit for 3D reconstructions in cryo-electron microscopy yorick-full - full installation of the Yorick interpreter and add-ons yorick-mpy-openmpi - Message Passing Yorick (OpenMPI build) zalign - parallel local alignment of biological sequences   Do I have to manually install debug symbol from source? I found some related package . It looks like they are from the official repo. But why are they not displayed in apt-cache?


I am in the process of writing some unit tests. In particular I want to test some private methods.  So far the I have come up with using.  #define private public   But I am not happy with this as it will destroy all encapsulation from the point of view of the unit test.  What methods do you use to unit-test private methods.


I'd like to highlight paragraphs such that the highlight color appears as one whole rectangle underlying the entire paragraph. I have looked around but nothing gives me the desired effect so far.  For example \fcolorbox{} from xcolor cannot highlight an entire paragraph; \hl{} from soul leaves out spacings between lines uncolored.  I am wondering how I can do this?


Does the Stone of Good Luck add to my skill rolls?

I'm looking at potentially adding a Stone of Good Luck to my character's possession, but I'm not 100% certain on how it works or if it's worth getting.  The stone's description says:      While this polished agate is on your person, you gain a +1 bonus to   ability checks and saving throws. (DMG p.205)   I am uncertain if this +1 bonus is also applied to all of my skills, or if it is only applied to ability checks.


Evaluate the limit $\displaystyle\lim_{x \to 0}\frac{(e-\left(1 + x\right)^{1/x})}{\tan x}$.

How to evaluate the following limit $$\displaystyle\lim_{x\to 0} \dfrac{e-\left(1 + x\right)^{1/x}}{\tan x}$$ I have tried to solve it using L-Hospital's Rule, but it creates utter mess. Thanks for your generous help in advance.


I have a really confusing error, in the following script. reservations is just a file with 100 lines, let's say something like this:  apple pear fruit ...   cat reservations | while read LINE; do   echo $LINE   for i in {0..2}; do     ssh -o ConnectTimeout=10 admin@render rm -rf /tmp/lock$i     echo $i   done done   (This is already a simplified version of a production script.)  Now, what I would have expected, is to see an output like this:  apple 0 1 2 pear 0 1 2 ...   BUT, I only get the first line, i.e., the output is  apple 0 1 2   If I remove the ssh, everything works! For some reason, the ssh messes up the whole thing, and exits the while loop. I have absolutely no idea why that is!!


Duplicate of   For the Companions, I have a job that is telling me to kill an escaped bandit in Hjaalmarch.  Where can I find him?


Python Calling a Function Name as a Variable

I have a basic sort and search loop. At the end I want to thank the user and display the name of the function used. Is there a format call for doing this?  def arr_sort_binsearch(ar):      item = 8      ar.sort()     l=0     r=len(ar)-1      while l<r:         if (ar[l] + ar[r] == item):             print("{} and {} is: {}".format(ar[l],ar[r],item))             l += 1             r -= 1         elif (ar[l] + ar[r] < item):             l += 1         else:             r -+ 1     print("Thanks for using {}".format(name_of_function?)


If the first derivative helps us to know whether the function is in increment or in decrement  The second one helps us to know wether the function is concave upward or downward  So what about the third derviative?! What does it help us to know  To this moment I don't have any guesses  same with the fourth derivative


I'm trying to write a macro that converts a sequence to a table.  The following code works fine:  \documentclass{article} \usepackage{expl3} \begin{document} \noindent \ExplSyntaxOn \seq_new:N \l_my_a_seq \seq_set_split:Nnn \l_my_a_seq { ; } { (a, b); (b, c); (c, a) } \tl_new:N \l_my_b_tl \cs_new:Npn \printsequence:N #1 {   \seq_pop_left:NNTF #1 \l_my_b_tl {     \tl_use:N \l_my_b_tl \\     \printsequence:N #1   } {   } } \printsequence:N \l_my_a_seq \ExplSyntaxOff \end{document}   and outputs this:    But when I try to place it inside a table, it stops working. The following code results in "TeX capacity exceeded":  \documentclass{article} \usepackage{expl3} \usepackage{tabularx} \begin{document} \noindent \ExplSyntaxOn \seq_new:N \l_my_a_seq \seq_set_split:Nnn \l_my_a_seq { ; } { (a, b); (b, c); (c, a) } \tl_new:N \l_my_b_tl \cs_new:Npn \printsequence:N #1 {   \seq_pop_left:NNTF #1 \l_my_b_tl {     \tl_use:N \l_my_b_tl \\     \printsequence:N #1   } {   } } \begin{tabular}{|c|} \printsequence:N \l_my_a_seq \end{tabular} \ExplSyntaxOff \end{document}   What is the problem here? I haven't used macros before, so I don't know a lot about them.


Can a Cleric leave spell slots open to prepare later?

In , it's explained that Wizards can leave spell slots blank to be prepared later. I want to know if a Cleric can do the same thing: can a Cleric leave spell slots open when they first prepare spells each day, and prepare spells in those slots later in the day?


Can you stay in Turkey for over 90 days within the 180 day visa period but split over different visits?

The Turkish e-visa is valid for a period of 180 days and allows you to stay for a maximum of 90 days. Am I allowed to stay for say 50 days, then another 50 days, over two different visits within the 180 day period?  I'm looking at the e-visa website  and it doesn't seem to be too clear on this.


I have been granted multiple entry Schengen Visa valid for 4 years with the duration of stay of 90 days. Does it mean only 90 days of stay in total during a 4 years period?  I'll be travelling to Schengen Area in September for 25 days, then after 2 month or so I will travel again for 30 days. Similarly, I'll be traveling to the Schengen Area in the future depending on the business meetings.  How will I know, that how many days are left? On what basis the calculations are done?  Also, please explain the "90/180" rule.


Show that $\exists c\in (a,b)$ such that $2f(c)+f'(c)=0$

Let $f$ be a function continuous on $[a,b]$ and differentiable on $(a,b)$, $f(a) = f(b) = 0$  Show that $\exists c\in(a,b)$  such that $2f(c)+f'(c) = 0$  This is a problem on continuity and differentiability, and I have tried to use the Intermediate value theorem and Rolle's theorem with no success.  Any suggestions on how to solve it using the theorems above?


Parametrized curve & differentiation and scalar product

Let $\gamma\in C^2(I)$ be a parametric continous curve with $\parallel \  \dot\gamma(t)\parallel^2 \ = \ 1$.  Show that $\langle \ddot\gamma,\dot\gamma \rangle \equiv 0$.    From that i know that we have to show that the vector of the velocity is perpendicular to the vector of acceleration. From $\gamma \in C^2(I)$ i know that $\gamma$ is exactly two times differentiable so $\ddot\gamma$ has to be constant. Then $\dot\gamma$ should have a constant slope which makes it a straight line. This straight line represents the velocity which should be 1. I think its not very far from here. Any tips?


If $$S=\frac{1}{1+1^2+1^4}+\frac{2}{1+2^2+2^4}+\cdots+\frac{n}{1+n^2+n^4}\,$$ find the value of $14S$.  The question can be simplified to:  Find $S=\sum\limits_{k=1}^n\,t_k$ if $t_n=\dfrac{n}{1+n^2+n^4}$.  As $1+n^2+n^4$ forms a GP, $$t_n=\frac{n(n^2-1)}{n^6-1}\,.$$ But I can't figure out how to solve further. It would be great if someone could help.


What is the Hood size and UV filter size for NIKKOR 18-55 mm and NIKKOR 70-300 mm?

Recently I have purchased a Nikon D3400 having two lenses. They are;   AF-P DX NIKKOR 18-55 mm f/3.5 - 5.6G VR and AF-P DX NIKKOR 70-300 mm f/4.5 - 6.3G ED VR   I would like to purchase a Hood and UV filter for each. I have tried Axcess 67mm YC Clear View UV-HD Lens UV Filter and Axcess 52mm YC Clear View UV-HD Lens UV Filter, but they are not correctly fitting into lens. One (52mm) is smaller and the other (67mm) is larger. Somebody kindly tell me the UV filter and Hood size for both lenses?  Thanks in advance.  EDIT  Inside the cap, its written 55mm (1st lens) and 58mm (2nd lens)


Should an answer that builds on another answer to the same question contain the delta or be self-contained?

Suppose a question has a good answer, but I have a correction or further information to add - more than would work nicely in an edit or a comment. How should I add my incremental improvement answer? In either case, it seems clear that I should link to the original answer (vs. refer  to the "accepted answer") to give credit.  Should I rely on the link to direct people to the answer's content and just include my incremental content in my answer? Or should I incorporate a copy of the original answer's content so that my answer stands alone?  Distinction clarification: This question is distinct from , which solely addresses links to outside material. This question is about links to material within the same question on StackExchange. See  for implications of the distinction.


Multivariable limit - perhaps a trickier problem I am stuck on.

I am trying to solve the following limit:  $\lim_{(x,y) \to (0,0)} \frac{x^4y^4}{(x^2 + y^4)^3}$  (This is a more challenging problem from Folland Calculus, it seems).  I am pretty sure this limit does not exist (however, this is just a guess, and I am not 100% sure.)  I am trying to approach via the paths y = mx and x = my but... they don't seem to work. I have tried simpler cases such as x = 0 and y = 0.   Any help appreciate.


I have new macbook pro and I format whole drive to one partition and restore my backup (time machine).  Now I have no "Recovery HD" partition. How can i create it?


Is a biometric passport required for layover in the USA?

I want to visit Canada, for which, according to my research, I do not require an electronic passport.  However, most flights have a layover in the USA. I know I need an electronic passport to enter the US, do I also need it for layover?


