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I've run into an argument with some peers about how to perform power operations on languages. Say: A = {2,00} At first myself and my peers were all in agreement that say for instance A^3 would output: A = AAA...

I recently downloaded the official centos/7 Vagrant Cloud VM. While trying to access its GRUB2 menu during a reboot via the e key, I ran into a prompt for a username + password. I was unsuccessful in finding this referred...

How to draw $y^4 - y^2 = x$?

Charles 07/22/2018 at 20:25. 2 answers, 37 views tikz-pgf pgfplots tikz-styles
I am having some trouble to draw the equation $y^4 - y^2 = x$. Can someone help me? Thanks a lot!

Consider the middle-thirds Cantor set in $[0,1]$. I want to identify points in the following way. First, identify the two points $1/3$ and $2/3$. Then, idenfity $1/9$ with $2/9$, and also identify $7/9$ with $8/9$. At the third step there...

I used a slow approach, namely, executing $ ps | grep bash | grep -oP '/[0-9]+' | grep -oP '[0-9]+' What's a better way of accomplishing the same thing?

How does the baton move up and down and at a curve to determine the time signature? What are the different movement patterns for 2/2, 3/2, 2/4, 3/4 and 4/4 time?

I am working a lot with hatted indices such that \( \hat{\mu} \) A way to make this quicker would be to define the command. \newcommand{\hmu}{\hat{\mu}} but I would need to do this for pretty much every Greek letter separately....

I tend to have a lot of trouble with the partial on spout lore. The text reads: On a 7–9 the GM will only tell you something interesting—it’s on you to make it useful. However I have trouble telling the...

Pre- and post-measurements have been taken in 3 different conditions, and I was wondering if a paired t-test would be an appropriate statistical analysis to use?

I am relatively new to guitar, having started some three months ago, with daily practice of about two to three hours. Having advanced past the nitty-gritty of the early beginner stages (at least according to the online course I follow...

I am running a Ratchet WebSocketServer in my backend this is all working fine. <?php require '../vendor/autoload.php'; use Ratchet\WebSocket\WsServer; use Ratchet\Http\HttpServer; $wsServer = new WsServer(new Chat()); $wsServer->disableVersion(0); $server = \Ratchet\Server\IoServer::factory( new HttpServer( $wsServer ), 8080 ); $server->run(); But I want...

I don't understand in the example below: If $k \geq n$, then the determinant variety is the whole space ?

MWE: \documentclass{book} \usepackage{amsthm} \usepackage{enumitem} \usepackage{xparse} \usepackage{hyperref} \usepackage{lipsum} \newtheoremstyle{fctaylor}% name {\topsep}% Space above {\topsep}% Space below {\normalfont}% Body font {}% Indent amount (empty = no indent, \parindent = para indent) {\bfseries}% Thm head font {}% Punctuation after thm head {0pt}% Space...

I am not an expert in bash and I have troubles in filtering out the correct substring. I have echo "AT^SYSCFGEX=\\\"0201\\\",3fffffff,2,4,7fffffffffffffff,," that results as AT^SYSCFGEX=\"0201\",3fffffff,2,4,7fffffffffffffff,, How can I get 0201 as the result? I am struggling with that....

In the definition of UFD, there are two parts: existence and uniqueness. It is well-understood that the uniqueness property is useful e.g. $\mathbb{Z}[\sqrt{-5}]$. But isn't it true that every integral domain must satisfy the existence property? Existence: Each element in...

I understand this question can be strang, but how do I pick the final random_seed for my classifier? Below is an example code. It uses the SGDClassifier from SKlearn on the iris dataset, and GridSearchCV to find the best random_state:...

I would like to draw a line that is similar to the one shown. Now I do something like this. Can someone help me ? Thank you! \documentclass[border=3pt]{standalone} \usepackage{tikz} \usepackage{pgfplots} \begin{document} \begin{tikzpicture}[scale=0.95] \begin{axis}[ width=9.5cm, height=5.5cm, ymin=0.0,ymax=1.0, ytick={0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0}, ymajorgrids=true, grid style=dashed,...

