Sole minimal element: Why not also the minimum?

A minimal element (any number thereof) of a partially ordered set $S$ is an element that is not greater than any other element in $S$.  The minimum (at most one) of a partially ordered set $S$ is an element that is less than or equal to any other element of $S$.    Let's consider the power set $\mathcal P (\{x,y,z\})$ together with the binary relation $\subseteq$.  The Hasse diagram shows what element(s) we're looking for:    It's easy to see that:   $\emptyset$ is a minimal element $\emptyset$ is the minimum   Now if we remove $\emptyset$ and consider $\mathcal P (\{x,y,z\})\setminus \emptyset$ instead, we get the following:   $\{x\}$, $\{y\}$ and $\{z\}$ are minimal elements there is no minimum   (1) We know that a minimum is unique and it is always the only minimal element.  (2) And from the example above, it seems that, if a sole minimal element exists, it is always the minimum.  But I read that (2) is false. Why?


Induction: How to prove that $ab^n+cn+d$ is divisible by $m$.

If $a+d$, $(b-1)c$, $ab-a+c$ are divisible by $m$, prove that   $ab^n+cn+d$ is also divisible by $m$.   I want to prove this by induction. For proving $ab^{k+1}+c(k+1)+d$ is divisible by $m$, i want to prove that $ab^k(b-1)+c$ is divisible by $m$ and then add it to $ab^{k}+ck+d$. Any idea how to prove $ab^k(b-1)+c$ is divisible by $m$? Or is there a better way to solve the problem?  Thanks in advance.


misbehaviour of "Leave closed" button in "Reopen" reviews

Story:  While browsing through Reopen reviews, I've clicked at "Leave Closed" button and I was presented with a modal dialog asking me to "Nominate the post for reopening / OK / Cancel". I've pressed "Cancel" and the case was resolved as I wanted: LeftClosed. I do not know what happens if I'd pressed "OK". I've not checked that in case it would interpret it as "Reopen" vote.  Bug/suggestion:  As far as I remember, the popup was related to "Reopen" button, not to "Leave closed" one. For "Leave closed" it makes a little sense. I think that 'back then' there was no popup dialog at all when voting for leave-closed, so I think that this dialog should be simply skipped for that button.  Repeatability:  100% over two 'leave closed' votes today.


Is it necessary to have an unlocked bootloader to root a device?

My LG Stylo 2 Sprint Version running on Android 7 Nougat has a locked bootloader. LG made sure that the bootloader can't be unlocked.  states that it's possible to root with a locked bootloader.  When the boot loader is locked, and the manufacturer doesn’t provide a legitimate method to unlock it, you usually need to find a flaw in the device that will serve as an entry point for rooting it. First you need to identify which type of boot loader lock you have; it can vary depending on the manufacturer, carrier, device variant, or software version within the same device. Sometimes, fastboot access is forbidden but you can still flash using the manufacturer’s proprietary flashing protocol, such as Motorola SBF or Samsung ODIN. Sometimes signature checks on the same device are enforced differently when using fastboot instead of the manufacturer’s proprietary download mode. Signature checking can happen at boot time, at flashing time, or both. Some locked boot loaders only enforce signature verification on selected partitions; a typical example is having locked boot and recovery partitions. In this case booting a custom kernel or a modified recovery image is not allowed, but you can still modify the system partition. In this scenario, you can perform rooting by editing the system partition of a stock image as described in the “Rooting with an Unlocked Boot Loader” section. On some devices, where the boot partition is locked and booting a custom kernel is forbidden, it is possible to flash a custom boot image in the recovery partition and boot the system with the custom kernel by booting in recovery mode when powering on the phone. In this case, it is possible to get root access through adb shell by modifying the default.prop file of the custom boot image initrd, as you’ll see in the “Abusing adbd to Get Root” section. On some devices, the stock recovery image allows applying updates signed with the default Android test key. This key is a generic key for packages that do not otherwise specify a key. It is included in the build/target/product/security directory in the AOSP source tree. You can root by applying a custom update package containing the su binary. It is unknown whether the manufacturer has left this on purpose or not, but this is known to work on some Samsung devices with Android 4.0 and stock recovery 3e. In the worst-case scenario, boot loader restrictions won’t allow you to boot with a partition that fails signature verification. In this case, you have to use other techniques to achieve root access.  This seems counterintuitive, but is it necessary to have an unlocked bootloader to root a device? Otherwise, do any of the methods mentioned in the article work?


What's the best practice for screen navigation after invalid user input?

Consider an Angular app with many user inputs over screens A, B and C. Screen C needs valid inputs from A and B; B from A only; and A is independent. Suppose while on screen B the user enters invalid inputs.   Question: What  navigation should I support for B in this case?   My current thinking is to disallow navigation to C due to data validity issues. But what about navigating back to B? On the one hand, there are no validity issues, and the user may want to look up screen A to help with screen B inputs. On the other hand, this would complicate the app's state management. An alternative is to disallow such navigation, possibly with an option to restore the last valid inputs at B.  As I lack experience in UX, I'd appreciate answers to help me with this trade-off.


Copy text of tag to clipboard using JavaScript

I want to copy input to my clipboard using javascript so is there any way I can do,Thanks WITHOUT MAKING AN INPUT FIELD JavaScript And HTML   function copy(input){    }
Text To Copy = hi <button type="button" onclick="copy('hi')">click to copy</button>


== or ===, which one should I use to compare two objects in javascript?

I do not mean deep comparison. I just want to know if two variables refer to the same instance. Should I use a==b or a===b? Can two variables point to the same memory but with different types? Because javascript has no such concept as class in C++, I do not know what an object's type is. Do all objects have the same type: "object" so === decides their types are equal? If so, === would be the same as ==.


I have a one question. How can I get all text file content to String format? Please show me that code. Thank you. P.S Search didin't help. Sorry for my bad English.


If $E(Y\mid X)$ is constant then $X, Y$ are uncorrelated.

Last minute studying please tell me how to:     Prove that if the expected conditional expected value of the random variable $X$ given the random variable $Y$ - denoted by $E(X\mid Y)$ - is constant then $X, Y$ are uncorrelated.


I'd like to setup an Alpine based Java 1.5 docker image (base on Alpine from docker hub) for my apps execution/development environment, but the installer fails to run due to some checking (df command returns nothing). Then I try to extract the image from the .bin file and add execution permission to the extracted image, and it gives me something like ELF... not found. I've double checked for the architecture according to my downloaded version of JRE installer to make sure they're the same.  I wonder how people install JRE 7/8 to Alpine? Why not 5? And the most important, what can I do beside giving it up?  Thanks in advance.


I've tried googling for "Time dilation due to acceleration" but found nothing particular. Here when I entered title of the question the site have not shown same question asked already. Upon typing in the question the site found:   I've read those still do not see clear answer to my question(s) below. In wikipedia for time dilation there are dilation due to relative speed and gravitational one. However as far as I've understood General relativity is based on "Einstein equivalence principle". And from the principle it follows that acceleration with 1g on a spaceship will be experienced same as gravitation on Earth surface. But what about time dilation on a ship accelerating 1g? (speed still small or accounted for separately if that is possible ...). If time dilation is the same due to equivalence, why then clock in the core of Earth will go even slower than surface whereas acceleration due to gravity = 0 in the core.


Insert Into Multiple values table using stored procedure and DataAccessLayer

I am trying making a test on how to add multiple values into a column, which accepts multiple values.  For example, I have two tables  Table 1: contains `ID` (`int`) primary, `Name` (`varchar`) Table 2: contains `ID` (reference to Table 1's `ID`), `Image` (`image`)   I created these tables, and I can insert data into table one, but how can I let it insert into multiple value column in table 2 (Image)?  I can have Id and add images how much I want, I tried with stored procedure, using insert, but failed, because I want to check ID is the same to ID in table 1 using where statement not working in insert  For more examples.  ID: 1, Name: Willam, Image:[AnyImage] (More than 1 image) ID: 2, Name: Edi, Image[Anyknownimage], Image[AnyNewImage] etc...   Anything that helps?


YA novel series involving "magical" student warrior

I think this was more of a fantasy series, though it was more subtle than The Lord of the Rings IIRC. Set in modern times - though there was some alternate realm thing that was less modern I think.   I read it about ten years ago, I think, and there were a number of books at that time. My brother and I stopped reading it shortly after the main character summoned a small demon somehow who was a bad influence... I think.  It involved a boy who somehow was at some kind of training school/academy. Unsure where it was located, but it needed a classic portal to get to it I think. I clearly remember some scene involving a car driving at specific speeds to get past some barriers. There may have been something about how the school was (slowly) moving or the wards were shrinking... unsure. I don't think it was only magic based, but that was some element of it. The boy had some kind of strange power that made him an incredible fighter, but he wasn't sure how (at least from what I remember). The recordings of him training just showed a white flash I think. I remember some scene in an elevator going down to the training floor where he went to a level below some adult with him.  There was something else about him joining a group that had twelve members, one for each month, whose powers grew and lessened based on how close the date was to "their" month.  Oh, and there was something about him looking for his mother I think? Perhaps in another "realm"?   Any help is appreciated!


Application switcher not cycling anymore on hold

10.9.5 here  Suddenly my Application Switcher won't cycle anymore on hold. It still can cycle between apps one by one, but if I hold command tab it will stop after reaching the right end of the row. Before that it used to keep cycling until I release command tab.  It's not so much that the loss of this minor feature is annoying, it is why it happened in the first place. As far as I know I didn't install any new app nor change anything. I found out that the same is true for any session not just mine. I also tried safe boot to no avail.  Thanks for any hint.


That cake looks good.    In formal proper grammar, may good (adjective) get used as an adverb? Or, may you read it as, That cake (noun phrase, nominal[?], argument[?]), looks (verb, predicate[?]), good (subject compliment[?].? How may I discern this, grammatically?


Please help me to identify this song so that I can find similar songs

I was referred here from music.stackexchange. Would be grateful if anyone can tell me what type/genre of music this is :-) Starting from minute 02:20:                                That majestic choir voice in the background after the video hits 02:20 is what I'm actually looking for. Where can I find similar songs and what are they called or categorized as?


I'm working with a Debian GNU/Linux 7.5 (wheezy)   When I check the file /etc/apt/sources.list The file has this line:  # Line commented out by installer because it failed to verify: #deb http://security.debian.org/ wheezy/updates main   I tried to replaces for another repo line, but each time I replace it and run the command apt-get update after a while, I get:  E: Some index files failed to download. They have been ignored, or old ones used instead.   What should I do to solve this problem?


Can we have an updated beta (TestFlight) app?

The Stack Exchange beta iOS app distributed over TestFlight will expire in 2 days has expired. After the 100 day test period, the app won't start any more so all beta testers can't use the app then.  Can we please get an updated release so we don't have to remove the app and install the current release from the App Store instead?


