If this has been asked, I could not find it. My Sorcerer has the sword burst cantrip, and I'm thinking of taking the 'Distant Spell' metamagic option. Will it change the range to 10 feet? Similar to Metamagic Distant Spell and AoE spells but not quite answered, though Crawford's tweet seems to i...

What are the major benefits of the method of the reduction formula?? Aside from the fact that it is fast. Does it really have any advantages over integration by parts and other forms of integration in terms of accuracy?

Consider an ascension of a single rope with an ATC guide in locking mode and a foot loop with a friction hitch, as described in this answer: Quickest / most efficient way to ascend a hanging rope with rock climbing gear? Now assume the ascent has ended mid-rope (i.e. no stable anchor to hook ...

"This innovative Canadian TV comedy will soon become the talk of Paris once again." I'd like to know, when a certain TV star or program, or a scandalous politician or company is expected to become the center of attention, in a positive way or negative way, in a certain country or city and most p...

EDIT: Raw data can be found here: https://gist.github.com/Kagaratsch/65a931d8d78fcdd81f7e346429a02afd Consider the following binned example data: hl={{-(153/400), 1}, {-(151/400), 0}, {-(149/400), 0}, {-(147/400), 0}, {-(29/80), 0}, {-(143/400), 0}, {-(141/400), 0}, {-(139/400), 0}, {-(137/400)...

If a digit is written as $3.\dot{3}$, what level of infinity do the dots continue on for? Can this be proven to be true, or is it just a quirk of the notation? More specifically, $1/3$ can obviously be broken up like $$\sum^{\infty}_{n=0}{\frac{3}{10^n}}$$ However, I'm wondering what $\infty$ ...

The following is often used to set file permissions, a good example being setting a key file to an appropriate permission level to be used by ssh (this being the "octal" form): chmod 400 filename.xyz Would it be a correct equivalent and acceptable practice to use the following instead (this is...

I was trying to create a function that loops over inputs and executes a command - regardless of how they are delimited. function loop { # Args # 1: Command # 2: Inputs for input in "$2" ; do $1 $input done } declare -a arr=("1" "2" "3") ...

Quite some time ago I have created the Simple object validator (see also self-answer). The more I used it the more I thougt its API could be better so I have heavily refactored it and would like to you take another look at the new version. Requirements I'd like my validator to be: intuitive e...

Is there a LaTeX command (and package) by which I can put out of focus the resulting pdf output so that this won't be so terribly sharp when printed with a 1200x1200dpi printer? I.e. how do I enclose entire content between \begin{document} ....TEXT \end{document} into a command directing to put ...

First of all I'm not even sure if the sentence I'm using as an example is correctly formulated. Even a seach for "I was at the church last Sunday" on Google gave me only three results so I think it's not very usual, maybe even wrong, but I don't know a better way to say it. Ok, here's my questio...

I would like to get Mathematica to do some tedious algebra for me, but I have been unsuccessful so far, and I don't know whether I am not using it correctly or whether it is simply not sophisticated enough, so I would like to know if there is a way to make Mathematica find these closed forms "on ...

Hubble has no thrusters, but it is large enough to have nontrivial gravity gradient and tidal forces acting on it. This would induce a torque that has to be cancelled by its reaction wheels. If I understand it correctly, this extra momentum, now stored in the wheels, would have to be dumped som...

Next week, I am landing in Paris CDG airport and an hour later I have to be at Gare du Nord. Therefore, I wanted to buy a ticket in advance to get from the airport to Gare du Nord as quickly as possible without having to buy a ticket first. Here is what I did: Googled and found this https://ww...

Darth Sidious had red-robed bodyguards on his shuttle and in his throne room. Why would a Sith Lord need bodyguards? He is an evil space wizard who can read minds, choke the life out of somebody just by talking to them during a video chat, and levitate multiple enemies during combat. People wit...

I am trying to compile the following program: pragma solidity ^0.5.1; contract MKotET1_1{ address payable king; uint public claimPrice = 100; function calculateCompensation() public returns(uint) { } function( ) external payable { if (msg.value < claimPrice) revert();...

If I ask bash to echo the -1th argument it prints hb1: echo $-1 hb1 Why? What is it accessing?

According to the Wikipedia Page on amorphous sets, no amorphous set can be totally ordered. If I am correct, this states that every infinite totally ordered set has two disjoint infinite subsets, but I am not sure how to go about proving it in ZF (if it is even provable in ZF), although here's my...