Proving that $\lim_{n\rightarrow \infty} \frac{n^k}{2^n}=0$

I need to prove that $$\lim_{n\rightarrow \infty} \frac{n^k}{2^n}=0$$ where $k\in \mathbb{N}$. All I can think of is to use something like L'Hopital's rule but I suppose there must be a another simpler way. I would much appreciate if someone could give me a hint. Thanks


Removing Hyper-V role from Windows Server 2012 R2

I am attempting to remove they Hyper-V role from a Windows Server 2012 R2 machine. When attempting to do so via the "Add Roles and Features Wizard", the check box is grayed out and it will not allow me to uncheck it and therefore will not allow me to uninstall this role.   This was a simple process in 2008 and 2008 R2. Not sure what has changed.


How do I sum up big integers that don't fit into unsigned long long? C++

I've created a program that sums up all possible individual sub-strings of given data. For example: 1 1 2 2 should return 30 because,  1 1 + 1 1 + 1 + 2 1 + 1 + 2 + 2 1 1 + 2 1 + 2 + 2 2 2 + 2 2   Sums up to 30, now the problem isn't creating such a program, the issue is when the big (10^15) numbers come in when there can be as many as 10^5 of them. Now my question is: How do I deal with such numbers? I can only use standard library, so no GMP for me unfortunately and I'm also forced to run on GCC 4.4.4 which makes it even worse.


I just dual installed Ubuntu 14.04 with Windows 7, using Wubi. It went pretty smoothly, but when my Ubuntu home screen came up and I opened the "Install Ubuntu 14.04.2 LTS" icon, this screen came up:    I have no idea what anything on this screen is for. I've search the web and I have found no information on what /dev/sda is, or what I am even supposed to be selecting. When I click "Install now", I get an error saying, "No root file system is defined. Please correct this from the partitioning menu."  Has anyone dealt with this screen before, who knows how to use it? Any insight would be greatly appreciated!


I tried solving the above question but was unable to prove it. I used Descartes rule of sign, factorisation techniques, and many other things but could not figure out the solution.


I have used biber succesfully, but now I have ran into a problem. My pdf files look like this: This citation is not working (eco_theory_1979).  When I typeset this tex file:  \documentclass[a4paper,12pt]{article} \usepackage{fontspec} \usepackage[norsk]{babel} \usepackage[style=apa,backend=biber]{biblatex} \DeclareLanguageMapping{norsk}{norsk-apa} %\addbibresource{test.bib} \bibliography{test}  \begin{document}  This citation is not working \parencite{eco_theory_1979}.  \printbibliography  \end{document}       Here is the bib file  @book{eco_theory_1979,     Address = {Bloomington, {IN}},     Author = {Eco, Umberto},     Date-Added = {2014-07-28 17:35:21 +0000},     Date-Modified = {2014-07-28 17:35:21 +0000},     Isbn = {0253202175, 9780253202178},     Publisher = {Indiana University Press},     Title = {A theory of semiotics},     Year = {1979}}   This is what the log file reports:  No file test.bbl. LaTeX Warning: Citation 'eco_theory_1979' on page 1 undefined on input line 13. LaTeX Warning: Empty bibliography on input line 15. LaTeX Warning: There were undefined references. Package biblatex Warning: Please (re)run Biber on the file: (biblatex)                test (biblatex)                and rerun LaTeX afterwards.   Previously I have compiled similar files without problems. There seem to be a problem that no bbl file is created. I am using TexPad on a Mac and have tried to compile in several ways (autodetect, bibtex...) I will be very happy if anyone can help


Given $\forall x,y>0$ Prove that $x^y+y^x\ge1$    I have tried weighted inequalities and Jensen's but unfortunately ended up no where. Please help me. (I know this is a basic inequality).


I felt that  question I had was in the grey area between SO and SoftwareEngineering.se and I ended up asking it on SoftwareEngineering.se (clearly), however someone there has said that it would be a better fit for SO. I would like suggestions as to where it should go, either comments, or upvote=leave it on SoftwareEngineering.se, downvote=move it to SO.


Sorting methods in class file by access modifiers is good or wrong habit?  Which are another methods for structure of class file?


so understanding what unimodal, bimodal & multimodal distributions mean was easy, but I wonder how strict should I be when I am applying the definitions to real data, in that sense, I need to ask, does the peak at 4  in the histogram below large enough to consider the distribution bimodal? if yes, is the other peak at 10 large enough to consider the curve actually multimodal?   I wonder if whenever I find a peak, no matter how small it is, should I consider it or if peaks at certain sizes can be too small and considered negligible.


PMI removal with LTOV <78% and decreased home value

I made a big payment to my loan to build equity and remove my PMI. Reading guidelines on consumerfinance.gov and it states -   "If the value of your home has decreased below the original value, you may not be able to cancel PMI at this time. "  Currently my LTOV is 74%. So hypothetically if the home price decreased by about 5000, my LTV would still be less than 78%  I was wondering if I am still eligible to remove PMI? I talked with my lender and they say I need an appraisal, so just want to make sure I am not wasting my money if there is strict clause for home value depreciation and so rather refinance my loan to remove PMI.


JKWhy is my brisket rubbery when I cooked it

Injected, cooked until 160, wrapped, cooked until 200, just like it says online. Still very rubbery and tough.  Maybe my meat thermometer is inaccurate? Maybe I should go beyond 200 next time.  It was a very small brisket, about 4.5 pounds.


I'm confused about who can use scrolls in 5e. In the DMG, p139 under Magic Item Categories: Scrolls, it states that:     Any creature that can understand a written language can read the   arcane script on a scroll and attempt to activate it.   This implies that anyone can try to cast a spell using a scroll. However, on p.200 in the Spell Scroll entry it states that:     If the spell is on your class's spell list, you can use an action to read the scroll and cast its spell without having to provide any of the spell's components. Otherwise, the scroll is unintelligible.   Then there is the bit about a DC 10 + scroll spell level ability check if the spell is higher than a spell slot that you can cast.     If the spell is on your class's spell list but of a higher level than you can normally cast, you must make an ability check using your spellcasting ability to determine whether you cast it successfully. The DC equals 10 + spell's level. On a failed check, the spell disappears from the scroll with no other effect.    So, which is it? Can anyone who can read a language use a scroll (like a fighter) if they make an arcana check, or just a PC with that specific spell in their spell list (only spell casters)?


Identify a near-future book with automated news filters and floating countries

I'm trying to track down a book I read at some point in the late '90s (or possibly the early 2000's).  It's a near-future novel, but there's only two things I remember from it.  1) Global society and the Internet (it might have been BBS/email-style rather than web-style) had reached the point where most people had their filters set up so that they only saw things which supported the viewpoints they already held.  The (A?) main character had deliberately configured her filter to occasionally present her with something new or conflicting, just so she didn't get locked into one viewpoint.  2) Due to sea-level rise, there was a floating nation in the Indian Ocean.  I forget if it was literally made of rafts/scraps tied together, or (more likely) a collection of separate boats that stayed together.  I also forget if it was formally a country or not, but it had a large population and was a significant factor in world politics.  Does this ring a bell for anyone?


What exactly makes a force conservative?

I get that forces can be classified as either conservative or non-conservative, depending on whether the work done in a round trip is zero or non-zero.  What property of the force makes it to be, conservative or non-conservative, so that the work done in a round trip is zero/non-zero?  Note: I'm not asking the conditions for a force to be . I'm asking what exactly makes it conservative.


Show that $f(x)=ax+b$ for all $x\in \mathbb{R}$ where $a,b \in \mathbb{R}$

Let $f:\mathbb{R} \to \mathbb{R}$ be a continuously differentiable function. Show that if $f$ satisfies: $\frac{1}{2y} \int_{x-y}^{x+y}f(t)dt=f(x)$ for all $x\in \mathbb{R},y>0$ then there exists $a,b \in \mathbb{R}$ such that $f(x)=ax+b$ for all $x\in \mathbb{R}$ Attempt: Differentiating w.r.t $x$ on the given equation we get $\frac{f(x+y) - f(x-y)}{2y} = f'(x)$, i.e $f(x+y) - f(x-y) = 2f'(x)y$, Differentiating w.r.t $y$ we get $f'(x+y) + f'(x-y) = 2f'(x)$. Since $f'$ is differentiable, Again differentiating w.r.t $y$ we have  $\ \ f''(x+y) - f''(x-y) = 0 \implies f''(x+y) = f''(x-y)$ from here we can conclude that $f''$ is constant. But after integrating I think I might get a second degree polynomial. So I'm stuck here, Help me out. Any hints would be appreciated.


Does $(s_{n+1}-s_n)\overset{n\to\infty}{\longrightarrow}0$ in $\mathbb R$ imply that $(s_n)$ converges?

Given a sequence $(s_n)$ in $\mathbb R$ such that $$\lim \limits_{n \to \infty}( s_{n+1}-s_n)=0,$$  I am asked to prove  $(s_n)$ converges.   I know all Cauchy sequences converge in $\mathbb R^k$. So I want to prove that $(s_n)$ is Cauchy.   I am stuck as to how to show the given sequence is a Cauchy. Thank you.


Is this sentence structure correct ?      A society so vibrant and diverse as America’s is bound to dominate.   My basic confusion is that whether to put ’s at the end of the subject or not.   Another example:     A personality so mannered and educated as John’s always has a bright future.


Why wasn't Iron Man's armor a weak point in Age of Ultron?