Word or phrase for capitalizing pronouns referring to gods

Some publications capitalize He, Him, etc., when referring to a god.    What is this practice called? 'Proper noun' is rather generic.


Im trying to parse some weather json data in my email. But I cant quite fiqure out the syntax. With this code I'm trying to get the main.temp value printed. Below is my code so far, but it dosnt work :-(  %%[  var @Json  set @Json = '{ "weather": [     {         "id": 800,         "main": "Clear",         "description": "clear sky",         "icon": "01n"     } ], "main": {     "temp": 275.66,     "pressure": 1022,     "humidity": 80,     "temp_min": 272.15,     "temp_max": 278.15 }, "sys": {     "type": 1,     "id": 5245,     "message": 0.0065,     "country": "DK",     "sunrise": 1459485462,     "sunset": 1459532996  } }' ]%% {{.dataobject JsonVar type=variable source=@Json maxrows=20}}    {{.data}}        {"target":"@Json"}     {{/data}} {{/dataobject}} {{#jsonvar}}    {{#main}}       {{temp}}    {{/main}} {{/jsonvar}}


How can cameras have the same number of megapixels even when the sensor size differs?

The image resolution for the respective megapixels remains the same whether the camera is of medium format or full frame or APS-C or even mobile phones. However the sensor sizes differ in these aspects.  For example, the maximum output image resolution remains the same for a 20 megapixel full frame or APS-C sensors.  How is the image impacted here?


If $f(t)$ is a Probability density function of a positive RV.  $\int_0^\infty\int_x^{\infty}f(t)dtdx$ Using fubini theorem should become $\int_0^\infty\int_0^{t}f(t)dxdt$  But why? Surely the answer is very simple but I don't see it. Fubini theorem allows the change of the order of integration. So it should become $\int_0^\infty\int_x^{\infty}f(t)dxdt$  but then I don't understand what meaning could have $\int_x^{\infty}dx$


Find the determinant of $N \times N$ matrix

I have the following $N \times N$ matrix. \begin{vmatrix} 0 & 1 & 1 & \ldots & 1 \\  1 & a_1 & 0 & \ldots & 0 \\  1 & 0 & a_2 & \ldots & 0 \\  \vdots & \vdots& &\ddots& \vdots\\ 1 & 0 & 0 & \ldots & a_n \\  \end{vmatrix}  There seems to be a pattern going on for  of this matrix, but I'm not sure how I would find the determinant for the $N \times N$ one.


I can't understand why this works with if statement and not switch:  if ((int)typeOfHall == 1) {//LocalHall     NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:@"Game"];     NSPredicate *p = [NSPredicate predicateWithFormat:@"player_id == %@ ",[[NSUserDefaults standardUserDefaults] valueForKey:@"LoggedUserId"]];     request.predicate = p; }   The code bellow it will not work (compile error: Expected expression (on NSFetchRequest)):  switch ((int)typeOfHall) {     case 1:         NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:@"Game"]; //Error Expected expression         NSPredicate *p = [NSPredicate predicateWithFormat:@"player_id == %@ ",[[NSUserDefaults standardUserDefaults] valueForKey:@"LoggedUserId"]];         request.predicate = p;         break;     default:         break;              }   I don't know why this happens. I suppose that switch and if statements are similar, but in this case it seems that are very different.  Do you have any clue why this happens?


SQLiteOpenHelper - Where do I store initial data?

I have some initial data to insert in my database. I've added it to my custom SQLiteOpenHelper class.  package com.company.database;  import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper;  public class MySQLiteOpenHelper extends SQLiteOpenHelper {     public static final String TABLE_NAMES = "names";     public static final String COLUMN_ID = "_id";     public static final String COLUMN_NAME = "name";      private static final String DATABASE_NAME = "my.db";     private static final int DATABASE_VERSION = 1;      private static final String TABLE_NAMES_CREATE = "CREATE TABLE " + TABLE_NAMES + "("             + COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "             + COLUMN_NAME + " VARCHAR NOT NULL);";      private static final String TABLE_NAMES_INSERT = "INSERT INTO " + TABLE_NAMES             + "(" + COLUMN_NAME + ")" + " VALUES "             + "('Antony'),"             + "('Benny'),"             + "('Carol'),"             + "('Daniel'),"             // ... AND SO ON ...      public MySQLiteOpenHelper(Context context) {         super(context, DATABASE_NAME, null, DATABASE_VERSION);     }      @Override     public void onCreate(SQLiteDatabase database) {         database.execSQL(TABLE_NAMES_CREATE);     }      @Override     public void onUpgrade(SQLiteDatabase database, int oldVersion, int newVersion) {         dropTable(database);         onCreate(database);     }      private void dropTable(SQLiteDatabase database) {         database.execSQL("DROP TABLE IF EXISTS " + TABLE_NAMES);     } }   Please note the insert statements. The quantity of names will increase and i don't want to keep this mess.  What should i do to fix it?


How secure/private is full disk encryption on a VPS?

Security principles say that if someone else has physical access to a machine, then there is no security/privacy. I'm wondering about some examples of this in the case where I want to have a hosted Virtual Private Server (VPS) with full disk encryption. This is the kind of encryption that you are offered the option of setting up when installing Ubuntu, where every partition of yours (root, home, swap, etc) is in one big LUKS-encrypted volume.  Let's assume you don't set up automated entry of the LUKS password on this VPS (instead entering it manually through SSH upon each reboot, using a creative solution like ), so that someone else trying to reboot your system would have to know the password.  What are the security or privacy risks with such a solution? Could the VPS hosting companies employees or some middle man somehow get access to your data? Sure they can take a snapshot of your entire server at any time, but in order to boot it up they'd need the password, so how could they access what's inside the image?  Could they somehow snoop the SSH keys or encryption password?  Because they have root on the physical machine that hosts the VPS instances, how possible is it for them to get root on my VPS?  Can they log key strokes sent to the VPS over SSH? If SSH secures only the communication until it gets decrypted at the server, then could they see what you are actually sending to the server?  I'm assuming the damage would be possible when your server is running, not when it is turned off, is that correct? So when the server is running (after you've already entered the LUKS password), what could they do? If they take a snapshot of your system then, what can they do with it?  Just trying to understand what security/privacy I'm getting vs what I'm not by doing full disk encryption on a server that somebody else has physical access to (i.e. VPS).


I am a dual Australian/British citizen. I have let my Australian passport expire, however due to a change in circumstances in the UK I am looking to return to Australia permanently within the next couple of weeks.  Will I be able to:   board a flight out of the UK on a one-way ticket? be allowed to re-enter Australia with my expired passport   Thanks in advance.


The limit to solve is $$\lim_{n\to\infty}\left(\frac{n^2+2}{2n^2+1}\right)^{n^2}$$ I tried to use L'Hôpital's rule but the derivatives are quite complex.


Choux pastry (Chocolate eclairs) doesn't rise

Last time I tried to make Chocolate eclairs (similar to cream puffs), the choux pastry just sat in the oven and basically fried.  It didn't rise/grow and so I couldn't hollow out the shells.  Any suggestions?  Recipe was from The Australian Women's Weekly Original Cookbook (Golden Press Pty Ltd, 1977) p. 204  It is almost identical to the one published on their website , with the exception that the cookbook recipe used 1C water and 1C plain flour.


"This question doesn't meet a  guideline" is incorrect if site name begins with a vowel sound

I was reviewing close votes on Ask Ubuntu, and noticed a grammatical error in the reasoning message:  Currently, it says:  This question doesn't meet a Ask Ubuntu guideline  It should say:  This question doesn't meet an Ask Ubuntu guideline  I'm posting this here since there are other SE sites with names that begin with a vowel sound (e.g. Interpersonal Skills and Esperanto). I know this is probably a bit of a fiddly bug, and it's not really that major, but, if possible, it should probably be fixed. Alternatively, changing the sentence to avoid the problem completely could work:  This question doesn't meet a guideline on Ask Ubuntu


How can I improve Commonwealth load time in Fallout 4 (PC)?

I love Fallout 4 but I absolutely loathe going into buildings because every time I come out, re-loading the Commonwealth takes a very long time (a minute or more).  This can't be an issue w/ my PC because it's a high-end gaming rig and this is a 5 year-old game.  Initial load times are fine. Loading a save game is fine (even saves in the Commonwealth). Entering areas (even complex ones like Diamond City or Goodneighbor) are fine also.    I ONLY experience the problem when leaving a building or an area and it has to re-load the commonwealth. It's so bad, I literally have time to get up, go to the bathroom, and come back to my chair before it's done.  I thought maybe it might be an issue with my save file, so I backed it up and deleted the entire save/settings folder to make the whole game start fresh.  Nope. The first quest in Concord has you entering/exiting the Museum of Freedom a couple times and it's just terrible.  Computer specs: 8-core i9 32GB RAM 2TB EVO 970 SSD (NVMe) Vega 64 video card 2560x1440 Dell IPS display, 60Hz Windows 10 1909 Enterprise


Is there a simple reason why the expected number of coin flips till getting $m$ more heads than tails or $n$ more tails than heads should be $mn$?

I flip a coin until I get $m$ more heads than tails, or $n$ more tails than heads. Let the expected number of flips of the coin before stopping be $f(m,n)$.  I obtained $f(m,n)=mn$ from the recursion $f(m,n)=1+\frac{f(m-1,n+1)+f(m+1,n-1)}2$ with $f(k,0)=f(0,k)=0$ for all $k$.   Other than going through this recursion (and either solving by inspection or by writing as linear recurrence in single variable and solving brute force), is there an intuitive reason you should expect this process to take $mn$ flips? I was thinking about the more general problem with probability $p$ of getting heads and was struck by how simple the formula became when handling, what turned out to be a special case (general formula broke down) of $p=\frac12$.


Book - Human kidnapped by aliens and forced to fight other aliens

I read this book more than 25 years ago so it's likely 70's or earlier as it was "older" when I read it.   It’s not long, maybe 300 pages? Involves human and other species I believe it was at least one human who was kidnapped (can't remember gender) by aliens off of a boat or some other isolated place (not a house or anything) Aliens pit these harvested/kidnapped species/people against each other in combat on a planet.  It's not great writing and seemed very easy for me even at 10-12 years old.    I believe it was a female author...


coming originally from 3rd edition DnD and recently started 5e, I'm a little bit confused about the use of animal companions in 5e. Is there any possibility to obtain an animal companion outside the Beastmaster Ranger class? Did the Druid really lose its ability to have a companion in 5e? Or is there a workaround to make an animal becoming loyal to a character? Maybe through animal handling plus some magic?