Suppose we have a solved sudoku, which was started from a minimal set of clues to its unique solution, i.e. 17+ numbers in specific locations, which we'll call set1. Is there a set2, (or set3, etc.), with few or no elements in common with set1? Put another way, suppose you have Monday and Tuesd...

The Riemann tensor is skew-symmetric in its first and last pair of indices, i.e., \begin{align} R_{abcd} = -R_{abdc} = -R_{bacd} \end{align} Can I simply use this to say that, for example, the component $R_{0001} = 0$ because $R_{0001} = -R_{0001}$?

Should I declare the item I'm bringing to Australia; even though it is made out of faux wood? It is not actual wood and does not fall into the category of wooden goods as I just checked (it is actually made out of an artificial resin); however, it very convincingly looks like wood. I have the o...

At around 1:44 of the acoustic cover of Taekwondo by "Walk of the Earth", the musicians play a blowing instrument. What instrument is this?

I currently have islands that look like this: And I want to procedurally subdivide it into regions, like this: What algorithm does what I'm looking for? Do you have suggestions on how to create coherent regions like in the bottom picture. Your help is appreciated.

Is it possible to set Emacs start-up command-line flags such as -nw and -q in an init file? If it is, how can I do that?

The following code is given: \begin{alignat*}{3} h(0) & = g_s(0) - g_s(0 - 1) = 0.25 & - 0.00 & = \nicefrac{1}{4}\\ h(1) & = g_s(1) - g_s(1 - 1) = 0.50 & - 0.25 & = \nicefrac{1}{4}\\ h(2) & = g_s(2) - g_s(2 - 1) = 0.75 & - 0.50 & = \nicefrac{1}{4}\\ h(3) & = g_s(3) - g_s(3 ...

I'm trying to set up a material that shades the topography of a spherical model of the Earth based on distance to the center of the Earth. Setting up a ColorRamp based on distance from the center of the sphere is easy: But each color in the ramp needs a different texture applied to it. In 3ds ...

I'm listening to the 40m band during Field Day and I keep hearing things like "You are THREE ALPHA in Virginia," or "do you hold me ONE ALPHA in Eastern Pennsylvania?", or "you are TWO ALPHA Maine." I have no idea what they're talking about, can someone please explain?

I read the answer by @grg to question “brew formula” installation logs: brew install <formula> 2>&1 | tee install.log So where exactly is this install.log file going to end up, and what exactly the 2>&1 | tee part of the command mean?

I am experimenting with STM32F303RE Nucleo board on SW4STM32 with FreeRTOS v10.1.1 and I was thinking of parsing NMEA sentences by adding the characters to a buffer using UART interrupt and then process them at my convenience in a task. Since most NMEA sentence parser libraries I know are written...

Here is the situation I am wondering about: My Rogue is in melee with an opponent. On his turn he disengages, and moves his full movement away from his opponent. The opponent, on their turn, uses their full movement to put themselves within 5 feet of my Rogue again, ending their turn. Can my ...

I want to prove a theorem stating: An unbiased estimator $\hat{\theta}$ of the unknown parameter $\theta$ is consistent if $V(\hat{\theta}_n$) $\to0$ for ${n\to\infty}$. I've tried using the definition of consistency which is $\lim_{n\to\infty} \mathbb{P}(|\hat{\theta}-\theta|≥ \epsilon)...

For reference, I am trying to re-create this diagram from a 1931 paper. After looking here, here, here and here I managed to generate the following: \documentclass{standalone} \usepackage{tikz} \usetikzlibrary{shapes.geometric, arrows,arrows.meta} \begin{document} \tikzstyle{circlelined} =...

I'm looking to buy a house for the first time. I've done some homework, and from what I can tell... Buying a house via mortgage in Kentucky is somewhat cheaper than renting an apartment. I need to bring my credit score to at least 630 before lenders will even talk to me. I need to finish paying...

I know how to find the region of intersection of these cylinders using integration, but how would I plot that in mathematica? This is what I have ContourPlot3D[{x^2 + y^2 == 1, x^2 + z^2 == 1, y^2 + z^2 == 1}, {x, -3, 3}, {y, -3, 3}, {z, -3, 3}, AxesLabel -> Automatic, PlotLegends -> "Expre...

For instance, the following command does not work: if [[-e xyz]]; then echo File exists;fi ksh gives the following error [[-e: command not found Is that because "[[-" is ambiguous?