In Avengers: Age of Ultron movie,      Ultron infected tech of Avengers Tower just after his birth. It means he is capable of infecting tech. Also, if this wasn't the case, he could never be able to create his drones.   Just after its birth,      He escaped using the Internet and infected digital devices across the entire planet. Again, awesome capability (think Skynet).   We also saw that      Iron Man's armor was connected to the Internet. He googled for the keyword "Hulk" during flight just before he deployed Veronica.   Then, why did Ultron let Iron Man win the fight? Why didn't he simply hack Iron Man's armor to use him as own drone?


If $A$ is an $n$-by-$n$ matrix with characteristic polynomial $(-1)^nt^n+b_{n-1}t^{n-1}+\cdots+b_1t+b_0$, show that $tr(A)=(-1)^{n-1}b_{n-1}$

Let $A$ be an $nxn$ matrix with characteristic polynomial    $$f(t)=(-1)^nt^n+b_{n-1}t^{n-1}+\cdots+b_1t+b_0$$      Show that $tr(A)=(-1)^{n-1}b_{n-1}$   I think I should be able to get this from the characteristic polynomial given however I don't know where to start.  My thinking is to start by trying to replace $f(t)$ with $det(A-\lambda I)$ and attempting to work backwards to get to A, and then solve for trace.  My other thought is to use the Pattern Method to try and get $f(t)$


Disproving the statement "If $f(z)$ is not an entire function, then $g(z) = f^2(z)$ is not entire.”

If $f(z)$ is not an entire function, then $g(z) = (f(z))^2$ cannot be an entire function.”  From this statement why would saying "Let $f(z) = \sqrt z$, assuming that it is a branch that takes $−1$ to $i$. Then it is not analytic on the branch cut, but $g(z) = (f(z))^2 = z$ is obviously an entire function." Not be a proper example to disprove this statement/ be a incorrect counterexample? I understand that for $\sqrt z$ to be a incorrect counterexample means it is not analytic on the branch -1 to I, therefore not entire. However I thought $\sqrt z$ would be analytic throughout the whole branch cut from -1 to i. Since on the complex plane, $\lim_{z \to -1} \sqrt z$ exists as it would approach $i$ in that case, and in the other case $\lim_{z \to i} \sqrt z$ it approaches $\sqrt i$ meaning that at least on that branch cut in the complex plane it is continuous everywhere, therefore the partial derivatives exist everywhere on the branch cut meaning it is analytic, but this assumption seems to be incorrect. What am I missing or not understanding here. Precisely, I don't understand why $\sqrt z$ would not be a proper counterexample to the statement.


Is it possible to take input variables in shell?

For example, if I ran:  $ sh somescript inputvariable   if so, how would I use this variable in the script?  For example   $ sh somescript 7


How can we show that $\pm 1, \pm i$ are the only units in the ring of Gaussian integers, $\mathbb Z[i]$?  Thank you.


How do I embed a vimeo video into the body field. The iframe is being removed in my input format. How do I add it?


public class LocalVariables {      static public void main(String args[]){          int var;          if(args.length > 0){             var = 10;          }          else{             var = 20;         }         System.out.println(var);     }  }   Here if I remove else part it's showing compilation error as:  Exception in thread "main" java.lang.Error: Unresolved compilation problem:  The local variable var may not have been initialized   Explain how the local variable value is initialized if I use else part.


How to assign value to variable and print it

So far I managed to create a variable which stores the string and replaced blank with _ and : with @ title=$(youtube-dl --get-title https://www.youtube.com/watch?v=8b1JEDvenQU) echo  "${title}" echo  "${title}" | sed 's/ /_/g;s/:/@/g'   XGBoost Part 2: Classification XGBoost_Part_2@_Classification   I want to assign mod_title -> ${title}" | sed 's/ /_/g;s/:/@/g' and use this variable to use inside a function but I am not able to assign and print it. This is what I have tried: title=$(youtube-dl --get-title https://www.youtube.com/watch?v=8b1JEDvenQU) mod_title = "${title}" | sed 's/ /_/g;s/:/@/g' echo "${mod_title}"   error: b.sh: line 2: mod_title: command not found  I am new to bash scripting. So no idea how to do it.


How to deal with time series which change in seasonality or other patterns?

Background I'm working on a time series data set of energy meter readings. The length of the series varies by meter - for some I have several years, others only a few months, etc. Many display significant seasonality, and often multiple layers - within the day, week, or year. One of the things I've been working on is clustering of these time series. My work is academic for the moment, and while I'm doing other analysis of the data as well, I have a specific goal to carry out some clustering. I did some initial work where I calculated various features (percentage used on weekends vs. weekday, percentage used in different time blocks, etc.). I then moved on to looking at using Dynamic Time Warping (DTW) to obtain the distance between different series, and clustering based on the difference values, and I've found several papers related to this. Question Will the seasonality in a specific series changing cause my clustering to be incorrect? And if so, how do I deal with it? My concern is that the distances obtained by DTW could be misleading in the cases where the pattern in a time series has changed. This could lead to incorrect clustering. In case the above is unclear, consider these examples: Example 1 A meter has low readings from midnight until 8AM, the readings then increase sharply for the next hour and stay high from 9AM until 5PM, then decrease sharply over the next hour and then stay low from 6PM until midnight. The meter continues this pattern consistently every day for several months, but then changes to a pattern where readings simply stay at a consistent level throughout the day. Example 2 A meter shows approximately the same amount of energy being consumed each month. After several years, it changes to a pattern where energy usage is higher during the summer months before returning to the usual amount. Possible Directions  I've wondered whether I can continue to compare whole time series, but split them and consider them as a separate series if the pattern changes considerably. However, to do this I'd need to be able to detect such changes. Also, I just don't know if this is a suitable way or working with the data. I've also considered splitting the data and considering it as many separate time series. For instance, I could consider every day/meter combination as a separate series. However, I'd then need to do similarly if I wanted to consider the weekly/monthly/yearly patterns. I think this would work, but it's potentially quite onerous and I'd hate to go down this path if there's a better way that I'm missing.  Further Notes These are things that have come up in comments, or things I've thought of due to comments, which might be relevant. I'm putting them here so people don't have to read through everything to get relevant information.  I'm working in Python, but have rpy for those places where R is more suitable. I'm not necessarily looking for a Python answer though - if someone has a practical answer of what should be done I'm happy to figure out implementation details myself. I have a lot of working "rough draft" code - I've done some DTW runs, I've done a couple of different types of clustering, etc. I think I largely understand the direction I'm taking, and what I'm really looking for is related to how I process my data before finding distances, running clustering, etc. Given this, I suspect the answer would be the same whether the distances between series are calculated via DTW or a simpler Euclidean Distance (ED). I have found these papers especially informative on time series and DTW and they may be helpful if some background is needed to the topic area:


I accidentally pressed Ctrl+Alt+F12 and my display turned to black... I then had to make a reboot.. What did it do to my system? Also what does Alt+ F8 to F10 do?


I asked this question for many people/professors without getting a sufficient answer, why in QM Lebesgue spaces of second degree are assumed to be the one that corresponds to the Hilbert vector space of state functions, from where this arises? and why 2-order space that assumes the following inner product:  $\langle\phi|\psi\rangle =\int\phi^{*}\psi\,dx$  While there is many ways to define the inner product.  In Physics books, this always assumed as given, never explains it, also I tried to read some abstract math books on this things, and found some concepts like "Metric weight" that will be minimized in such spaces, even so I don't really understand what is behind that, so why $L_2$? what special about them? Who and how physicists understood that those are the one we need to use?


I read a book once where an agent of a futuristic multi-planet government was sent on a mission, and in doing so, used a machine to impress copies of his mind on other people to send them. I remember no names, of people or locations, but I can describe what I do remember. The place the copies of this man were sent was a planetary system that was used as a prison. The planets were used as a prison because of a unique type of bacteria or virus that lived there. Whenever that bacteria would go too far from the planet, it'd die, and take any organism that it was inside with it. There were 4 planets in the system, and copies of this man were sent to each one. Each planet granted the copy one "power", unique to the planet, through the bacterium.  In one world the bacteria would break down everything man-made remarkably quick, but some people could control them enough to stop, and even create things for you. Another gave people the ability to swap minds during sleep, waaking up into a different body altogether. A third gave the man "adaptive DNA", so to speak. He subconsciously would change his DNA to match the environment, which could've meant a sex change, if he lived in an all-male environment. And sadly, I dont remember the 4th well at all. I just know someone became a dragon at some point, and that someone was blind.  Anyway, I read this book at my high school library. That copy was a plain brown cover, no title or anything, and although the name was inside, I have forgotten it. I have forgotten it and the author and  all the unique names to search for, and all my searching for the things in this description have yielded nothing. If anyone knows this book, please tell me its name, or anything that could lead to me finding this book again.


How can you install Oracle Java JDK 7 without an internet connection with noob friendly instructions?

Is there any way that you can easily and I mean easily install Oracle Java JDK 7 in ubuntu with absolutely no internet connection. I'm asking because I am completely new to things(noob and newb) like this in Ubuntu. I have access to a Windows OS based computer that has internet but not at home which is the computer that has Ubuntu installed so I can download the needed files/materials to install and later bring them to my computer at home to install. I would like it if somewhere there were instructions that give every detail(even such as what application to open exactly what directory and how to access the directory etc...) to what must be done to get Oracle Java JDK 7 installed. Thanks in advance.


I am looking for the derivation of Ohm's Law, i.e., $V$ is directly proportional to $I$. Can someone help me with it?


Samsung Keyboard of keybinding of switching input methods

How do I disable the 'Shift + Space' keybinding of Samsung Keyboard, which triggers the toggling of input methods? I use a physical keyboard, and it is quite easy (and annoying) for my system to misinterprete my ' Capital letter followed by a space' into switching the input methods.  Also I don't want to root my device.