Identification of species found in fly lab

I just found this in my Drosophila lab (within a closed vial) - unfortunately it was dead having been frozen for two weeks. Can anyone help id what it is, and whether it poses a risk to my flies (like mites do)? My inclination is that it is some kind of (moth?) larvae. Note the awesome corkscrew tail...  Found in Uppsala, Sweden, May 2014 in a vial of Drosophila with food (a yeast, sugar, and agar mix). Length is about 3-4mm excl. tail.


aliasing a slightly complex script on Linux/bash

Stormvirux provided this nice script in another thread.  It puts column headings on the output of an ls -l listing:  #!/bin/bash { echo Permissions links Owner Group Size Last_modMonth Last_modTime Last_modTime Filename; ls -l ; } | column -t | awk 'NR!~/^(2)$/' ls -l | head -1  Just running it on the command line works great.  I like it and want to use it as an alias for, say lsl on a Linux system running bash.    But I can't for the life of me figure out how to make the delimiters work so it is interpreted correctly.  When I try just using the alias command on the command line (which I do before I commit it to a configuration file like .bashrc), it won't work.  I get various errors when I try various ways to package it so it's interpreted correctly.    Can someone tell me how to get this working as an alias, or point me to a good reference that can clearly tell me what I need to do to get something like this working as an alias?


I am trying to determine which on Earth's surface has the lowest gravity. Googling is not finding anything concrete. My natural inclination would be to think of Mount Chimborazo in Ecuador, being on the equator (centripetal force) and also being the furthest point from the Earth's center. However, the GRACE  has the area listed in red for high gravity, presumably due to local mineral anomalies or mantle structure.


How to correctly use the extern keyword in C

My question is about when a function should be referenced with the extern keyword in C. I am failing to see when this should be used in practice.  As I am writing a program all of the functions that I use are made available through the header files I have included.  So why would it be useful to extern to get access to something that was not exposed in the header file? I could be thinking about how extern works incorrectly, and if so please correct me. Also.. Should you extern something when it is the default declaration without the keyword in a header file?


What is an accepted equivalent of non-parametric version two-way ANOVA in R package?

I use R for my statistical analysis.  I want to analyse a kinetics experiment that involves measurement over 3 time points with control, genetic background 1, 2 and 3.  Can anyone suggest a test and how to arrange the data for that particular test?   I would also need to do individual comparisons between time, group and time:group.


Is there a way to transfer money and items from iOS to Android?

I've been playing Jetpack Joyride on iOS, and I just got an Android device. Can I move my things, such as money and unlocks, from my iOS device to Android?


What makes DNA sequences most different/recognizable from a biological perspective?

We can pretty easily quantify the amount difference between two different strings/sequences of characters. For example, if we take the words  and , we can say they have a  of 1 (only one character-edit's worth of difference).  From a linguistic perspective, that distance is very noticeable, whereas the difference between  and  is much less so. Even though both pairs are only one edit apart (respectively), not all differences are equally distinguishable.  What is the biological equivalent of this when it comes to DNA binding proteins and RNAs? How do I identify which DNA sequences are more recognizably distinct from each other? For example, if we took a DNA binding protein that recognizes the sequence TGCCTCGAA, is it more likely to misrecognize AGCCTGGAA than TGCCAGGAA (or vice versa) as its target sequence?


LaTeX: Align first table line with \item contents

Consider this example:  \begin{enumerate}     \item Blablabla bla bla bla.         \begin{tabular}{l}             Lorem ipsum dolor sit amet.\\             Consectetur adipiscing elit.\\             Donec eu ante non mi sagittis molestie.\\         \end{tabular}     \item Next question \end{enumerate}   LaTeX will vertically center the table, which looks pretty weird. It basically looks like this:                            Lorem ipsum dolor sit amet. 1. Blablabla bla bla bla. Consectetur adipiscing elit.                           Donec eu ante non mi sagittis molestie.   How can I manage for the consecutive lignes to line up under the first one (with the same margin)? Something which would look like this:  1. Blablabla bla bla bla. Lorem ipsum dolor sit amet.                           Consectetur adipiscing elit.                           Donec eu ante non mi sagittis molestie.   Any ideas?  Thanks!


When I look at my available disk space on my imac it says ive used 700 gigs for "other" files. How do i find these files and delete them?


Can anyone explain conjugate priors in simplest possible terms?

I have been trying to understand the idea of conjugate priors in Bayesian statistics for a while but I simply don't get it. Can anyone explain the idea in the simplest possible terms, perhaps using the "Gaussian prior" as an example?


How can a question have more votes than views?

I just noticed this    How does that come?    The question was spam. Though I'm wondering how I could see these stats? A caching issue maybe?


Need help with proof with absolute value and complex numbers.

Had some trouble trying to prove the following problem.  Prove that if $|z| < 1$ and $|w| < 1$, then  $$ \frac{|z-w|}{|1-\overline{z}w|} < 1 $$  Would appreciate some help.


xfce4: "sudo startxfce4" - all good, but only "startxfce4" - fail. Why?

xfce4: sudo startxfce4 - all good, but only startxfce4 - fail. Why?  How to correct this behavior? I think that need to change permissions, but where?  Thank for your attention to this problem, and thank for your opinions about it.


wise Blender-World folks,  I'd like to do a proper simulation of gold foil stickers on glasses (like a decorated long-drink glass).  I am pretty sure about pictures with transparency and stuff that works well on other materials, but blender's glass-material seems to have a mind of its own...  Anyone around who has some hints? That would be awfully nice, thank you so much in advance!  Pls have a nice day.


Isomorphism of a product $C_n \times C_m$ of cyclic groups with the cyclic group $C_{mn}$

Given that $C_n$ is a cyclic group of order $n$, what conditions must integers $n$ and $m$ satisfy such that the group $C_n \times C_m$ is isomorphic to C$_{mn}$?   So I attempted to investigate a few lower-order cyclic groups to find a pattern. In particular, I looked at $C_2 \times C_3$ and compared it to $C_6$. Here are a couple of diagrams:  $C_2 \times C_3$ -   $C_6$ -   They Cayley tables look pretty different (identity elements are all over the place for $C_2 \times C_3$) so I concluded that they are not isomorphic.  I did the same for $C_2 \times C_4$ and $C_8$:  $C_2 \times C_4$ -   $C_8$ -   Again, I arrived at the conclusion that the 2 groups are not isomorphic due to their Cayley table structure.  It seems I'm stuck now. Are my conclusions wrong for the examples I examined? If so, how do I find the conditions for the general case of comparing $C_m \times C_n$ with $C_{mn}$?


why nautilus will open automatically when kde loads?

Recentlly every time that laptop turns on and  kde loads, nautilus will opened automatically. why ?  I installed kde on ubuntu 11.10.


Convex combination of quasiconvex functions.

Is a convex combination of two quasiconvex functions necessarily quasiconvex? If not, what can be said about the convex combination?


Prove $\sum x_n < \infty \implies \sum \frac{\sqrt {x_n}}{n} < \infty$ if $x_n \geq 0$

Given $ \sum x_n  < \infty$ , I need to show that this implies $\sum \frac{\sqrt {x_n}}{n} < \infty $ if $x_n \geq 0$  I thought of using Abel's test to test the convergence but that test couldn't be applied here as $ \sum x_n  < \infty \nRightarrow  \sum \sqrt{x_n}  < \infty$  . I am completely stuck at this point. Any hint how to approach?


How can I vertically align the first line of a multi-line node to an object?

I'd like to have the first line of the node centered vertically with the object (here: a line) on the left of it. How can I do that?  Of course I could split the elements into several parts and then fine-tune the little bits, but I would really like to use a solution that does not include manual shifting.  Picture    MWE  \documentclass{standalone}  \usepackage[T1]{fontenc} \usepackage[utf8]{inputenc} \usepackage{lmodern}  \usepackage{ tikz, }  \usetikzlibrary{ intersections, calc }  \begin{document} \begin{tikzpicture}[font=\small] \draw (0,0) coordinate (A) (1,0) coordinate (B) ; \draw[thick] (A) -- (B) node[right, text width=5cm] {Words Words Words Words Words Words }; \end{tikzpicture} \end{document}


Trying to get to 14 version by updating 12.40 to 13.04 but get failed fetch error. Have tried upgrade through Software updater and get all the way through to the update prompt "you should update to 13.04" I click update get the 'release notes' window and select 'upgrade' and than i get the 'Fetching the upgrade failed. There may be a network problem.' have tried numerous things to no avail.


What answer should I choose as the correct answer for my question?

Is it the best answer or the one I liked the most? I am really confused between two answers. Some of them are simple and clear, a second is informal. Is there a way to close my question without choosing an answer?


Is $e^x$ the only isomorphism between the groups $(\mathbb{R},+)$ and $(\mathbb{R}_{> 0},*)$?

If so, how might I be able to prove it?  EDIT: OK, thanks to many answers especially spin's and Micah's explanations. All of the answers were extremely helpful in understanding -- I have accepted Micah's because it seems the most complete, but all answers provide helpful additions/perspectives! I have tried to summarize:     $\phi$ is an isomorphism between the groups if and only if $\phi(x) = e^{f(x)}$ where $f$ is an isomorphism from $(\mathbb{R},+)$ back to $(\mathbb{R},+)$.   Of course there are lots of such $f$, especially when we take the Axiom of Choice.  However, it seems from the answers and Micah's link () that the only "nice" solutions are $f(x) = cx$ for a constant $c$. It seems that all others must be "highly pathological" (in fact $\{(x,f(x))\}$ must be dense in $\mathbb{R}^2$).  A remaining question is, how strong is the statement     All such isomorphisms have the form $e^{cx}$ for some $c \in \mathbb{R}$   or its negation? Or what is required for each to hold?  One answer seems to be that supposing the reals have the  is sufficient to rule out other solutions (as is assuming every subset of the reals is measurable, assuming the , and it holds in ). For more, see , , and .


There have been several post on this subject, but most are dated 3-4 years ago, or more. I have recently installed Minecraft on my iMac. My sons have it installed on their iPads. Is there any way for them to join the world I've created on the iMac?  I didn't think this was a duplicate question, as the ones I had found were old. Further, there appeared to be conflicting answers in those that I did find. Thus, my reason for this post was to get an August 2016 clarification.


VB checking if object exists before creating

Is their a way to check an application exists before I write in the code to create the object   I know this is install and I can use it but what if I want the program to check first ?  Set objOutlook = GetObject("Outlook.Application")


Does RPM (5400 vs 7200) matter for a secondary internal laptop data drive?