I was wondering if there is any chance to plot this in LateX. It either is too challenging or it cannot be done. What tools are available in such case? More clear view:

I have an Arduino Uno. It's role is to echo back what it receives. But if I send it a stream of ascii characters it starts to error after the first one. Occasionally it gets the second character correct but often not. If I delay each character then it works ok. I couldn't see this limitation men...

Looking through my main panel today I discovered that at least 1 circuit does not appear to be attacked to any breaker. If I turn off the main breaker of the house, the circuit does turn off. How can this be?

I want to write a function to return true if T is one of Ts... template<class T, class... Ts> bool is_one_of<T, Ts...>(); For example, is_one_of<int, double, int, float> returns true and is_one_of<int, double, std::string, bool, bool> returns false. My own implementation is template<class T1...

Googling I saw several lectures saying that it is possible to sign using digital certificates. I am confused about that, because according to my knowledge it is possible to sign only using the private key, where digital certificates are used during the signature process?

I am composing a piano piece that starts out in G# minor (which is the set key) and later on I have a section that goes into E major. For that section, do I simply just change the key signature, or rather, keep the G# minor key, and just put accidentals as needed? I understand that realistically,...

I've seen the following warning printed next to all TSA checkpoints in a US airport: The Department of Homeland Security (DHS) today announced the determination that aviation security at Ninoy Aquino International Airport (MNL), which serves as a last-point-of-departure airport for flights to...

I am trying to get resemble what's on the picture: How can I draw the ellipses? mwe: \documentclass{article} \usepackage{mathtools} \usepackage{blkarray, bigstrut} \begin{document} \begin{table} \begin{tabular}{ccc} & & V1 & V2 & V3 \\ \hline U1& 6 & 2 & 2 \...

I have read that the average size of a capillary is about 8 micrometers. How is it possible that the 15 micrometer or so monocytes in blood do not block these vessels? https://en.m.wikipedia.org/wiki/Blood_vessel#Vessel_size https://www.britannica.com/science/monocyte

I am looking for a children's short story about a scientist that invents a material that is pushed away from other matter. It accelerates away from gravity instead of towards it. He makes several small (golf ball sized?) spheres of the material. He could wrap his fingers around a ball, but it wo...

The back of that wall is entirely flat, the underside of it is dug out, now if you look closely you'll see that the birch logs are placed diagonally form the fire block. Fire spreads diagonally though, so why is it not doing it here? Is this really a safe setup or is it only a matter of time b...

In Marshall (Prisoners of Geography, 2015) writes: In 1951, China annexed Tibet (another vast non-Han territory) and by then Chinese school textbook maps began to depict China as stretching even into the central Asian republics. Is the claim (in bold font) true?

I am doing research for a story I am writing. If an investigator in the late 1920s privately needed to glimpse an image that was taken on a camera, perhaps a 35mm Leica or a Naegel, would it be possible to develop the image in a makeshift darkroom, perhaps in a matter of hours? What would have b...

I want to build a .gpx file and was hoping to use gpxpy. I can see how to build such a file in memory, but I can't see how to write it out to disk. Is it possible for gpxpy to write files?

I found that an employee who is no longer with us uploaded a giant Excel file containing HR information into Slack. The file is available to anyone in our Slack and contains names of all current and former employees, their contact details, full names, who has stock options, annual leave entitleme...

In my fantasy world exists a order of monks known as the Noncara/ Non Cara (haven't decided which form looks better, :P). The Non Cara practice a theology based solely on works. By this I mean: they believe in works/deeds alone. How this manifests is the Monks renounce their form er selves, live...

If one made havdalah over wine before davening maariv, and then in maariv he forgot to say chonantanu and has already completed shemoneh esrei, would he have to go back and repeat shemoneh esrei?

If someone was creating music to fit a genre or to match a certain theme/mood would this influence their choice of which scale to use? Are some scales used more than others within a genre of music?

Code: \documentclass{article} \newcounter{mycounter} \setcounter{mycounter}{1} \begin{document} \paragraph{\arabic{mycounter}}% \stepcounter{mycounter}% \paragraph{\arabic{mycounter}}% \end{document} Expected: 1 2 Actual: 2 2 I am very confused, can someone explain what is ...

I am trying to find a way to convert a solid object fill in to millions (more or less) lines? for example: I am okay to use any tools but ideally I want output in SVG format (not necessary tho) Magnified view:

“When you only use complicated words for a while, you forget to say things the easy way.”

Lets say I have imprinted Medomai the Ageless on the Mimic Vat, have at least 3 mana and an opponent wide open for attacks. Do I get unlimited turns?