Twisted Cylinder

quiliup 07/22/2018 at 14:12. 1 answers, 19 views mesh transforms topology geometry
I want to create a mesh like this: with a vertex on every edge-crossing so that every face is kite (nearly rhombus) shaped. The above image was created just by rotating the top of two cylinders in different directions and...

I need a breakdown of the item costs: Base price Mithral +1 Enchantment I’ve read that there have been conflicting prices between the Core Rulebook and Ultimate Equipment.

Are Christians, Muslims, Samaritans, Bahais, etc considered Noachide, and do they have a part in the world to come? What about Karaite and Falasha Jews?

I'm running my own DigitalOcean Droplet on Ubuntu. Today, I found that my SFTP connection to said Droplet was a little laggy when doing work on it, so I checked /var/log/auth.log files to see what was happening. I saw that...

I want to build a mini fridge, however, I want to build it a bigger than the ones showed in the tutorials I've watched. For that I assume I need more than one peltier to cool it. However, for that...

Grandpa was waiting impatiently in the Waiting area of Yale Hospital in Connecticut US. It was past midnight. His second daughter was giving birth to her first child (C-section). His son-in-law came out of OR and told him happily that...

I'm creating this character that has the ability to replicate herself. Her power works like this: She can make a perfect copy of herself, which means that even her memories, thoughts and feelings are exactly the same in the exact...

How to find files with a specific pattern in the parent and child directory of my present working directory using a single command ? Filename - test.txt, the file has the pattern nslookup This file is present in 3 directories...

Charged particles

Sal.Cognato 07/22/2018 at 12:29. 1 answers, 36 views probability
We are creating a circular hub consisting of charged 0 and 1 particles next to each other, beginning with four of them: 0, 1, -0 and -1 in this order. Every 1 sec we randomly select one of each...

When is it acceptable to kill a character? (and if possible, when is it most appropriate?) BTW, I'm not talking just about a protagonist; I'm talking about any of my characters, whether they're MCs or extras is irrelevant.

Help with tikzcd

Emma 07/22/2018 at 12:21. 2 answers, 21 views tikz-pgf displaystyle
So Im having a little problem with a tikzcd-figure in my Thesis. It looks very 'squeezed' - if you understand. Can anyone help? I can simply not get it to look right \[ \begin{tikzcd}[row sep=huge, column sep=small] & Finanspolitisk\,disciplin \arrow[dash]{dr}{[Den\,liberale\,model]}...

A while ago, I asked if there any possible way for my series to avoid causing Darkness Induced Audience Apathy. A well thought-out response stated that unless I give my readers a reason to care about my protagonist (due to...

Calculate the line integral of $ \int_{C} xy\,dx + 2y^2\,dy $, where C is composed of two parts: the arc of the circle from $ (2,0) $ to $ (0,2)$ and the line segment from $ (0,2) $to $ (0,0)...

I'm playing in a seven member party in a homebrew campaign. There's a chain warlock (me), a vengeance paladin, a valor bard, a fighter, a trickery cleric and two Circle of the Moon druids. We're on our 9th session and...

What is gap $\log(n+1)-\log(n)$ between log of consecutive integers? That is what precision of logarithms determines integers correctly?

Distances and speeds

Nhung Huyen 07/22/2018 at 11:33. 1 answers, 31 views arithmetic
Alice and Bob started to walk towards each other’s home and then back to theirs, with steady speeds. Alice passed by a bus station at 25 m away from her home, while at the same time Bob was passing...

I observed that if $$A = \begin{bmatrix} a & b \\ c & d \end{bmatrix}$$ with non-zero eigenvalues $\alpha$ and $\beta$, then $$\begin{bmatrix} A & A\\ A & A \end{bmatrix}$$ has eigenvalues $2 \alpha$, $2 \beta$, and $0$. Also, $$\begin{bmatrix}...

I need a way to find out what font sizes were used in a psd document, similar to this, but for font sizes. It would be great if this way or script is compatible with older versions of PS, like...