I am wanting put a secondary internal hard drive in my laptop. My primary drive is a 7200RPM / 64GB SSD hybrid which performs really well.  I want to install another hard drive purely for data, mainly GIS (Geographic Information Systems) spatial data and file spatial geodatabases as well as for photography data such as Adobe Lightroom files (some form of a non-destructive database), image RAW files and photoshop files.  Basically, the files I will be accessing are large but aside from the RAW image files and large TIFF files they are likely very fragmented.   Solid state drive for purely data is not an option right now ($) because I need 1TB but I am curious what is more suitable for a secondary "data" drive; 5400 RPM  or 7200RPM?


Can the principle of inclusion/exclusion be used to count elements in the intersection of a sequence of sets?

The principle of inclusion-exclusion (PIE) is often used to count the number of elements in a union of $n$ sets in terms of an alternating sum of their various intersections:  $$ \left |\bigcup_{i \in [n]} A_i \right|  =\sum_{J \subseteq [n]}(-1)^{\left|J\right|-1}\left|\bigcap_{j \in J}A_j\right| $$  where $[n] = \{1,...n\}$. I'm running a psychology experiment that requires subjects to count the number of elements in various sets and in various unions of these sets. I would like to be able to calculate from the behavioral data the $implied$ number of elements in any arbitrary intersection of these sets. It seems this can be performed by writing the PIE in the following recursive form:  $$ \left|\bigcap_{j \in J \subseteq [n]}A_j\right| = \left[\left|\bigcup_{i \in J}A_i\right| - \sum_{S \subsetneq J}(-1)^{\left|S\right|-1}\left|\bigcap_{s \in S}A_s\right|\right](-1)^{\left|J\right|-1} $$  Two questions: (1) is this alternate (recursive) statement of the PIE correct? (2) If so, has anyone seen (or can they provide) a non-recursive solution that expresses the intersection of the $A_j's$ in terms of explicit unions only?


When I test my page speed for the site () it gives the score of 0 for defer parsing of JavaScript "3.6MiB of JavaScript is parsed during initial page load. Defer parsing JavaScript to reduce blocking of page rendering." Although JS minification is there. How to resolve this? Is there any plugin or something.


Using 3 external displays with the rMBP 13"?

I would like to replace my main dev machine (currently a custom built desktop machine) with a Macbook Pro. I have been using three external 24" 1920x1200 displays for many years now and found this setup to be very productive and want to keep using it after switching to a Mac. Now, with previous Macbook Pros such a setup was problematic, but I saw that this is now possible with at least the rMBP 15" by using 2 Thunderbold + 1 HDMI connections. Is this also an option with the rMBP 13"? If so, would this work well or is the Intel graphic chip in the rMBP 13" too slow for this?


How do I nest two field in my node.tpl.php?

I have two fields of multiple values. When I print render($content['field_photo']) and render($content['field_photo_caption']) I get:
caption

caption

caption
   How do I nest the values to get:
caption

caption

caption


How can we use custom iterables with string.join()?

The join() method for srings seems to work just fine for lists of strings and other built-in iterables. However, when I define my own iterables, join() cooperate. How can be write an iterable which join() is happy to have?  class IterATOR: # iter-ATOR     def __init__(self):         self.x = 0     def __next__(self):         self.x += 1         if self.x > 4:             raise StopIteration()         return 'hello world'  class IterABLE: # iter-ABLE     def __iter__(self):         return IterATOR()   print(30 * '#', 'BEGIN TEST ONE', 30 * '#') gable = IterABLE() gator = iter(gable) try:     while True:         print(next(gator)) except StopIteration as exc:     print(exc)   print(30 * '#', 'BEGIN TEST TWO', 30 * '#') gable = IterABLE() for elem in gable:     print(elem)   print(30 * '#', 'BEGIN TEST THREE', 30 * '#')  lyst = [str(x) for x in range(0, 5)] # tcs: test cases tcs = [lyst, IterABLE(), iter(IterABLE()), IterATOR(), lyst, iter(lyst)]  for tc in tcs: # for test case in test cases:     try:          print(type(tc).__name__.ljust(20), end ='')          merged_str = ''.join(tc)          print(" was a success:".ljust(20), repr(merged_str))     except Exception as exc:         print(" was a failure:".ljust(20), str(exc))   The output for test three is:  ############################## BEGIN TEST THREE ############################## list                 was a success:      '01234' IterABLE             was a failure:      'IterATOR' object is not iterable IterATOR             was a failure:      can only join an iterable IterATOR             was a failure:      can only join an iterable list                 was a success:      '01234' list_iterator        was a success:      '01234'


I am designing a circuit for SIM900 and PIC MCU. I am facing few problem on power supply for them. I will be giving 12v to the circuit. Now PIC works on 5volts and SIM900 works on 3.2v - 4.8v. At first I thought of using two different voltage regulators. But Now i am using 7805 to convert 12v to 5v and then using a voltage divider to convert 5v to 4v. Below is the schematic:    Here input voltage is 12v and using 7805 to convert it to 5v which will be given to PIC MCU. This 5v is also used in voltage divider circuit to convert it to 4v for SIM900. I have used R1=100 and R2=400 for voltage divider circuit. Is this circuit safe to use. Does voltage divider circuits are good to use. Please help. Thanks.!


My friend gives me Gentoo [installed yet]. I virtualized it on virtual box but my friend doesn't remember User and Password and he says me there is a method to remove user and password but he doesn't remember what this method is.  How can I do this?  In alternative, is there a method to create another account without touch that one?


Is there a way to see how the markup of a per-site meta answer is formed?

I sometimes see a useful markup feature in a per-site meta answer. However, I cannot edit it to see how one did it, since editing (or suggesting edits) is disabled for users with less than 2k reputation on per-site metas.  Is there a way to see the source code of a per-site meta answer?


How is Ondu Cleric's Rally ability resolved when more than one ally enters the battlefield at once?

If I start with an  on the battlefield and cast , how much health would I gain? I know it is somewhere between 4 and 6.  Posible options in my mind: a. The tokens enter at the same time, but the rally ability only counts there being two creatures on at once: The Ondu Cleric, and the token who activated Ondu Cleric's ability. This happens twice, so 2*2 is 4. (Didn't seem likely, but hey, this might be the case) b. The tokens enter one at a time, and the rally ability gives 2 health, then 3 health for a total of 5. c. The tokens enter at the same time, and the rally ability counts 3 creatures both times it is activated for a total of 6 (2*3).  Optional Question: What if I started with 2 Ondu Clerics on the battlefield? Would that just double the health gained, or would something else happen?


How to print out an input from ArrayList

I need to write a program that continuously asked for the input from a user. However, when the user inputs "None", the program should stop asking for the input and print out everything that was input before "None" was input. (EXCLUDING "None").   I am using an array list. However, when I input "None" the program still asks for user input.  Here is my code:   import java.util.ArrayList; import java.util.List; import java.util.Scanner;  public class ShoppingList {  public static void main(String[] args) {      List<String> Items = new ArrayList<String>();      Scanner keyboard = new Scanner(System.in);     System.out.println ("Enter name of item: ");      String item;      while(keyboard.hasNextLine()) {         item = keyboard.nextLine();          if (item != "None") {             System.out.println("Item added: " + item);             Items.add(item);     }       else        break;     }      System.out.println("End of list");     System.out.println();      for (String i : Items) {         System.out.println(i);          }      }  }


lefty and righty classification question title

I am creating a survery where need to put the question about there "most used hand in general", what do we call  this behaviour combindly?  right now what I write     Are you lefy of righty?    a) lefty b)righty c) both   Please suggest me the proper word here, and also the sentence structure.


How to solve this summatory: $\sum _{n=0}^{\infty }n^2\:0.999^{n-1}\cdot 0.001$

How to solve this summatory?: $$\sum _{n=0}^{\infty }n^2\:0.999^{n-1}\cdot 0.001$$  I know how to calculate this one: $$\sum _{n=0}^{\infty }n\:0.999^{n-1}\cdot 0.001$$ as a sumatory of an arithmetic-geometric progression, but I don't know how to calculate this one with the square.


Render Error texture size is smaller than my output size, what does that mean?

When I render my scene, the render is a pixelated yellow image. Then it tells me that my texture size is smaller than my output size? I have not found any answers on how to take care of this problem. Here is a screenshot.


How to fix cannot access to a Thread elements from another Thread problem

I'm working on a C# WinForms project. I try to work with multi threading in a part of my App : Part code (Method) : public void ShowData() {     Thread t;     t = new Thread(() =>       {            using (GVentesEntities context = new GVentesEntities())           {               dataGridView1.DataSource = (from F in context.Facture.AsEnumerable() join C in context.Client.AsEnumerable() on F.CLT equals C.ID select new { ID = F.ID, F.Date, Client = $"{C.Nom} {C.Prenom}", Total = $"{(from df in context.Det_Fact.AsEnumerable() join cmd in context.Commande.AsEnumerable() on df.CMD equals cmd.ID where df.FACT == F.ID select cmd.QTE * cmd.PRU).Sum():00} MAD" }).OrderBy(x => int.Parse($"{x.ID.Substring(x.ID.IndexOf("-") + 1)}")).ToList();           }        });      Thread.Sleep(1000);     t.Start(); }  The problem is when I try to access this method when application is run I get an error : Error System.InvalidOperationException: 'Cross-thread operation not valid: Control 'dataGridView1' accessed from a thread other than the thread it was created on.' Please any help to handle this problem and execute my method with threading ? thanks in advance.


SImple Example To Update User Info From Front End

I want to give user ability to update their nickname from front end using wp_update_user and shortcode. The code below is working.        add_shortcode('user-profile', 'get_current_user_prof');        function get_current_user_prof() {       global $current_user;       get_currentuserinfo();             if(is_user_logged_in()) { $tableuserinf = "<form method='post' action='#'>

"; $tableuserinf .= "
Nickname:	<input type='text' name='fepusernick' value='". $current_user->nickname ."'/>
"; $tableuserinf .= "

<button>Submit</button></form>";            $user_id = 1;     $nicksname = $_POST['fepusernick'];     wp_update_user( array ( 'ID' => $user_id, 'nickname' => $nicksname ) ) ;                 return $tableuserinf; }           }   The only problem with the code above is its field showing the previous value of the database after update success. And will only retrieve the database data after the page is refreshed. This will confuse user. How to solve that problem?