MySQL - SELECT Columns from results of another Query

I'm trying to use a dynamic range of columns fetched from another query, specifically I want the results of this query:   SELECT COLUMN_NAME as DYNAMIC_COLUMN FROM information_schema.columns  WHERE table_name='TheTableName' AND column_name like 'TheColumnName%'   As columns for the SELECT statement of this query:  SELECT TheColumnResults FROM AnotherTable   My (wrong) approach is something like this:  SELECT( SELECT COLUMN_NAME as DYNAMIC_COLUMN FROM information_schema.columns  WHERE table_name='TheTableName' AND column_name like 'TheColumnName%' ) AS TheColumnResults SELECT TheColumnResults FROM AnotherTable   I just need a guidance on how to approach this or even if it's possible to set a dynamic range of columns at the SELECT statement.  Other (failed) approach I've used:  SELECT * FROM DATABASE.AnotherTable INNER JOIN information_schema.columns  WHERE Exists (SELECT COLUMN_NAME AS DYNAMIC_COLUMN FROM information_schema.columns  WHERE table_name='TheTableName' AND column_name like 'TheColumnName%' AND TABLE_SCHEMA = 'DATABASE')


Suppose $G$ is the set of functions of the form $f(x) = ax+b$, where $a$ and $b$ are real numbers and $a \ne 0$. Let $*$ denote the operation of composition of functions, $(f * g)(x) = f(g(x))$.  For this question I know have to prove associativity, closure and whatnot. However what I am confused about is what is $g(x)$ in this case. I havent had to prove composition of functions before.


Can a matrix in $\mathbb{R}$ have a minimal polynomial that has coefficients in $\mathbb{C}$?

Like the title says, can a matrix in $\mathbb{R}$ have a minimal polynomial that has coefficients in $\mathbb{C}$?  I have a feeling the answer is yes because the characteristic polynomial can have coefficients in $\mathbb{C}$ and so I don't see any reason why not, I was merely asking in case there was some sneaky proof that proves that this cannot happen.


How to turn on and off some parts of a TeX file?

I would simply like to have the possibility to turn on and off some parts of a TeX file. For example, when writing a course assignment, it should be possible to hide the solutions to my students, but to show them to me after a new compilation. Hint: The comment package does not work for me, since it does not understand German Umlaute like, e.g., Ä, Ö, Ü, etc. In general, this package seems to be a little bit out of date...


How to /give tipped arrows in Windows-10 edition

I am trying to make a feature in my survival minigame where every once and a while a random player is teleported to a hidden room via command blocks. Inside, players will be allowed to hit one button, then be teleported back to the main arena. Each button gives you different items, and one I want to have is to have it give you tipped arrows (like harming potion arrows). But, my command isn't working. Here is what I got:  /give @p arrow 1 0 {Potion:"harming"}  I found the last part . What is wrong with the command? As I said, I am on Windows-10 version (v1.1.0).


Non-featured posts displayed as such in the app feed

I have the idea that non-featured meta posts are displayed as if they are in the app feed.   Or does featured mean something else here?


returns array's memory address and not the value

public int[][] updateGame(String[] inarr, int c) {    int[][] userGuess = new int[10][4];    for (int i = 0; i < c; i++) {     for (int j = 0; j <= 3; j++) {       userGuess[i][j] = Integer.parseInt(inarr[j]);         System.out.println("user guess in for loop: " + userGuess[i][j]);        //return userGuess[i][j];     }    }    //System.out.println("user guess in method:"+userGuess);    return userGuess;  }   it only returns the address of array


Reputation discrepancy between user drop down and user page

I had and answer unaccept today and received -15 rep for that. This is included in the total reputation and my reputation on the user page (200 for the day is correct) but in the user drop down at the top of the page it's not included (it shows 215 for the day). The unaccept happened a few hours ago so it doesn't seem to be a matter of waiting for refresh.


Best multivariable calculus text for physics

I will soon start studying electrodynamics from Griffith's Electrodynamics. I tried to learn the math required from the first chapter but found that I couldn't understand it very well. So are there some good textbooks for learning multivariable calculus?


Javascript - Get array length from multi dimensional array

How can you get the length of this kind of array using javascript or jquery?  var Accounts = { 'Account001' : { 'data1' : 'foo1', 'data2' : 'bar1' }, 'Account002' : { 'data1' : 'foo2', 'data2' : 'bar2' }, 'Account003' : { 'data1' : 'foo3', 'data2' : 'bar3' }, 'Account004' : { 'data1' : 'foo4', 'data2' : 'bar4' } };   I tried Accounts.length but it seems to return NAN.


I need to run a bash script at boot-time as superuser in Xubuntu. I don't know where to start. I have to do something described in a Arch Linux guide. That guide says exactly:     Add following at the end of the file : /etc/rc.sysinit   # Do my action /etc/rc.d/do_my_action  /bin/dmesg >| /var/log/dmesg.log   But I do not have /etc/rc.sysinit and /etc/rc.d/ in Xubuntu. I'm sure there are equivalent ones, right?


Prove by Induction that: $$(n+1)(n+2)(n+3)(n+4)(n+5)$$ is divisible by 120. I tried to solve it, but could do so only till the inductive step. I assumed: $$p(k)=(k+1)(k+2)(k+3)(k+4)(k+5), and $$ $$p(k+1)=(k+2)(k+3)...(k+6)$$ Then, I distributed it as: $$p(k+1)=(k+2)(k+3)...(k+5)(k+1+5) \\=(k+1)(k+2)...(k+5)+5(k+2)(k+3)...(k+5)\\=p(k)+5(k+2)(k+3)...(k+5).$$ I got stuck over here. Am I right till here? Can someone tell what to do next?


Column Formatting to Show a Hyperlink or just Text Based on 3rd Field

PrimaryLink is to display a hyperlink based on the other 2 fields  PrimaryName PrimaryURL PrimaryLink   JSON for Column Formatting  {    "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",    "elmType": "a",    "txtContent": "[$PrimaryName]",    "attributes": {    "target": "_blank",    "href": "[$PrimaryURL]"     } }   So if I enter a PrimaryName and a PrimaryURL, it would display the PrimaryName as a hyperlink in PrimaryLink to what was set in PrimaryURL.  If I only put a PrimaryName in, it still displays a hyperlink that goes to the /list/AllItems.aspx  Is there a way where if I don't populate PrimaryURL, that it can only display PrimaryName text and no hyperlink?  Tried this from a post recommended in comments, but it leaves the whole column empty.    {   "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",   "elmType": "a",   "txtContent": "[$PrimaryName]",   "attributes": {     "target": "_blank",     "href": "[$PrimaryURL]"   }     "style":{         "display": "=if([$PrimaryURL]!='', 'block', 'none !important')"     } }


I'm new to physics and I was wondering if time loops (like those seen in the movies Groundhog Day or Edge of Tomorrow) possible?


Can a meromorphic function have removable singularities?

Authors usually give the following definition (or some variation) of meromorphic function:     Let $G$ be a region (i.e. open connected subset of $\mathbb{C}$). A   function $f$ is said to be meromorphic in $G$ if it's holomorphic in   $G$ except in a discrete set of poles.   However I think we should also consider removable singularities in the definition of meromorphic function. There is a theorem that says:     If $f$ and $g$ are holomorphic in $G$ then $f/g$ is meromorphic in $G$.   This theorem is no longer true if we take the usual definition. Take for example $f,g:\mathbb{C}\to \mathbb{C}, f(z)=g(z)=z$ and define $h:\mathbb{C}-\{0\}\to\mathbb{C}, h(z)=f(z)/g(z)$. Then $h=1$ in $\mathbb{C}-\{0\}$, however $h$ is not meromorphic in $\mathbb{C}$ in the sense of the previous definition because $0$ is not a pole, is a removable singularity.  Most authors only mention poles in the definition of meromorphic functions, but I think that's not strictly correct. If I'm right, I would like to see an author considering removable singularities in the definition of meromorphic functions.  There is a similar question here  but I don't like the phrasing of the question and the answer.  I would like to have a reference text considering these details. For example Lang, Conway and Ahlfors all give the definition without removable singularities.


DNS is deleted from the resolv.conf file on Ubuntu

When restarting Ubuntu the static DNS configuration in /etc/resolv.confdisappears.  See this


Consider the following:  Let's say I have a dot. I would like to be able to position this dot anywhere on the page: at the corner, in the middle, anywhere.  So far, despite poring over manuals and experimenting, I can not figure out how to do this. It seems logical that there would be some system that would place a conceptual grid on the page and then allow for an exact placement within that grid.  I'm sure it exists, but I can't seem to find it.  I can make the dot, and all sorts of other shapes, but I just don't seem to have any control over where these shapes appear on the page.  I'm sure this is an obvious question and I have overlooked something.


I am trying to refer to a line of text in my document using \label and \ref options in latex, but it doesn't seem to work.  \bigskip \mhead{Publications} {Paper published in xyz journal, 2016. \label{myposter}}  %... %after two pages %...  \begin{itemize} \item[•]See poster~\ref{myposter}. \end{itemize}


How to abort a thread in a fast and clean way in java?

Here is my problem: I've got a dialog with some parameters that the user can change (via a spinner for example). Each time one of these parameters is changed, I launch a thread to update a 3D view according to the new parameter value.  If the user changes another value (or the same value again by clicking many times on the spinner arrow) while the first thread is working, I would like to abort the first thread (and the update of the 3D view) and launch a new one with the latest parameter value.  How can I do something like that?  PS: There is no loop in the run() method of my thread, so checking for a flag is not an option: the thread updating the 3D view basically only calls a single method that is very long to execute. I can't add any flag in this method asking to abort either as I do not have access to its code.


root partition disk is full, how to clear it?