How would you complete the pattern?

Pieter Rousseau 07/22/2018 at 11:00. 1 answers, 24 views pattern
How would you complete this pattern?

\documentclass{book} \usepackage{tikz,amsmath,amssymb,tkz-euclide} \usetkzobj{all} \usepackage{color} \usetikzlibrary{positioning}% To get more advances positioning options \usetikzlibrary{arrows}% To get more arrow heads \usepackage{amsthm,color} \usetikzlibrary{arrows,plotmarks} \usetikzlibrary{quotes,angles} \theoremstyle{definition} \newtheorem{exinn}{Example}[chapter] \newenvironment{example} {\clubpenalty=10000 \begin{exinn}% \mbox{}% {\color{blue}\leaders\hrule height .8ex depth \dimexpr-.8ex+0.8pt\relax\hfill}% \mbox{}\linebreak\ignorespaces} {\par\kern2ex\hrule\end{exinn}} \begin{document} \chapter{Chapter One} \section{Section One} \begin{tikzpicture} \draw[blue,...

When reality is unrealistic

Galastel 07/22/2018 at 10:47. 3 answers, 17 views fiction realism
Readers have certain expectations about locations and time periods, things they "know". For example, people "know" that everybody in the Persian Empire was brown-skinned, that houses in Ancient Rome were one or two floors high, and that up until the...

What does `nowritebackup` actually do?

john c. j. 07/22/2018 at 10:22. 2 answers, 13 views vimrc backup
I hear somewhere that if backup is disabled and writebackup is enabled, Vim will create backup files for the duration of the edit session and will delete these backup files afterward. However, even with these settings, i.e. set nobackup set...

I've been thinking, could there possibly be an organism that is based on the element of helium? If yes, what would it look like? (Images are welcome)

I am currently studying how transistors react and behave to simple signals. I have the following circuit: A square wave of approximately 83kHz is applied. The transistor used is a 2N5551. The resistor values were carefully chosen to try to...

Q1. How do I get the Issued by and Issued in on my passport? Note I have a Nigeria passport and it only has Authority, which is ABUJA HQRS. I am planing on visiting a friend in Germany for 34...

I'm working on a large C++ project. While testing it, I frequently get a core dumped from the main process. This produces a lot of uninteresting core dumps saved within systemd and it takes useful disk space. Is it possible...

I’m writing a science fiction type short story set in Germany (actually Stuttgart). To some extent the location isn’t that important- it could be set anywhere but setting it there appeals to me and gives the story a unique aspect....

Some people argue that Iota is centralised because of the use of a coordinator to issue milestones which, in turn, are used as a root of trust to verify transactions. What would happen to the network (with the current IRI)...

I have some data being shown in a DataGrid. The data comes from SQL, where a "money" type can be null. When i display this data, all is OK when i format the data in a double column format as...

Is "Dragons" an appropriately narrow category for the background skill Lore?

As far as I know 汉语课 (along with 中文课) means only "Chinese class" = "a class for learning Chinese" (and it may be in English, Chinese, or any other language). I'm wondering how to succinctly say "a class in Chinese",...

Let $\mathbb{B}$ be a boolean algebra. Then we know that $\mathbb{B}$ is isomorphic to an algebra of sets, viz. ${h:\mathbb{B}\longrightarrow \mathrm{Clopen}(\mathrm{Ult}(\mathbb{B}))\subseteq\wp(\mathrm{Ult}(\mathbb{B}))}$ via $h(b)=U_{b}=\{\mathfrak{F}\in\mathrm{Ult}(\mathbb{B})\mid b\in\mathfrak{F}\}$. I want to know, whether there is a powerset algebra $\wp(X)$ and an epimorphism, ${g:\wp(X)\longrightarrow\mathbb{B}}$. This...

Is every complete Boolean algebra isomorphic to a quotient, as a Boolean algebra, of some powerset algebra $\wp(X)$? It is not true for arbitrary Boolean algebras, see the comments, or see my MathSE question. I am also aware of the...

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