Dont know why I am getting a NullPointerException

I have inputted data into an array c_pid[] from the database. Now i'm trying to run a loop. If the the value an array is not null then the loop should carry on. Everything seems to run fine. I am getting the desired output. But one problem which i have is that for some reason it is showning me nullpointer exception.  I have provided the code as well as the screenshot down below.  I am trying to run this loop  while(!c_pid[cnt].equals(null)){   after which im getting java.lang.NullPointerException error  <%@page import="storage.data"%> <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %> <%     String[] c_pid = new String[100000];     String c = "", pna = "", pty = "", ppr = "", stock = "", imgpath = "";     //String myList = new String[10];     int a = 0, d = 0;     int result = 0, count = 0;     int setres;     int[] arr = new int[100000];     String testval = "75";     int item_id = 0;     data dt = new data();     String item = "", cartid = "", user = "";     String[] prdid = new String[60];     int cnt = 0;      try {         dt.st = dt.cn.createStatement();         String select_match = "SELECT user_prod_id, COUNT(*) AS rep "                 + "FROM cart_table "                 + "GROUP BY user_prod_id "                 + "ORDER BY rep desc";         dt.rs = dt.st.executeQuery(select_match);          while (dt.rs.next()) {             //prdid[a] = dt.rs.getString("user_prod_id");             //a=a+1;             c_pid[cnt] = dt.rs.getString("user_prod_id");             cnt = cnt + 1;         }         out.println("
---------xxx--------");         String select3 = "select "                 + "product_table.p_id,product_table.p_type,"                 + "product_type.pt_id,"                 + "product_table.p_name,product_table.imgpath,product_table.p_price,product_table.stock,product_table.add_date,"                 + "product_type.pt_name "                 + "from product_table "                 + "inner join product_type "                 + "on product_table.p_type=product_type.pt_id "                 + "order by product_table.add_date desc"                 + "";         cnt = 0;         int size = c_pid.length;         out.println("Size of array is " + size + "
");         while (!c_pid[cnt].equals(null)) {             out.println(c_pid[cnt] + "
");              cnt = cnt + 1;         }     } catch (Exception ex) {         ex.printStackTrace();         out.println(ex);     }        %>


MacBook Stolen and locked remotely through Find My Phone but unable to locate it

My MacBook got stolen and I put it in lost mode  in Find My Phone, locked it and got email it successfully locked, but the app couldn't get its location.   How is this possible?  Is it that the thief has disabled location services on my laptop? But I am wondering how can he disable the them if it's locked with a 6 digit code?


sorting column data into a raw by unique data


In an English test book I found the exercise   That is a book. The book is thick. That book isn't thin. This is an interesting thick book.   Another one example   This is a compuer. The computer isn't old. This compuer is new. This is a good new computer.   I know the rule:  Use the to refer something that has already been mentioned.  I understand it like this: That is a book. - The book is being introduced for the first time. We use the indefinite article. The book is thick. - The book is being introduced for the second time. So we use the definite article. That book isn't thin. - "That" is a demonstrative pronoun. Before the word "book" we should use no article. This is an interesting thick book. - Why is there an indefinite article? We mentioned the book for the third time. We know about this book. I thought the sentence must be like "This is the interesting thick book." The first mention - a/an. The second (third/fourth) mention - the Please explain this situation? Maybe it is due to "This is an interesting thick book." We mentioned the book, not the interesting thick book/ So the interesting thick book is the new information for us. I think I understand! Am I right?


Trying to create a BST that sorts Fractions.  The treenode class  public class TreeNode<E> { protected E element; protected TreeNode<E> left; protected TreeNode<E> right; public TreeNode(E e){     element = e; } }   The fractions class...      import java.util.ArrayList; import java.util.Stack;  public class Fractions { private String fractionS; private ArrayList<String> tokenArray; public Fractions(String s){     this.fractionS = s; }  public String toString(){      return fractionS;  }  public String extractNumber(int n, String s){     String num = new String ();     char c;     for (int i = n; i<s.length(); i++){         c = s.charAt(i);         if (c >= '0' && c <= '9'){             num+=String.valueOf(c);         }else{             break;         }     }     return num; }  public Double getNumbers(){     char c;     Stack<String> numStack = new Stack<String>();     for (int i = 0; i<this.fractionS.length(); i++){         c = this.fractionS.charAt(i);         if (c >= '0' && c<= '9'){             numStack.push(extractNumber(i, this.fractionS));             i += numStack.peek().length()-1;         }     }     Double denominator = Double.parseDouble(numStack.pop());     Double numerator = Double.parseDouble(numStack.pop());     Double solution = numerator/denominator;     return solution; }   public int compareTo(Fractions f) {     Double d1 = this.getNumbers();     Double d2 = f.getNumbers();     if (d1<=d2){         return 1;     }else{     return 0;     } }   I get a NullPointerException on the call for compareTo method. Just trying to figure out the NullPointerException. I can do the rest myself. This is for a class, and I don't want to get in trouble.  Including the instantiating of fractions...  I also made changes to fractions class.  public void createTree(){ tokenizer(); Stack<String> numbers = new Stack<String>(); int count = 0; for (int i = 0; i<tokenArray.size(); i++){     char c = tokenArray.get(i).charAt(0);     if (c == '/'){         count+= 1;     }else if (c >= '0' && c <= '9'){         numbers.push(tokenArray.get(i));     } } for (int i = 0; i <count; i++){     String denominator = numbers.pop();     String numerator = numbers.pop();     insert(new Fractions(numerator + "/" + denominator)); }


How many combinations can be made in the game Sudoku

I have the game Sudoku. how many combinations can be made by random entering of numbers on the whole such that it makes unique combination in $3\times 3$ grid and $9\times 9$ also.


Sum values to the right of criteria in multicolumn range

I apologize in advance because I don't even know how to describe this best. But, I have 3 2-column ranges in which the left column is a unique identifier (ID) and the right column is quantity I'd like to sum up. There is some overlap between ID's in left columns. I created a column of sorted unique ID's but could not come up with a formula that would check each ID column for a criterion and then sum the values directly to the right of the match. Ideally, the formula would also work with "arrayformula" as the columns may get very lengthy. Here's an example spreadsheet  THANK YOU all


Magnetic field resistance material: are there any?

I was wondering with a question for a quite long time, thought to ask here.  I need to know is there any material or element which can block magnetic field? I mean I am searching for such material or element that cannot allow magnetic field though itself?  The practical scenario is, there are two permanent magnets and those are positioned within each other's magnetic field. I want to put something so that both the magnets become free of interference withing themselves.  Hope I could clarify my question.  Can anyone help me of give me some suggestion on this aspect please?


Earth isnt a perfect but has bulges because of its spinning. What actually creates the bulges? Is the same reason that makes a liquid have v shape in a rotational tube?


Before i buy this laptop, i would like to know other people experience with Ubuntu (and Linux) using it. Can anyone help me?


Lenovo Legion Y720 keyboard backlights not working

I am trying to get the keyboard backlight working on Lenovo Legion Y720. I've tried some of the instructions that are out there so far nothing. Also upgraded the kernel to 4.15.9-041509-generic without success. It would be OK to get at least one color working. Running Xubuntu 17.10 Lenovo Legion Y720 At boot, the keyboard lights lid up for few seconds and then disappears. All hints are welcome.


Distribution of the squared length of a multivariate normal vector

Let $\mathbf{X} \sim \mathcal{N}(\mathbf{\mu}, \mathbf{\Sigma})$ be a multivariate Normal variable with $d$ dimensions. I'm interested in the marginal distribution of $\|\mathbf{X}\|^2 = \sum_{i=1}^d X_i^2$. It is well known that if $\mathbf{\mu} = \mathbf{0}$ and $\mathbf{\Sigma} = \mathbf{I}_{d \times d}$, then $\|\mathbf{X}\|^2 \sim \chi^2_{d}$. However, is anything known about the general case, i.e. when the components are correlated?


No terminal or xterm and tty loops back to login

Based on what I've researched I've installed something which is causing this problem: Ubuntu 16.04 boots fine and goes to my desktop but I can't open a terminal session no matter what I try. When I Ctrl-Alt-F1 - F6 to log in, it loops back to login.  If I need a terminal to fix this I'm unsure how I can do that.


Managed Properties not Appearing in CSWP in SharePoint Online

I am not seeing any of my custom managed properties in the property dropdown in the webpart properties of my Content Search WebPart in my SharePoint Online tenant.  Here is what I've done: Site columns were created, added to custom content types which were in turn added to a list, content was added to the list, content was crawled.  The managed properties are configured and correctly mapped to their corresponding crawled properties.  The options on the managed properties are: Searchable, Queryable, Retrievable, Safe.  Using the SharePoint Search Query Tool I can query against the site collection and DO SEE these managed properties being returned with data in them so I know they are valid.  Problem is I don't see them in the property drop-down when editing the webpart properties of a Content Search Web Part. Should that list show all managed properties set to 'Retrievable' in the search schema?  I thought it was supposed to.  When I search within the site collection for the managed property from Search Schema it does appear. I have also created a custom display template whereby I want to bring in these custom managed properties, but that is also failing as it doesn't seem to recognize these managed properties (which makes sense since I'm not seeing them in the dropdown of the webpart properties). Since this is SharePoint Online, I have waited a day and then another day to ensure the updates are being propagated out to my site collection, but I still do not see them.  I'm very familiar with doing this in SharePoint 2013, but this is the first time I've ran into problems doing it in SPO. Note: although I don't think this is relevant, this is on a cross-site publishing page.  I would appreciate any ideas you think may be the problem. I'm at a loss what it might be.


Are there any flight price search engines with baggage allowance included?

I am looking for a flight search engine that includes a luggage calculator in the price. I recently booked a trip and had the choice between two carriers at the time, and not feeling very stupid I chose the cheaper one.  The crux is that after I had paid I found out that the more expensive airline had vastly different rules for baggage. In fact it allowed twice the amount of baggage without extra charge.  After having found the price for extra luggage very extreme I had already decided I will send the extra baggage as separate freight, because the speed is not important. But of course had I known this from the start I could have saved myself a lot of work and money.  I am aware that this information can be found on respective carrier website, but even within a single company it can differ from route to route. Would be handy if I didn't have to try and calculate it all myself.  So my question is simply, is there any flight search engine/price comparison site where I can also enter my total baggage needs to have it included in the price comparison between carriers?


"It was almost midnight when i reached home" .  in this sentence " home" funtion as  noun or adverb.  kindly clarify


No such file or Directory, even if file present and executable

I have two machines, and I have installed the exact same packages on both machines.  On one machine everything is working perfectly fine. But on another machine, there is at least one file where its No such file or directory, even if it is present and executable.  I can read the contents of file also.  I know that file is of 32bit, but on another machine same 32bit binaries are working okay.  Can somebody please help.  1st machine : Working Fine  bash # file /sbin/vxdmpadm /sbin/vxdmpadm: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.0.0, BuildID[sha1]=f62ed2d5a57fb9893ad2a89083c66493ce547c10, not stripped  bash # uname -a Linux 3.12.28-4-default #1 SMP Thu Sep 25 17:02:34 UTC 2014 (9879bd4) x86_64 x86_64 x86_64 GNU/Linux  bash # /sbin/vxdmpadm VxVM vxdmpadm ERROR V-5-1-2110  Incorrect Usage # << Expected.  bash # ls -lrt /sbin/vxdmpadm -r-xr-xr-x 1 root sys 972953 Oct 14 19:08 /sbin/vxdmpadm   2nd Machine - Faulty One  bash # file /sbin/vxdmpadm /sbin/vxdmpadm: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.0.0, BuildID[sha1]=2d90bb5228e59b2e8de22d0b8db36fb85aeb1064, not stripped  bash # uname -a Linux  3.12.28-4-default #1 SMP Thu Sep 25 17:02:34 UTC 2014 (9879bd4) x86_64 x86_64 x86_64 GNU/Linux  bash # /sbin/vxdmpadm bash: /sbin/vxdmpadm: No such file or directory   # << Why this is coming  bash # ls -lrt /sbin/vxdmpadm -r-xr-xr-x 1 root sys 972953 Aug 31 08:40 /sbin/vxdmpadm


Is it possible to enforce unique values in a column, excluding nulls?