I have a brand new System76 laptop w/15.04, 250G SSD as root partition. I was playing around with pycharm, doing a tutorial when i get a pop-up saying no disk space remaining. I close out of pycharm and open file manager, sure enough, my ssd is full. I've rebooted, but still have my root part full.  How do i find out whats filling it up and clear it out??  UPDATE: I used a 'du -k / | sort -n' to find the largest files being used on the disk, then deleted them.


Is it allowed to have multiple hyphens in one word? I want to use the word semi-self-sustaining in the sentence     However, the ability to produce semi-self-sustaining stations is   possessed by up to a quarter of all nations.   Should we use semi-selfsustaining or avoid it by using partially self-sustaining?


Pixel 3A Android 10 Assistant auto comes on and stops gesture, unable to reset connected devices

I have a brand new Pixel 3A with the recently updated Android 10 update.  Google Assistant has been activated while in my laptop bag.  I'm assuming this is because of the incessant urgings that Google displays on screen, and of course the new android doesn't swictch the screen off when you hit the power button, it leaves an 'awake' screen that can respond. Well, however it happened, Assistant is enabled and it is causing a number of problems, and I can't switch it off.   The main issues are:   Assistant repeats continuously on the arcane workings of the system. Voice messages like 'Checking WebAPP for updates' 'Downlaoding update' '10% downloaded, etc' Assistant stops the phone Whenever any event status changes Examples of this are 'Home screen 1of 2, double tap to enable' etc., etc., etc totally take over the user interface. The UI is now a triple tap pause system. To do anything, you tap an icon and wait for it to be highlighted (at which point a stream of help instructions are played back) then double tap to activate. This happens for each and every tap including back buttons, home buttons, whatever.The system is now an incredibly slow, novice system. The gesture system is disabled. This is the real killer. Without the gesture system you are locked into only what is visible. You cant get into the app drawer, for instance. And you can't get beyond the displayed items in the settings screens.   My Problem is:  The instructions to switch off assistant are as follows:   Open the google app Tap the compass at the bottom right Tap the profile button top right Tap the Assistant Scroll down to the Assistant devices,Devices section and switch off.  BUT gestures and scrolling are disabled   You can see to the Face Match setting, but connected devices is somewhere way, way down below that. And one can't get there. Not for love nor money.  Under Android 9, I could deactivate with a voice command.  That seems to be gone.  Is my only solution to do a factory re-set?  Anyone out there with a solution for me?


What is the use of:   2>    in an SSH command?


I brought an iPhone but now think it's stolen, what can I do?

I bought an iPhone off a lady which by now I thank was a stolen phone:   I tried to activate the phone I got right through to wifi settings  Now I'm stuck on iCloud settings and asked for pervious Apple ID    There is a number displayed to call in case the phone is found, but that number is not active.  What can I do now?


I have this URL: http://localhost:1356/MyProfile/Login.aspx  I want to redirect this to http://localhost:1356 How to with javascript?


siunitx: Abbreviations are not printed with mathtools, fontspec and unicode-math

This code can print \si{\us}  \RequirePackage{luatex85} \documentclass[border=1cm]{standalone} \usepackage{siunitx}  \begin{document} Time \si{\us} \end{document}     while this one doesn't print the desired output  \RequirePackage{luatex85} \documentclass[border=1cm]{standalone} \usepackage{mathtools} \usepackage[tuenc,no-math]{fontspec} \usepackage{unicode-math} \usepackage{siunitx}  \begin{document} Time \si{\us} \end{document}     So, what packages are responsible for such a flaw? Additionally, in what order should I load them?


How to use sed command to modify a file's entry line by line in shell script?

This is my file1:    #$BQ #{ VOL       @home    } #database    daba #relation    tcdeatid #copy           1 #{ version        0 } #opendb #clear #.lruno := 72 #.infno := 1 #.tid.noel := 101 #.tid.info := 64 #.tid.setnr := 1225              <--- (1225 number will be changed) #.typeidm := 1 #.sourcetable := 2 #writedb      #clear #.lruno := 72 #.infno := 205 #.tid.noel := 101 #.tid.info := 76 #.tid.setnr := 5625              <--- (5625 number will be changed) #.typeidm := 1 #.sourcetable := 2 #writedb #$EOJ  In file2, I have the correct entries:    #.tid.info := 3345              <--- (I want to put this number in file1 in place of 64) #.tid.setnr := 1254              <--- (I want to put this number in file1 in place of 1225) #.tid.info := 5567              <--- (I want to put this number in file1 in place of 76) #.tid.setnr := 9056              <--- (I want to put this number in file1 in place of 5625)   I want to make changes in file1, directed by data from file2.  I have tried sed "s/tid.setnr := 1225/tid.setnr := 1254/g" file1 > modified_file1  But instead of doing it manually, I want my script to read the new tid.info and tid.setnr values from file2 and modify the respective lines in file1.  The first line in file2 should replace the entire first line in file1 that contains tid.info, the second line in file2 should replace the second line in file1 that contains tid.setnr, and so on.


What type of pronoun shoould I use before a gerund?

While reviewing grammar, I came upon this sentence: "I was able to inspect the apartment without his noticing the movement of my eyes." However, this phrasing seems awkward, especially the "his". I feel like one of the following two changes would be more grammatical:  I was able to inspect the apartment without him noticing the movement of my eyes. I was able to inspect the apartment without his noticing of the movement of my eyes.  Are either of these two more "correct"? Or are there any other better changes?


How do I rig each blade to fan out like an aperture lens?

I'm new to blender so I've got loads to learn. My problem at the moment is that I want to rig up each individual triangle, so that I can get it to fan out like a camera aperture. Can anyone help me achieve this?


Suppose there are two observers $A$ & $B$ both are in motion, now $A$ sees $B$ is moving with speed $'u'$. A says that another object $'d'$ is moving with speed $c+u$ w.r.t. A in the same direction as $B$. What stops him from saying this ?  The formula $\frac {u+v}{1+\frac{uv}{c^2}}$ is such that $'v'$ is speed of the object $'d'$ w.r.t.$ B$ and not $A.$ and $u$ is the speed of $B$ w.r.t. $A$, now even though $B$ also sees that the object $'d'$ moves faster than the speed of light. He can still always see light to travel with the speed of light and also he can be an inertial observer?  What is the problem here?


template in templated function not parsed as template but as comparison

I have this trivial function templated on Scalar type which in turn uses Eigen templates.  #include<Eigen/Core>  template<typename Scalar> void somefunc(){     Eigen::Matrix<Scalar,9,1> v;     v.segment<3>(3).setZero(); }   When compiling with g++ -I/usr/include/eigen3 ex.cc, I get  a.cc: In function ‘void somefunc()’: a.cc:6:18: error: request for member ‘setZero’ in ‘3’, which is of non-class type ‘int’   v.segment<3>(3).setZero();                   ^~~~~~~   meaning the code was parsed as v.segment [smaller-than] 3 [greater-than] (3).setZero() and not as template argument. I tried adding typename in front of Eigen::Matrix but it does not change anything.   What's wrong? I must be overlooking something obvious.


Journey Builder: Error binding data bound member

I created a Journey Builder Interaction and turned it on to TEST mode.  The Event Source for the interaction is a sendable Data Extension which is updated (via the API) every time someone new signs up through our website.  Contacts who do not already exist in 'All Subscribers' fail to enter the Journey Builder Interaction, and this is the error thrown:  Failed - ExactTarget.InteractionStudio.Activities.AllowMultipleDecision.ContactKey: Error binding data bound member.   Question #1: Does a contact have to exist in All Subscribers to be accepted into an interaction?  Question #2: How can I add contacts to All Subscribers when they first flow through Journey Builder?


How to display Excel Spreadsheet in Unity?

I need to display Excel Spreadsheet inside of Unity with edit and read feature. This is a PDF file image but Excel file displays like this:


A book by the name of  teaches the following method for differentiating $x^2$ with respect to $x$: Take the equation: $$y=x^2$$ The author reasons that increasing both $x$ and $y$ by a differential amount preserves equality, so: $$y+dy=(x+dx)^2$$ Expanding the right-hand side gives: $$y+dy=x^2+2xdx+dx^2$$ Subtract off the original $y=x^2$: $$dy=2xdx+dx^2$$ The author reasons that an infinitesimal change in $x$ multiplied by an infinitesimal change in $x$ is so small to be effectively zero, so any powers of $dx$ higher than $1$ are dropped: $$dy=2xdx$$ Then, dividing both sides by $dx$: $${dy \over dx}=2x$$ This is nothing like the methods I've been taught for finding a derivative (which I understand to be the limit of the difference quotient), but it at least appears to work for polynomial functions. Is this a valid method that I'm not aware of? If so, how would you use this to differentiate more complex functions like sine and cosine?


I'd like to know if my program could make a race condition or not? If so, please give me an example, because I can't see anyone.   #define STRING_SIZE 1024 char *string;  int main(int argc,char**argv){  int length;   if(argc != 2) return ;  length = strlen(string);  strncpy(string+length,argv[1],STRING_SIZE,STRING_SIZE-length); return 0;  }   what if i make a lock ? does this correct the problem ?   #define STRING_SIZE 1024 int lock; char *string;  int main(int argc,char**argv){  int length;   while(lock != 0){}  lock = 1;  if(argc != 2) return ;  length = strlen(string);  strncpy(string+length,argv[1],STRING_SIZE,STRING_SIZE-length);  lock = 0;  return 0; }


Can one attack for damage after having grappled an opponent?