I have a business requirement to have a FK field on TableA referencing TableB.  If there is a value in TableBID, it should be unique, but it's not mandatory, so there could be multiple records with null values.  Is it possible somehow to enforce this type of uniqueness on the DB level, using either an index or a constraint?


Documenting a giant web of inter-related stored procedures in an MS SQL database: What tool or format?

I hope this is a question with a shorter answer than "Read a 1000 page book", but then, if that's the real situation, then hit me with it.  I am not a real DBA, I'm a software developer who is realizing we need a DBA, and yet the shop I work in has zero DBAs. However our MS SQL database design including several core stored procedures, is a giant mess. The stored procedures are slow, we suspect they have bugs, but we don't even know how they are expected to work, so we don't know how to fix them.  As a start I've decided we'll document how it's supposed to all work, then we'll start unit testing, and building up a set of unit tests that help prove that the stored procedures actually do work. The logic that they perform is a key part of our application, you could say, it's the "crown jewels" of our company's main product, and the way it works is completely undocumented.  I'm looking for the specific technical documentation that a professional DBA might expect to have existing, or might write themselves, if they had to, to understand a giant web of stored procedures that call each other.   What is the usual format for documenting a large stored procedure? Description of expected values for each In Parameter  (ie "preconditions", "postconditions", ie, for boolean parameters what changes when you turn it on or off, etc?) How does one usually document it? SQL comments only? External tooling that is specific to the purpose? External "documentation"? We have no SQL tools, other than MS SQL Management studio, but we are wondering if there is a tool that would make understanding, documenting, and testing our environment better.  Maybe that is a better way to ask my question; What tool do I need to solve our mess?   Our goal is to be able to:  A. Use the documentation we generate, or whatever tools we add to our environment, to help understand how the procedures are supposed to work, so we can then go on to create unit test coverage for the stored procedures.  B. Show the client-app developers how to properly call each of these complex stored procedures.  C. Unit test our stored procedures.


Prove that a group with more than one element contains an element of prime order.


When clicking "show more comments" the 'hidden' comments are now placed between the extant comments, and they are hard to find. Thus, we need to reread all the comments that we already read. Please consider somehow highlighting these 'added' comments. Perhaps a different background colour would help.  Thank you!


I'm currently testing TexMaker and whenever I compile my .tex file these are the files that appear in the folder:    I'd like to have only .tex and .pdf files in my folder. Are the extra files necessary? Also, are they exclusive to TexMaker or would I have the same problem in another editor?


The following code  template <typename T, class ContainerType> ContainerType<T>::iterator elementIteratorAt(ContainerType<T> container, size_t index) {     return container.end(); }   generates a compile error at the function's return type (ContainerType<T>::iterator):      error C2988: unrecognizable template declaration/definition   Why does it happen and how to write this properly? I'm not even instantiating the template, just compiling.


Is Star Wars: The Clone Wars animated TV series canon?

According to , it falls into T-canon. But following source notes lead to dead links. I have been told by some that it is not canon, and others say it is. Can anyone provide current sources that show it either is or is not canon?


Jquery click handler not working in a table

I am using a Jquery plugin called Jquery Content Panel Switcher.  It does exactly what the title says, it switches out divs with ease.  The html for the page is:    One Two

   In each of my content panels I have a form.  In each form there is a table:

Rank 1

       Number	       Requirements

       1	       Info

       2	       More Info

   I am trying to fire off an action if a row gets clicked.  Here is the javascript I am using:  $(document).ready(function(){   $('#switcher-panel form table tbody tr').click(function(){      console.log("Clicked");    }); });   When I use the Jquery selector of $('#switcher-panel form table tbody tr') in my Chrome console, it finds the table and everything looks fine.  When I put it in my javascript file, nothing happens.  Some direction would be great.  Thanks for the help.


Prove partial derivatives exist, but not all directional derivatives exists.

During my analysis course my teacher explained the difference between partial derivatives and directional derivatives using the notion that a partial derivatives looks at the function as approaching a point along the axes (in case of of the plane), and a directional derivative as approaching a point from any direction in the plane. He also explained that the existence of directional derivatives is a stronger notion than the existence of partial derivatives exists: if all directional derivatives exist, then the partial derivatives exist too.  I am to show (not necessarily prove) a case where the partial derivatives exist, but not all directional derivatives exist (hence, f is not differentiable).


Some of you might get the “Server Offline” error after you install WAMP on your windows 7 system. This happens if IIS server was installed in the system prior to the installation of WAMP thus creating the clash of the port address where both the servers are trying to access


Sharepoint Add-ins vs Sharepoint Web-parts

Can someone explain to me the difference between the two and why I'd use one over the other?  I'm very new to Sharepoint am needing all the help I can get.


How to make that wheel follows road bumps

I'm working some simple project where I have a car which driving on road. Road has bumps. Of course, as rookie amateur :) , my wheels sinking into bumps. I tried various methods I found over internet, but had no success with any (rigid body, track to constarint, stretch to constarint, shrinkwrap constraint, etc. probably I don't know to use properly any of those). I attaching simple example .blend with one non flat plane as ground and one cylinder as wheel, animated to roiling from one end of plane to another. Is there some simple basic method, where I can tell cylinder to follow bumps on ground when rolling? I would like to avoid some complex methods as rigging, etc. cause I'm beginner and I believe that solution could be simple. Many thanks in advance.


I am trying to access my ubuntu 14.04 LTS account but am unable to. I login and i get the same login screen again. I have tried all the solutions present in the links :  1. 2.. I went to .Xsession-errors and saw an error which was not addressed in any of the links :  /etc/X11/Xsession.d/50_check_unity_support: line 7: 2731 Segmentation fault   (core dumped) /usr/lib/nux/unity_support_test   Looking for help. I do not use dual boot. I have tried every page solution available and none have matched my error or have been able to resolve it. I have tried to log into the guest session but it leads back to the login page.


Convert cities to make first letter to uppercase. if I have new york I want it New York

I'm using this code:       function ucfirst(field) {        field.value = field.value.substr(0, 1).toUpperCase() +       field.value.substr(1); }   this is working if i have a city like california ==> California. But if I have new york it will not convert the first letter.   Any tips how to make this code work?


Apache answer both HTTP and HTTPS on the same port

I'm trying to get apache to redirect from http to https, however I want them both on the same port (20100, but I doubt that will matter). Basically what's going on  except I'm not doing this for webmin. Currently I have it configured to serve HTTPS, and when I access with HTTP I get:  Your browser sent a request that this server could not understand. Reason: You're speaking plain HTTP to an SSL-enabled server port. Instead use the HTTPS scheme to access this URL, please.   There seem to be a lot of somewhat similar questions, however I am unable to find one that actually answers my question.


Is Android susceptible to OpenSSL vulnerabilities?

There has been a big  today, are android applications affected, and what can we do to get a secure version?  What about people with older devices (such as the HTC desire HD I have) that are on old android versions (2.3.5), is it possible (for example) to get a up to date browser that doesn't use the installed openSSl, or to get security releases to old versions of android?


I want to prepend a text contained in the file disclaimer.txt to all the .m files in a folder.  I tried the following:  text=$(cat ./disclaimer.txt)  for f in ./*.m do    sed -i '1i $text' $f done   but it just prepends an empty line.


Here's a quickie:  Let $r\ge2$. Does every connected $r$-regular bipartite graph contain a Hamiltonian cycle?  I've been playing around with this for almost an hour, but I can't prove it.


Convert SQL datetime to string or Date object

I'm trying to get this SQL datetime (yyyy-MM-ddTHH:mm:ssZ) to be somewhat readable. (perhaps yyyy-MM-dd HH:mm)  Now it displays like this:     2011-10-28T11:03:52Z   I'm really confused on how to display it like this     2011-10-28 11:03   I got this html snippet.

   I got this javascript  GET('/API/item,         function (items, textStatus, request) {             var invoiceeModel =                 contracts.map(function (data) {                     return {                         updated_time: ko.observable(data.updated_time)                     };         });   Pointers, tips and code-snippets are warmly welcome!


reduce my 90gb collection of mp3 to about 10gb

got an insanely simple and working script already: #!/bin/bash -x  mkdir .before mkdir .error for i in *.m??; do         ffmpeg -n -i "$i" -b:a 16k "${i%.*}.opus" && mv "$i" .before/         mv "$i" .error/ done  echo zzz finished $TITLE | termux-notification termux-vibrate -f  of course the important command is just ffmpeg there, but just keep in mind my context, please. termux. android only. simplicity... and immensely reducing my music collection size! everything works fine with this... except for my minor issue of the week: the album art is lost! there are many questions in sen dealing with this, and  it's actually way more complicated than it may appear at first sight. the only proclaimed solution i could find so far is a script from 2014 which doesn't handle opus:  can you help me keeping this simple? or else, i will just output it to a image file of same name and deal with it another year. 😒 edit:  doesn't really answer the question. it solves the album, but i can't find a configuration with opusenc which keeps the file at 10%. setting the same bitrate (16k) gets it to 20% at best.


I am trying to use the choice.js library inside a lightning component handling select HTML Element.  I think there might be a conflict with the LockerService but there is no error displayed on the page or in the HTML.  Is there a way to know if this library is LockerService compliant ?


I am attempting to set up phpmyadmin on my Ubuntu 18.04.1 LTS Dedicated Server but seem to be running into an issue of the page displaying plain PHP Code.  I've searched around and tried some suggestions but nothing seems to be working.  I am running the following PHP Version  PHP 7.2.10-0ubuntu0.18.04.1 (cli) (built: Sep 13 2018 13:45:02) ( NTS ) Copyright (c) 1997-2018 The PHP Group Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies with Zend OPcache v7.2.10-0ubuntu0.18.04.1, Copyright (c) 1999-2018, by Zend  Technologies   and this is what I get (it's not the full page of what I get, I can post the full page if you need me to):  <?php     /* vim: set expandtab sw=4 ts=4 sts=4: */ /**  * Main loader script  *  * @package PhpMyAdmin  */ use PMA\libraries\RecentFavoriteTable;  /**  * Gets some core libraries and displays a top message if required  */ require_once 'libraries/common.inc.php';  /**  * display Git revision if requested  */ require_once 'libraries/display_git_revision.lib.php';  /**  * pass variables to child pages  */ $drops = array(     'lang',     'server',     'collation_connection',     'db',     'table' ); foreach ($drops as $each_drop) {     if (array_key_exists($each_drop, $_GET)) {         unset($_GET[$each_drop]);     } } unset($drops, $each_drop);  /*  * Black list of all scripts to which front-end must submit data.  * Such scripts must not be loaded on home page.  *  */ $target_blacklist = array (     'import.php', 'export.php' );  // If we have a valid target, let's load that script instead if (! empty($_REQUEST['target'])     && is_string($_REQUEST['target'])     && ! preg_match('/^index/', $_REQUEST['target'])     && ! in_array($_REQUEST['target'], $target_blacklist)     && in_array($_REQUEST['target'], $goto_whitelist) ) {     include $_REQUEST['target'];     exit; }  if (isset($_REQUEST['ajax_request']) && ! empty($_REQUEST['access_time'])) {     exit; }


When a semigroup can be embedded into a group

Under what assumptions can a semigroup $(S,*)$ be embedded into a group?


Anyone got an explanation of what's going on? Changing code 1 to code 2 fixes the problem -although theoretically there should be no difference. (Theory hits practice like a pumpkin hitting a brick wall).    Code 1:   OutputDataGridView.DataSource = myList;     Code 2:   OutputDataGridView.DataSource = null;  OutputDataGridView.DataSource = myList;


Calculating dielectric constant of a dielectric sample placed inside a rectangular waveguide

Im trying to calculate the dielectric constant of a dielectric sample placed inside a rectangular waveguide over a range of frequenices. I used WR90 ( X band ).Using the s parameter data (S11 and S21), I used the Nicholson-Ross-Weir method to calculate the material parameters. But Im not getting a constant value(expected), rather Im getting wide variation in the dielectric constant. Given paper shows what i simulated in CST.


I want to share a folder between my host windows7 and guest Ubuntu but whenever I select add guest additions I get the following error:     Unable to mount the CD/DVD image   C:\PROGRA~1\Oracle\VIRTUA~1\VBoxGuestAdditions.iso on the machine   Ubuntu. Would you like to force mounting of this medium?      Could not unmount the currently mounted media/drive   (VERR_PDM_MEDIA_LOCKED).   What should I do?  I got the following message on the terminal: ... Building the main guest additions module...done! Building the shared folder support module....fail!  Atleast tell me how I can enable copy and paste between the host and guest. I have changed the settings to bidirectional but still the copy/paste is not working


Prove or disprove convergence of $\sum \frac{1}{n \ln^2 n}$

I don't know how to prove or disprove convergence of the following. Which convergence test do I need to use?  $$\sum_{n=1}^{\infty} \frac{1}{n\ln^2n}$$


Why is the resistor attached to "postive" terminal?

Alright so as I am learning this I have learned that electrons are arracted to the postive side.  So when I seen this photo it confused me why the resistor is on the postive terminal side. (When electricity flows from negative to postive [at least from what I read])    So I've researched a lot and some people say batteries travel from postive to negative and others say they travel from negative to postive.  So here is my what I think:  The energy is flowing from the postive to negative: It limits it to the correct voltage to not damage the LED.  Or  The energy is flowing from the negative to postive and this example is showing the voltage pass through the LED then uses the resistor to eliminate the remaining voltage before it reaches the postive terminal. (Doesn't make sense to me much)  By the way can someone tell me how a resistor would prevent a battery from shorting out?


Proofs involving $ (A\setminus B) \cup (A \cap B)$

Give short arguments for each part below to complete the reasoning. Please do not use Venn diagrams.     a. Prove that $A = (A\setminus B) \cup (A \cap B)$.   (Hint: You should prove that $(A\setminus B)\cup (A\cap B) \subseteq A$ and vice-versa)      b. Prove that $(A \setminus B) \cap (A \cap B) = \emptyset$   (Hint: Try a proof by contradiction for this statement.).    I'm not too sure exactly where to start on this. Both statements make sense logically, but I don't know how exactly to prove them. Can anyone point me in the right direction?


In the clasic Salesforce, I have the next button type URL:      In the Opportinity view I add this button correctly and work well:    But if i change to Lightning experience.... I cant add this button to view:    The button dont appear in the options:    ¿Any can help me?  Basically I need a button that opens an external page, passing variables such as the opportune ID ...  I tried with javascript button but I have the same problem.


What is the maximum length of a HTTP cookie in different browsers? Does it differ between browsers?  Does the HTTP protocol dictate it?


A colleague of mine and I have had a discussion about filtering with checkboxes on one of our sites.   We use a number of checkboxes to allow the user to refine a search, by selecting their areas of interest when searching. By visiting the search page on our site, the user is given all available results after which a more refined search can be conducted.   The discussion is pertaining whether we should have all checkboxes selected when the user arrives to the page or not. We have seen examples of solutions in the wild, but cannot decide which one to use.   We have two groups of checkbox choices and they will contain approximately five to eight boxes each. One concern is that if all boxes are pre-checked it will be a cumbersome operation for the user to uncheck five or six boxes due to his or her being interested in just one or two of the choices.  Could it be considered a convention to have all results displayed when first arriving to the page with no boxes ticked, and then just checking the ones one want to see in the search result?


i have a Json Object in Javascript, looking like this:  { "properties": {     "processowner" : { "valueType": "text" },     "withwhat" : { "valueType": "text" },     "withwho" : { "valueType": "text" },     "processstep" : { "valueType": "text" },     "cluster" : { "valueType": "text" } }, "items": [     {         "label": "anytitle",         "processowner": ["Name"],         "withwhat": ["ben\u00f6tigtes Material","ben\u00f6tigtes Material2","ben\u00f6tigtes Material3"],         "withwho": ["Verantwortliche Person"],         "processstep": ["1. Schritt 1","2. Schritt 2","3. Schritt 3","4. Schritt 4","5. Schritt 5"],         "cluster": ["anyname"]     },     {         "label": "anytitle",         "processowner": ["Name"],         "withwhat": ["ben\u00f6tigtes Material","ben\u00f6tigtes Material2","ben\u00f6tigtes Material3"],         "withwho": ["Verantwortliche Person"],         "processstep": ["1. Schritt 1","2. Schritt 2","3. Schritt 3","4. Schritt 4","5. Schritt 5"],         "cluster": ["anyname"]     }, ........ }   What i want is only the "items" part. Looking like this:  [     {         "label": "anytitle",         "processowner": ["Name"],         "withwhat": ["ben\u00f6tigtes Material","ben\u00f6tigtes Material2","ben\u00f6tigtes Material3"],         "withwho": ["Verantwortliche Person"],         "processstep": ["1. Schritt 1","2. Schritt 2","3. Schritt 3","4. Schritt 4","5. Schritt 5"],         "cluster": ["anyname"]     },     {         "label": "anytitle",         "processowner": ["Name"],         "withwhat": ["ben\u00f6tigtes Material","ben\u00f6tigtes Material2","ben\u00f6tigtes Material3"],         "withwho": ["Verantwortliche Person"],         "processstep": ["1. Schritt 1","2. Schritt 2","3. Schritt 3","4. Schritt 4","5. Schritt 5"],         "cluster": ["anyname"]     }, ........ ]   I tried to access it with      objectname.items But i always get "undefined" when printing out on console.   edit:  function getJSON() { var req = https.get(options, function(response) {       // handle the response       var res_data = '';       response.on('data', function(chunk) {         res_data += chunk;       });       response.on('end', function() {             var wikiJSON = res_data;             console.log(wikiJSON.items);       });     });     req.on('error', function(e) {       console.log("Got error: " + e.message);     });     req.end();                 }


How do spell/magic immunity and spell/magic resistance work in 5th edition?

How do spell/magic resistance and spell/magic immunity work?  Per the PHB (p. 197) rules on damage resistance:     If a creature or an object has resistance to a damage type, damage of that type is halved against it.   So perhaps spell resistance halves damage from spells. Does spell resistance confer protection against non-damaging effects? Does it help with saving throws against charms or web, for example? What about spell immunity?  Per the MM (p. 8) rules on vulnerabilities, resistances and immunities:     Some creatures have vulnerability, resistance, or immunity to certain types of damage... If a creature is immune to a game effect that isn't considered damage or a condition, it has a special trait.   This is a bit sparse.  Aside from the PHB rules above on damage resistance, I can't find any reference to immunities or resistances in the indices of the DMG, PHB, or MM.  EDIT: Following up on Oblivious Sage's comment below: a number of entries in the MM aside from the Tarrasque have "magic resistance" as an ability, notably more powerful devils, demons, angels, etc. These are consistently of the "Advantage on saving throws versus spells and other magical effects."


I am writing a book using times font. It has MATLAB codes. I have used the listing package for generating matlab code in latex. For the remaining text I am using times package. But while trying to publish the book I am getting the error helvetica package not embedded. I do not want to use helvetica font as the publisher has a problem with that font. Can someone explain what is font embedding and how can I remove the Helvetica font.


How do I connect to the wifi in Ubuntu within my Virtual Machine?

I have a virtual machine installed on my Windows 8.1 laptop with Ubuntu installed on it, but when I open the Network menu it doesn't show any wireless networks. How do I connect Ubuntu in my virtual machine to a wireless network that my host machine is detecting?


default repository doesn''t have release file

i know that there were a few similar question but my problem is a little bigger - one of (i think) preinstalled repositories throws me this error when trying to update/refreshing synaptic : The repository 'http://ppa.launchpad.net/deadsnakes/ppa/ubuntu hirsute Release' does not have a Release file.  am i have to contact canonical or this isn't one of defaults? i'm not looking always at url when adding repo... and this stops updater (i just think that there is already update)


No "Login using Google" option in Android app

I registered this ID with my Gmail account, and logged in successfully via web browser. However, while I was trying to log in on the Stack Exchange app in my Android Phone, I don't see any option to log in with Google:    I was told that no user was found with my Gmail account. It is amazing that I can log in via web browser, but cannot do so with the same Gmail account via app. How can I do that?  Just to compare, here is a "normal" login screen of another user:    Where did the Google login go and how can I bring it back?  My app version is 1.0.73, phone is Coolpad 8150D with Android version 4.0.3, kernel 3.0.8.


My render is complete gray or transparent

My render view is completely gray and I don't know why.    Gray render view.


Why is Greece not called in English by the name Hellas?