The grappling rules sure are... light. Supposing one has an Extra Attack:   Assuming one has successfully grappled an opponent with one's first attack, can one then perform a normal attack action with one's Extra Attack? Against the grappled opponent or any opponent within reach? Limitations on weapons (e.g. one-handed only)? Assuming one has successfully grappled an opponent with one's first attack, can one's grappled opponent (now with move 0) perform a normal attack action? Against you or against any one in reach? Do advantage and disadvantage (along the lines of restraint) come into play? Are there grappling-specific attacks for damage (e.g. choke-hold)?


installing ubuntu 14.04 in win 7 lost partition

today i installed ubuntu 14.04LTS on windows 7 then in ubuntu , win 7 partition didnt appear. it shows whole drive  3.1gb used and 147. gb free how to recover win 7 partition and uninstall ubuntu and win 7 back


i'm having troubles to try to form a regex to make a match from a string to get the email only, the string would be like this: 'Hello we have sent an email to ***foo@hotmail.com check it"  I would like a match that only returns ***foor@hotmail.com and i have tried this with a being the string:  a.match(/\b(?=\w*[@*.])\w+\b/g) //expected ***foor@hotmail.com   But this only return [foo][hotmail] not even the .com.  Can you help me?  Thank you in advance!


This problem was posted before, but not the proof (because the asker knowed the answer), only a counterexample without the hypothesis of finite fibres.  I want to know how to prove this proposition:  Let $q:X\to Y$ and $r:Y\to Z$ be covering maps. Let's suppose that for each $z\in Z$ , the set $ r^{-1}(z)$ is finite, then the composition $p = r\circ q$ is also a covering map. Well I have to consider $z\in Z$ and show that there exist a neighborhood that is evenly covered by $p$, I know that there exist a neighborhood $U$ that is evenly covered by $r$, I think that this will be the desired neighborhood. First of all $ r^{-1}(U) = \cup_{i=1}^{n}  V_i $ (it's easy to see that the unions is finite using the fact that the fibres are finite and this is a local homeomorphism between the $V_i$) Then $ p^{-1}(U)=q^{-1} (r^{-1}(U) ) = q^{-1}(\cup_{i=1}^{n}  V_i)=\cup_{i=1}^{n}  q^{-1}(V_i) $ With $ q^{-1}(V_i) \cong V_i$ under $q$ and so $\cong$ U under $p$ I never used the fact that the preimage is finite, so my proof is obviously not correct, please help me with this


Existence of injection or surjection between two given sets

I'd like to know why, given two sets $X$ and $Y$, there always exists an injection from $X$ to $Y$ or a surjection from $X$ to $Y$. In other words, why we can always compare the cardinality of two sets.  I appreciate any help!


Almost in all texts which are discussing theorems of statistical learning, they assume analyzing arbitrary unknown distribution (the worst case). But in practice different problems (different data) have different levels of hardness, for example linear separable data is easier to learn than the data that are less (or not) separable by hyperplanes.  Are there any works on formalizing the hardness of data (similar to the stuff done in complexity theory)  Note: I am not sure if the same as analyzing VC-dimension or not, but I think it is not.


When would it be incorrect to use the past tense instead of present perfect

I am learning english, an I am wondering if I would be "correct" in using only the past tense and never using the present perfect tense. I might be over-simplifying the english grammar ...   So, are there some situations where it would be incorrect using the past tense instead of present pefect ?  (the following link gives some axample where past tense shall be used instead of present perfect, but no example where present perfect shall be used instead of past tense: )  Many thanks for your replies, Thierry


Information about moderators in the data dump

I was trying to look for information about the moderators of Stack Exchange Community, but I didn't find any. So can anyone please tell if there is any information available about the moderators in the data dump?  If not, how else can I download the data about it? I found some online sources like . But I want to download the data on my laptop.


How to detach deleted folder from quick access

I have a link to a deleted folder in "quick access" (frequent folders). However, I cannot remove it, because when I try to "unpin" it I get an error "Location is not available".  Somewhat related to "", but with no applicable answer.


I have a circuit that has the emitter side of a NPN tied to the emitter side of PNP. I need to find the output voltage on the emitter. Base voltage is a sine wave. Can someone help me understand what this kind of configuration is used for? And how should I go about to calculate the power dissipated by the resistor?


Invalid Certificate on *.stackoverflow.com

When trying to browse  I receive an error that the certificate is not valid. The reason is that *.stackoverflow.com comes with a certificate for *.stackexchange.com at the moment.    More details:   SHA-1 fingerprint of the cert:      DD:BE:B5:C8:5C:F8:40:66:23:AE:1D:93:6B:FE:91:7D:B6:59:CA:54   Issued by: DigiCert High Assurance CA-3


How many positive integers $\le 1260$ are relatively prime to $1260$?

I have no idea how to solve this problem.  Is there a general formula to compute the quantity of such numbers?


I can't remove the write-protection from a USB Drive

I know this is a duplicate question, maybe triple duplicate or more, but I really cannot find a solution for this. My USB Drive wasn't write protected before, but something happened to it and now I cannot write to or format it.  I have tried in ubuntu to change the permissions, fsck, fdisk, dmesg | tail, mkfs -t vfat, hdparm -r0 and nothing works; all I get is Permission Denied. I tried from GParted but it also says it's read only. I have also tried using Windows to change permissions, setting attributes disk clear readonly, renaming the key in the registry, and tried a low level format.  But truly nothing works. Also, the stick doesn't have any hardware pin or switch for write protection.  Is there any solution to this or should I just give up?


I am trying to output the salary for each shift, but when outputted the salary shows up as 0.00 how can i correct this problem  ? I have tried declaring the salary as float but i was unsuccessful ............................................................................................................ package overtime.pay; import javax.swing.* ; import java.util.Scanner; /**  *  * @author whitneykenny  */ public class OvertimePay {      /**      * @param args the command line arguments      */     public static void main(String[] args) {         // TODO code application logic here               Scanner Hours_worked = new Scanner(System.in);     System.out.println("Enter how many hours worked ");     int total_hours = Hours_worked.nextInt();          if (total_hours == 40||total_hours < 40){                  System.out.println("Employee did not make any over time ");              } else {                          System.out.println("The employee made overtime");               }         final double first_shift = 17.00;        final double second_shift = 18.50;        final double third_shift =  22.00;                  Scanner selected_shift = new Scanner(System.in);     System.out.println("Which shift was worked  ");     String shift_worked = selected_shift.nextLine();                       double salary = 0 ;                    if (shift_worked == "first") {  salary =  first_shift;           }  else if (shift_worked == "second")            {salary = second_shift;                          }else if (shift_worked == "third")             {                          }   System.out.println("Your salary is " + salary );                         }                                                    }


Prove if $W \subset V$ is a subspace such that $T(W)\subset W$, then $V/W$ is finite-dimensional.

Let $V$ denote the vector space of polynomials in one variable with coefficients in $\mathbb{R}$, and let $$T(f(x)) = xf(x).$$ Prove that if $W \subset V$ is a subspace such that $T(W)\subset W$, then $V/W$ is finite-dimensional.  First I let $f(x) \in W,$ such that $a_0+a_1x+a_2x^2+...+a_nx^n$, and $T(f(x)) = a_0x+a_1x^2+a_2x^3+...+a_nx^{n+1} \in W$. So I think $W$ is the set contains polynomials such that $a+ax+ax^2+ ... +ax^n +...ax^\infty$. But I am not sure about it, and how it is related to finite-dimension.   Please help me to solve this problem, thank you!!


Why doesn't the admin always run an admin terminal?

If I'm the admin, is there a benefit to using sudo in front of every command that requires it instead of just turning on root access with sudo -i and not worrying about it?


display automatic turns to the side (sensor)

If i cant my laptop to the side the display turns in this direction. I dont need that because I have no touchscreen. How can I disable that? My system: HP Probook 650 G2 Ubuntu 18.04  Thank you Raphael


Am I able to determine what's going on after I deployed a program where I write past the end of an array?

I've written a program which writes one float value to one place past the end of an array. I have the code and the compiled binary file. Am I able to somehow determine if I'm lucky and the program will work forever?  The program we're talking about is for ESP8266.


terminal will not allow upgrade of 1604 lts

Terminal reads     Dell-DM061:~$ sudo apt-get upgrade E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable) E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?


Is it possible for a user to have a write access to a file and not be able to read it? How is it possible?   I tried the following commands:  debianbox@debian:~/posix/io$ touch filetest debianbox@debian:~/posix/io$ ls -l filetest -rw-r--r-- 1 debianbox debianbox 0 14 oct.  03:10 filetest  debianbox@debian:~/posix/io$ echo "Hello World" > filetest debianbox@debian:~/posix/io$ cat filetest Hello World  debianbox@debian:~/posix/io$ chmod u-r filetest debianbox@debian:~/posix/io$ cat filetest cat: filetest: Permission forbidden  debianbox@debian:~/posix/io$   As you can see here, I have write but not read access on this file. How can this be possible? Is this considered as a bug? If not, in what situation would this be useful?