The Greeks call their country Hellas and themselves Hellenes.   The names Greece and Greek are of Roman origin and were adopted from Latin Graecus into old High German as Crêch and then in all Germanic languages the name was fashioned after the Latin -  Old English Grécas. (See OED extract below)  It has been the policy of the international community for many years to name new countries, (and rename old ones), to correspond with the way they are known to their own government and population. Thus Abyssinia became Ethiopia, the Gold Coast became Ghana, Rhodesia became (after partition) Zambia and Zimbabwe. (For a more complete list of name changes go to .)   Since there may be some evidence that it was only colonists (presumably from Rome to Euboea) that assigned the name Greece, why do we continue to use that name and why not Hellas?  After all we no longer refer to the USA as The thirteen colonies.        Forms:  pl.OE Cré(a)cas, Gré(a)cas, ME Greckes, Orm. Grickess, ME   Greks, Grekis, ME Grekys... (Show More) Etymology:  In branch I: The   Old English Crécas plural, corresponds to Old High German Chrêch ,   Chriech (Middle High German Kriech ), Gothic Krêks < *Krêko-z , an   early Germanic adoption of Latin Graecus , plural Graecī (see below),   the name applied by the Romans to the people called by themselves   Ἕλληνες . The substitution of k for g is commonly accounted for by the   supposition that the Germanic initial g , when the word was adopted,   still retained its original pronunciation /ɣ/ , so that k would be the   Germanic sound nearest to the Latin g . In all the Germanic languages   the word was ultimately refashioned after Latin, with change of k into   g ; hence Old English Grécas plural beside Crécas , Middle Dutch   Grieke (Dutch Griek ), modern German Grieche , Old Norse Grikkir ,   plural. In branch II the noun is an absolute use of Greek adj. The   Latin Graecī is < Greek Γραικοί, said by Aristotle ( Meteor. i. xiv)   to have been the prehistoric name of the Hellenes in their original   seats in Epirus. The word is apparently an adjectival derivative of   Graius, which is used in Latin as a poetical synonym of Graecus.   Recent scholars think the name may have been brought to Italy by   colonists from Euboea, where there is some evidence of its having   existed: see Busolt Gr. Gesch. I.2 198. (Show Less)  I.


In $\Delta ABC$ if $a^2+b^2+c^2-ac-\sqrt{3}ab=0$ Then Prove that Triangle is Right angled

In $\Delta ABC$ if $$a^2+b^2+c^2-ac-\sqrt{3}ab=0$$ Then Prove that Triangle is Right angled  I tried in this way:  Multiplying with $2$ both sides we get  $$2a^2+2b^2+2c^2-2ac-2\sqrt{3}ab=0$$    $$(a-c)^2+(a-\sqrt{3}b)^2+c^2=b^2$$  Also  $$(a-c)^2+(b-\sqrt{3}a)^2+c^2=2a^2-b^2$$  How to proceed?


How do companies benefit from increase of shares value in the stock market?

I am completely ignorant on the subject and am trying to understand the fundamentals of finance in order to better understand some topics for example how the exchange market works. This is what I understood: if a company is listed on the stock exchange, it issues shares, for example 100 shares at a value of 1 euro each. If I buy a share I "own" 1% of the company and the dividends will be proportional to the number of shares I own (I assume). Problem # 1: If the value of the stock I own increases due to demand, what benefit does the company get? After all, it made 1 euro from my initial purchase and it is not affected by the fact that I can sell my share to someone else at a higher price. Problem n2: a possible answer to my question is that the company can place new shares on the market that will be purchased at a higher price than the initial 1 euro given the higher demand. In this case, however, I would "own" less than 1% of the company as more people have bought it. Consequently my dividends could be lower, forcing me to sell the shares to maximize the profit. And this does not really make sense to me to be honest, as it would generate negative feedback. Would anyone be kind enough to explain to me what am I wrong with my reasoning?


Is it possible to compute $x^{1389}+(1/x)^{1389}$ from some premises?

Suppose that we have $ x+(1/x)=1$, can we compute the expression $x^{1389}+(1/x)^{1389}$ from that? and how?


Will a user who only asks questions get banned by the system?

I really want to answer others' questions, to make a sacrifice at Jon Skeet's altar contribute to the Stack Exchange community, but what I know is so trivial, and I can't really do anything.  I see in in the Help Center     Stack Exchange has automatic filters in place to ban questions from accounts that have contributed many low-quality questions in the past. These filters help keep the quality of our sites high.    Will a user like me, who only asks question get banned by the system?


Tension of a string on a rotating sphere and under the influence of gravity

I was studying about circular motion and found a topic that is apparent weight and found an equation of apparent value of g.      But I can't understand why this is written


Will I have problems installing multiple desktop environments?

I currently have Unity and Gnome 3.6 installed on my computer and I want to check out the KDE desktop environment. Is there any problem with installing multiple desktop environments on my desktop?


wrap around task environment not working

I am trying to create an environment wrapping a task environment (from the tasks package). To build the new environment I am using the xparse package.  \documentclass{article}  \usepackage{xparse} \usepackage{tasks}  \NewTasks[% counter-format=tsk[a]), item-indent=0pt, after-item-skip=0pt, %label-offset=0.1em ]{aaaa}   \DeclareDocumentEnvironment{bbbb}{} {%     \begin{aaaa} }{%     \end{aaaa} }%  \begin{document} \begin{bbbb}   \task first   \task secod \end{bbbb} \end{document}   But when I compile I got the error:  ERROR: LaTeX Error: \begin{aaaa} on input line 23 ended by \end{bbbb}.  --- TeX said ---  See the LaTeX manual or LaTeX Companion for explanation. Type  H <return>  for immediate help.  ...                                                l.25 \end{bbbb}   It seems that tne \DeclareDocumentEnvironemnt is not working fine in this case.


Double boot doesn't work - Windows 10 / Ubuntu 14.04

i bought this new notebook (Acer E5-573G-58B7) with Windows 10. I'm trying to install Ubuntu and make a dual boot, so I followed this steps:   Download Ubuntu 14.04.03 LTS; Use one USB to make a boot device; Shrink my HD with other partition to install Ubuntu; Restart Windows and boot on USB; Install Ubuntu in the partition made before;   Untill now, no problems. The problem comes now.  When i restart my notebook it just go right to Windows, without GRUB or something, i searched a lot, and already disable SECURE BOOT and everything. And even if i hit F12 when computer starts to boot menu, that screen doesn't show the Ubunutu partition to select and i cant choose Ubuntu to start anyway.


If G is a group, prove that $(ab)^n =a^nb^n$ implies G is abelian.

I need to prove the equivalence of the following two statements, if $G$ is a group:     $G$ is abelian $\Leftrightarrow$  for each $a,b$ in $G$: $(ab)^n = a^n b^n$ for each integer $n$   I have done the $\Rightarrow$ implication, but I have no idea how to approach $\Leftarrow$, any hints are very welcome.


Good day ladies and gentlemen, I wonder how hard would it be to implement the possibility of accepting multiple answers, IT-wise. It arguably does happen that there is more than one good answer and there is no reasonable way to say that one is better than another. Accepting just one (usually based on throwing an n-sided die) because system doesn't allow you otherwise, is a solution I'd call a hack, were I programming it :)  Of course, this question is not terribly important, so feel free to close. But I think it would make things go more smoothly on many occasions. It might also lower the number of requests for community wiki (which usually arise because someone yells "There is no correct answer here!!!").     Is it worthwhile to try to implement the feature of being able to select multiple correct answers?   Relatedly, is there a discussion anywhere whether it would not make sense to alter voting/accepting system (in whatever way)? We are all familiar with 3pt answer being accepted and 100pt crawling somewhere under it (which is especially sad state of affairs when the 3pt answer is long). Or is everybody just so used to all these quirks you don't care anymore? :)


How to recursively add zeroes to a file name

I have a folder with these files:  03.jpg 04.jpg 05.jpg 99.jpg   I want to rename these files to  003.jpg 004.jpg 005.jpg 099.jpg   by using a bash script. How can I do this?


Adding words to links generated by hyperref

\documentclass{article} \usepackage{hyperref} \usepackage{lipsum} \usepackage{polski} \begin{document} \begin{figure} . \caption{A figure} \label{fff} \end{figure} \lipsum[1]  Rysunek~\ref{fff} jest zabawny, bo na rysunku~\ref{fff} nic nie ma. \end{document}   In this sample, a clickable link is added to output PDF for 1 and 1. I want to be able to change them to Rysunek 1 and rysunku 1. I want to be able to put any other text + number of the figure into a hyperlink. The word rysunek can't be set in preamble as a default because there is a declension in Polish. The same question goes for tables, listings, equations, pages (pageref) etc (basically any reference).  HTML equivalent of my MWE:    Rysunek <href="fff">1 jest zabawny, bo na rysunku 1 nic nie ma.   I want it to be:    <href="fff">Rysunek 1 jest zabawny, bo na rysunku 1 nic nie ma.


If atoms are mostly vacuum, why are things so rigid around us?

I can't say confidently that an atom is mostly vacuum, but I am somewhat sure of it because electrons and nucleons cover little space, and everything other than these elementary particles in an atom is vacuum.  Why is everything around us rigid even if the atom is mostly vacuum?  EDIT  The question over which this question is marked duplicate has a completely different premise as compared to this question as this question asks about rigidity of materials around us rather than interaction between things around us and their subsequent behavior that they do not pass through each other.


It's clear that Marty first met the 1955 version of Doc by tracking his house down in the phone directory. However, earlier in the film, they are shown to have quite a strong relationship. Doc is happy with Marty coming into his house and even invites him to let himself in.     Doc: This is very important. I forgot my video camera. Can you stop by and pick it up on your way to the Mall?   The fact that they spend time together seems to be common knowledge, to the extent that even the principal of Marty's school says that Marty is "still hanging around" with Doc.     Strickland: Am I to understand that you are still hanging around with Doctor Emmett Brown, McFly?   But how did they get to know each other initially? Their hardly of a similar age and Marty doesn't seem to have any real interest in science or Doc's inventions. Why would he be involved with Doc in the first place?


I have this string:   pass__ = 'HSSSTS00008\4Tech'   However, printing this return this format:  'HSSSTS00008\x04Tech'   Therefore I'd like to remove the special character x and having the same value as pass__ after printing it, since this is a validation for an authentication layer.


site doesn't appear on google search in different countries

i have a site, nartrade.az which is indexed by google. it appears on google search in my country(Azerbaijan). but when i search from different countries(i.e Turkey) on google, it doesn't appear on google search. what could cause this issue? and how can i solve this issue?


Mathematica gives: $$S= -\frac{1}{12}\pi^2\log(2)+\frac{\log(2)^3}{6}+ \frac{7}{8}\zeta(3)$$  How can I prove it?