I'm producing a pamphlet, so I'm using the twocolumn option to \documentclass, and \usepackage[landscape]{geometry}. The goal is to print out some pages, and fold each 8.5"x11" sheet along the middle, nest the folded sheets, and staple down the middle. I've got the layout looking pretty nice, but I realized that I need to not only print two-sided, but I need to permute the columns to get them in the right order in the pamphlet.  To put this very explicitly, in the case of two folds of paper forming the pamphlet we get eight columns in total, and they must be ordered like this:  \documentclass[12pt,twocolumn]{article} \usepackage[landscape,margin=1cm]{geometry} \usepackage{nopageno} \setlength{\columnsep}{2cm} \begin{document} \huge\centering % First fold. 8 \newpage 1 \newpage 2 \newpage 7 \newpage % Second fold, inserted inside the first. 6 \newpage 3 \newpage 4 \newpage 5 \end{document}   So, if you print this document out two sided, and then fold the second page and insert it into the first folded page, you get a nicely ordered pamphlet, with the columns sequentially numbered.  Does anyone have any advice on how to automatically reorder the columns according to this rule? Alternatively, maybe there's an entirely different way to do it? For example, I could separate each column into its own true page in the output PDF, then script pdftk to permute the pages, and print two pages per physical sheet of paper, but I don't want to lose control over the inter-column spacing.  Thanks,


Hi having problems with updating ubuntu 14.01  sudo apt-get update   Gives me the following.     E: Typen »!DOCTYPE« er ukendt på linje 1 i kildelisten /etc/apt/sources.list.d/playonlinux.list   E: Listen med kilder kunne ikke læses.   Translated:  E: Type >>!DOCTYPE<< is unknown on line 1 in sourcelist /etc/apt/sources.listd/playonlinux.list E: list with sources couldn't be read.  After the >> in the code this symbol (<), without the () but if I write it in, the block disappears in here... (hope it makes sense)  I'm aware that it maybe would help to delete playonlinux, but my software-center won't open and I don't know any other way of deleting the program..  sudo rm playonlinux   doesn't work, don't know if I'm using the code correct..  Kind regards - The rook


We have a question related to a DB query :   CREATE TABLE `Action` (   `id` int(10) unsigned NOT NULL AUTO_INCREMENT,   `emp_Id` int(10) unsigned NOT NULL,   `name` varchar(60) NOT NULL,   `updated_action_at` datetime(3) DEFAULT NULL,   `created_At` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,   `notes` varchar(400) DEFAULT NULL,   PRIMARY KEY (`id`),    KEY `action_empId_fk` (`emp_Id`),    CONSTRAINT `action_empId_fk` FOREIGN KEY (`emp_Id`) REFERENCES `Employee` (`id`) ON DELETE CASCADE,  ) ENGINE=InnoDB AUTO_INCREMENT=502004 DEFAULT CHARSET=latin1   CREATE TABLE `ActionAssignedTo` (   `action_Id` int(10) unsigned DEFAULT NULL,   `emp_Id` int(10) unsigned DEFAULT NULL,   KEY `actionassignedto_emp_id_foreign` (`emp_Id`),   KEY `actionassignedto_action_id_foreign` (`action_Id`),   CONSTRAINT `ActionAssignedTo_ibfk_1` FOREIGN KEY (`emp_Id`) REFERENCES `Employee` (`id`) ON DELETE CASCADE,   CONSTRAINT `ActionAssignedTo_ibfk_2` FOREIGN KEY (`action_Id`) REFERENCES `Action` (`id`) ON DELETE CASCADE ) ENGINE=InnoDB DEFAULT CHARSET=latin1  CREATE TABLE `Employee` (   `id` int(10) unsigned NOT NULL AUTO_INCREMENT,   `vendor_Id` int(10) unsigned DEFAULT NULL,   `name` varchar(40) NOT NULL,   `mobile_Number` varchar(15) NOT NULL,   `active` tinyint(1) DEFAULT '1',   `updated_At` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,   `created_At` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,   PRIMARY KEY (`id`),   KEY `employee_vendor_id_foreign` (`vendor_Id`),   CONSTRAINT `employee_vendor_id_foreign` FOREIGN KEY (`vendor_Id`) REFERENCES `Vendor` (`vendor_Id`) ) ENGINE=InnoDB AUTO_INCREMENT=511 DEFAULT CHARSET=latin1   We want to find the action created by employee with Action.empId = 4 along with the list of Assignee (an action can be assigned to multiple people)  We have the following query :   Select     notes,             Action.id,             AssigneeName.name,             ActionAssignedTo.emp_Id  from       Employee inner join Action  on         (Action.emp_Id = Employee.id  and        Action.emp_Id in (select Employee.id                               from Employee                               where Employee.vendor_Id = 1)) inner      join ActionAssignedTo  on         Action.id =  ActionAssignedTo.action_Id inner join Employee as AssigneeName  on         ActionAssignedTo.emp_Id =  AssigneeName.id where      Action.emp_Id = 4   Now, lets say if Action with id = 10 was assigned to 2 people : John (empId : 2) And Jack (empId : 5) --> the above query returns following results :  (columns from the query)  notes                       | Action.id | AssigneeName.name | ActionAssignedTo.emp_Id 1. Finish Designing Queries | 10        | John              | 2 2. Finish Designing Queries | 10        | Jack              | 5   If we observe the above results the first 2 columns get repeated for the Assignees for SAME ACTION ID  --> is there a way we can merge them something like   1. Finish Designing Queries |10         | { John : 2  , Jack  : 5}   Basically records being merged into one.


Is this the best way to write this sentence below?  Moving forward, I hope to apply my experience to a cause that I am passionate about:  education.


Is there a service or db to download or convert Postal Codes to Geo-Shapes / Polygons?

I'm looking for a service that converts Postal Code of Major European Cities to Geo Shapes (List of Lat/Lng) pairs like when you go to Google Maps and type for examples 10557 Berlin, and it draws boundaries around the are for that Geo-Code.  I found some Hacky ways to use the official Maps for this, But I don't wanna rely on that. is there a paid service or downloadable files that has such data.  Given that I don't want Postal Code to (1 Center Point Lat/Lng) but instead to a lit of points to form the shape for that Postal Code.


When a sorcerers bloodline states they can change a spell's element, what happens to extra effects?

When a sorcerer of a fire bloodline changes a spell's elemental damage from, say cold, to fire, but the spell has additional effects, say, creating an  on the ground to make enemies slip, what happens to that effect? Does the spell spit out fire, and leave behind ice? Or does its extra effect flavor for the new element, creating bizarre situations?


Problem 15-24 of Michael Spivak's Calculus (first edition) is      Prove that $|\sin x - \sin y|< |x-y|$ for all numbers $x$ and $y$. The   same statement, with $<$ replaced by $\leq$, is a very straightforward   consequence of a well-known theorem; simple supplementary   considerations then allow $\leq$ to be improved to $<$.   OK, so $|\frac{d}{dx} \sin (x)|\leq 1$, so the mean value theorem gives us the weak inequality. The strict inequality seems intuitively clear to me when I draw a line of slope 1 through the origin and compare it to the sine graph. But I'm trying to make this rigorous.  There are some ideas , but I suspect the author had something more elementary in mind to strengthen the inequality. Note that this is before the fundamental theorem of calculus has been introduced in the book. Any ideas?


I Installed Ubuntu Desktop on Windows 10.  Now the grub menu is not showing windows 10 in boot menu.  Grub repair gave me the following link.    Kindly help me to recover back the Windows 10.  Regards Jayamohan.M


Is there a difference between "sugar cane" and sugarcane? Is sugarcane wrong? What is the gramatical rule for joining two names like that?  I have found 13.500 entries on google for sugarcane, but 16.000 for sugar cane.   Is that a matter of style or grammar? What do you guys think?


I recently installed Ubuntu 12.04 (64 bit) on my new laptop, though I've been encountering somewhat of a problem. Namely, the laptop will freeze every now and again. The time it freezes seems to be when something is happening, with the mouse, usually, and I don't think I've seen it freeze from me going away and coming back yet. I can un-freeze by (Ctrl +Alt +F1) followed by (Ctrl +Alt +F7), which a friend suggested might be to do with X crashing, though I'm somewhat of a Linux newbie myself.  I've tried reinstalling Ubuntu multiple times, and my system is up to date.  My graphics card is a NVIDIA GeForce GT 740M, and my processor is an Intel® Core™i7 Quad Core Mobile Processor i7-3630QM (2.40GHz) 6MB.  Anybody have any ideas? I've tried quite a lot, but any help would be greatly appreciated.


Anchor Text code string is automatically modified by WordPress

I have created an ad for a merchant wanting to rent ad space on my website home page. After creating the ad, (anchor text and pic/graphics with embedded hyperlink) the merchant has requested I remove my url from the ad code. The anchor text along with the embedded hyperlinks links to the merchant's home page.  Problem is I don't know how my url was added to the code as I never inputted it in the original code in the first place. Somehow it was added by I think, WordPress or my server (PHP).  When I view the page source I do see my url was added to the ad code.  Can anyone help explain this and tell me how I can remove the url? Also, if I am able later to remove my url, how will it affect the hyperlink and anchor text?  Thank you, -Dan  Hi s_ha_dum,  I have read your answer and have now made sure the code reads as abosolute url.  Here it is with absolute url:  If you are interested in helping others treat and prevent hypertension, consider a healthcare degree from Loyola Online Courses today!   It still shows in page source however with my url addended to the code string.  What am I not understanding? Thank you!


I know some apps in CS6 work and others don’t in Mojave. Has anyone tested Dreamweaver CS6 specifically?


proove a 3 digit block is divisible by 37

Let $a$ be a positive integer.  If $S(a)$ is the sum of 3-digit part of $a$, then prove $a$ is divisible by 37, if and only if $S(a)$ is divisible by 37.  I mention a, is the sum of 3 digit parts of a. For example, $a=5987654321$, then $S(a)=5 + 987 + 654 + 321 =1967$. I think this is very similar to the divisibility by 3, like all the digits sum is divisible by 3 then the number is divisible by 3. I think it can use decimal representation and then prove like that. And use congruences to help proove it. Can someone help judge if this is right?


Co-author contributed almost nothing and is blocking publication

Alice and Bob have co-authored a paper together. The contribution (data collection, analysis, writing) was 100% Alice and 0% Bob, except that the original idea was initiated during a conversation between Alice and Bob. Bob acknowledged several times in private that he did not contribute to the project, but he claimed co-authorship for the idea and Alice did not object to that. Alice spent almost an entire year working on the project. Bob spent less than a couple of hours in total. A manuscript with both names has already been circulated, submitted and rejected from one journal.  Bob is now trying to block the publication of the paper due to a personal conflict with Alice. In the meantime, Bob became envious of Alice's early successes and decided to do everything to slow down her career, even at the expense of his own publication record. Bob is already tenured and has no pressure to publish. Alice, by contrast, needs more publications for her forthcoming tenure review. Of course, Bob never explicitly refused to submit the paper. But instead of sending it to a prestigious outlet (where the paper would have a good shot) he insists that they send the manuscript to a non peer-reviewed and unknown journal, which would not help Alice's tenure case. Of course he makes no effort in trying to find an agreement, as he would be happy not to submit the paper at all. Clearly, his decisions are driven by spite and malevolence only and he takes great care into not writing anything incriminating for him.  Is there anything that Alice can do in that situation? Does she have to resign herself to never publishing the paper? What are the risks for her if she removes Bob's name without his agreement and submits the manuscript on her own?  PS: as a response to Captain Emacs' comment, Bob's only contribution was to say "why don't we study the causal effect of X on Y?" in an informal conversation. Alice did absolutely all the rest (literature review, design of the protocol, data collection, analysis, conference presentations, etc.). But there is no evidence of this, other than the fact that Bob would be unable to answer any question that goes into the detail of the paper.


Prove that the polar decomposition of normal matrices, $A=SU$, is such that $SU=US$

Assume $A$ is a normal matrix. Suppose $A=SU$ is a polar decomposition of $A$. Prove that $SU=US$.  I have no idea to prove this.  $A$ is normal then $AA^*=A^*A$. And then we have $$ SS^*=U^*S^*SU. $$ But I don't know how to continue.


I am looking at   and trying understand the proof for the theorem that states:  Given a nonzero ideal I in $P(F)$, there is a monic polynomial $p(t)$ such that   $$I=\left\{q(t)p(t) | q(t) \in P(F) \right\}$$  Proof goes like  Since $I$ contains at least one nonzero element, we can let $p(t)$ be a nonzero element of $I$ of minimum degree. We can show that every element of $I$ is a multiple of $p(t)$. Let $f(t) \in I$. Then there exist $q(t),r(t) \in P(F)$ such that  $$f(t) = q(t)p(t) + r(t)$$ and deg $r(t)$ < deg $p(t)$. Since $p(t) \in I$, so is $q(t)p(t)$, and therefore so is $$r(t) = f(t) -q(t)p(t)$$.  By the choice of $p(t),r(t) = 0$, so $f(t)$ is a multiple of $p(t)$.  What I am having trouble understanding is why $r(t)$ must equal $0$. If someone can explain why it is, I'd appreciate it.


One must experience and process death to see Thestrals. But *must* one physically witness it?

Inspired by the famous question, something subtle about it struck me.  Harry definitely witnessed and dealt with Cedric's death. It took a while before he could see the Thestrals because it takes a while to process loss. Luna can see them because of her mother's death. I believe Hagrid can see them because of one or both of his parents' deaths.  Now, is there any evidence to say if Hagrid and Luna literally witnessed death (reasonably unusual but it happens - though Luna would have seen her mother's particularly unpleasant sounding death, poor girl) or does experiencing the loss and processing the passing count? In this case, most Hogwarts age students should probably be able to see the Thestrals assuming that the death of a grandparent or other relative would count.  So, do you need to witness death, or experience a loved one's passing?


Prove $(\cos{x})^\prime = -\sin{x}$ and $\sin^2{x} + \cos^2{x} = 1$

We define the functions $\sin{x}$ and $\cos{x}$ as follows: $ \sin{x} = \sum_{k=0}^{\infty}{\frac{(-1)^kx^{2k+1}}{(2k+1)!}}$ $ \cos{x} = \sum_{k=0}^{\infty}{\frac{(-1)^kx^{2k}}{(2k)!}}$ Using this fact show that: (i) $(\cos{x})^\prime = -\sin{x}$ (ii) $\sin^2{x} + \cos^2{x} = 1$ I've seen proofs on these using other methods but not sure how to arrive at the same conclusion using the definition of the functions stated above. I managed to proof $(\sin{x})^\prime = \cos{x}$ by: $ \sin{x}^\prime = \frac{d}{dx}\sum_{k=0}^{\infty}{\frac{(-1)^kx^{2k+1}}{(2k+1)!}}$  = $\sum_{k=0}^{\infty}{\frac{(-1)^kx^{2k}}{(2k)!}}$ = $\cos{x}$ But when I tried to differentiate $\cos{x}$, I got stuck here: $ \cos{x}^\prime = \frac{d}{dx}\sum_{k=0}^{\infty}{\frac{(-1)^kx^{2k}}{(2k)!}}$ = $\sum_{k=0}^{\infty}{\frac{(-1)^kx^{2k-1}}{(2k-1)!}}$, which is not exactly $-\sin{x}$


When I put ice cubes in a glass of water, I find that sometimes they will stick together and form a sort of "bridge" between them as they melt.  There is usually a visible line where one ends and the other begins, and they break apart if pushed (but for the most part they stick together if they aren't interfered with).  I'm wondering how they form this bridge in the first place if they're melting, and why it stays together.


Nginx is not rewriting URLs ending in .php

Trying to redirect all requests from http://domain.com/subfolder/ to http://new-domain.com/subfolder/  With the configuration I have right now everything is working fine but if the URL is pointing to a php file, the redirect is not made, instead is trying to access the file from domain.com  Nginx configuration for domain.com is:      server {             server_name  domain.com;             return 301 $scheme://www.domain.com$request_uri;     }      server {             server_name domain.com www.domain.com;             root /var/www/vhosts/domain.com;              # Redirect that's now working for php file:             location /subfolder {                     return 301 http://new-domain.com$request_uri;             }              index index.php;              # Here are the default Wordpress nginx configuration files included             include /etc/nginx/global/restrictions.conf;              # Additional rules go here.              # Only include one of the files below.             include /etc/nginx/global/wp-multisite.conf;             include /etc/nginx/global/wordfence.conf;     }   Wordpress configurations included are the one from here:   And the nginx.conf is looking like this:      user www-data;     worker_processes auto;     pid /run/nginx.pid;      events {             worker_connections 768;             # multi_accept on;     }      http {              limit_req_zone  $binary_remote_addr  zone=one:10m   rate=2r/s;              ##             # Basic Settings             ##              sendfile on;             tcp_nopush on;             tcp_nodelay on;             keepalive_timeout 65;             types_hash_max_size 2048;             client_max_body_size 9M;             # server_tokens off;              # server_names_hash_bucket_size 64;             # server_name_in_redirect off;              include /etc/nginx/mime.types;             default_type application/octet-stream;              ##             # SSL Settings             ##              ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE             ssl_prefer_server_ciphers on;              ##             # Logging Settings             ##              access_log /var/log/nginx/access.log;             error_log /var/log/nginx/error.log;              ##             # Gzip Settings             ##              gzip on;             gzip_disable "msie6";              # gzip_vary on;             # gzip_proxied any;             # gzip_comp_level 6;             # gzip_buffers 16 8k;             # gzip_http_version 1.1;             # gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;              index              index.php index.html index.htm;             upstream php {                     server unix:/var/run/php5-fpm.sock;             }              ##             # Virtual Host Configs             ##              include /etc/nginx/conf.d/*.conf;             include /etc/nginx/sites-enabled/*;     }   So the question is, why is nginx trying to serve the php file from domain.com instead of redirecting? Is because of the upstram configuration from nginx.conf?   Any help is appreciated. Thanks!


How do I draw attention to an updated question?

I noticed that new posted questions get attention very quickly. If I take some time to read the replies and try myself, new questions often arise. When I edit my original post to add my new questions, I find the updated post is very hard to get attention again, like in .  How should I deal with it? The best way I can think of is to open a new post with my new questions, and if necessary there will be a link to my old post.


What symbol should I use for nonnegative real numbers

I know that positive real numbers can be denoted in the following way: $$ \mathbb{R}^{+} = \{x \in \mathbb{R}: x>0\} $$  I also encounter this symbol: $$ \mathbb{R}^{>0} = \{x \in \mathbb{R}: x>0\} $$  My question is:   How can I denote nonnegative real numbers, theoretically it should be $\mathbb{R}^{\geq 0}$, but I think it is not elegant way. I have the same question about two dimensional case. I met the following notation. Is it correct? $$ \mathbb{R}_{+} = \{(x, y)\in \mathbb{R}^2: x, y \geq 0 \} $$


get items greater than given datetime and less than given datetime in an array

I have an array that has a startTime. I want to get items where startTime in between 2020-12-10 09:30:00 and 2020-12-10 13:20:00. I am using the filter method to get the items from the array. startTime>'2020-12-10 09:30:00' // is working, returns array with 6 items but when i add startTime>'2020-12-10 09:30:00' &&  startTime<'2020-12-10 13:20:00' // returns null not able to understand why it not filtering the result when I use less than here is my code var empStart = empShift.filter(item => {     return item.startTime>'2020-12-10 09:30:00' && item.startTime<'2020-12-10      13:20:00'     })