I was making a particularly difficult word wall, when I misplaced all the words for it. Luckily, I still had the clues. However, poring through the clues, I realised that I had nine clues, yet my word wall had eight? Above all, I couldn't remember the words, so I couldn't remove the faulty clue. ...

Could someone please help me understand the derivation of the relativistic Doppler effect of light for objects moving away as derived from the source's reference frame? There’s no problem for me to understand it from the receiver's reference frame but for some reason I can’t comprehend it while t...

I have recently built a 80386 system. Lacking any AT PSU I connected a PicoPSU using an ATX->AT power adapter. Only card connected was a gpu (Trident TVGA 9000i). System performed BIOS checkup sequence without errors and reached boot stage. I did not connect a MultiIO card so did not proceed to b...

I recently moved into a flat in south Germany with large, south-east-facing balcony boxes. In one of them is a very straggly-looking forsythia. It flowered in the spring, but since the leaves have come out it only has leaves at the very ends of the branches, and nowhere else (see photos). How ...

I am reading Robert Hogg's (Introduction to Mathematical Statistics) EM algorithm. In example 6.6.1 (page 370 in the 7th version), please help to explain how the following integral $$\int_a^\infty(z-\theta_0)\frac{1}{\sqrt{2\pi}}\frac{\exp \left\{{-(z-\theta_0)^2/2}\right \}}{1-\Phi(a-\theta_0...

When can “faire” be used to mean “avoir l’air” and when would you choose to use one or the other? I recently saw both ”Ça fait un peu ringard” and ”Ça fait classe” and both seem to use it to mean “That looks x”. So why was “faire” used instead of “avoir l’air”? Is it more of an informal thing?

The gravitational force in the vector form is defined as $$ \boldsymbol{F}=-\frac{GMm}{\boldsymbol {r^3}}\boldsymbol{r}$$ Many textbooks define its magnitude as $$F_g=-\frac{GMm}{r^2}$$ However, in the derivation of the gravitational potential energy $U_g=-\frac{GMm}{r}$ $$W_{by.grav}=\int_c \bo...

I've been surfing the web for quite a while, finding the answers I would need, but couldn't find a convincing one. First of all I need to remind you that this a very long/continuous question, so please kindly take your time. I'll provide some illustrations to make things easier and more pleasant ...

This question might seem absurd and illogical to many. But it just popped out in my mind while I was reading about magnetism. -Like in case of charges, positive and negative charge on an atom means absence and presence of extra electrons respectively. So my question is what aspect exactly makes...

Chagigah 3:8: כָּל הַכֵּלִים שֶׁהָיוּ בַמִּקְדָּשׁ, טְעוּנִין טְבִילָה, חוּץ מִמִּזְבַּח הַזָּהָב וּמִזְבַּח הַנְּחֹשֶׁת, מִפְּנֵי שֶׁהֵן כַּקַּרְקַע, דִּבְרֵי רַבִּי אֱלִיעֶזֶר. וַחֲכָמִים אוֹמְרִים, מִפְּנֵי שֶׁהֵן מְצֻפִּין: All the utensils that were in the veins hamikdash need immer...

As I was going through Leviathan I realized that in some places Hobbes left an article before covenant, despite not placing the word in quotation marks: 1. "God is King of all the Earth by his Power: but of his chosen people, he is King by Covenant." 2. "Again, one of the Contractors, may deliv...

The BBC News article The Five Greatest Space Hacks of All Time shows a photo of Alan Shephard on the Moon swinging an improvised gold club. Is the spot in the upper right corner of the photo a golf ball the he just hit? If not, any idea what it is? Alan Shephard improvised a gold club so he ...

The BBC News article Apollo in 50 numbers: Medicine and health says: When Apollo 16 commander John Young walked on the Moon, he shared his feelings on the new diet with his companion Charlie Duke. The comments were inadvertently relayed to mission control… and the wider world. “I have th...

The Dold-Kan correspondence between the category of simplicial abelian groups and the category of non-negatively graded chain complexes of abelian groups is a classical result. It states that the normalization functor $N$, which sends a simplicial abelian group to a normalized chain complex, poss...

His usual Monday Morning 8am class. This is for extra AAA credits. $A$, $B$, $C$ are distinct digits. $AA$, $BA$, $BBAAA$, $CBBBAB$ are distinct numbers. Please deduce these with concise reasoning from the given relation: Rearrangement of the terms in the Equation gives interesting Prime Rela...

I have seen that someone has asked a similar question a few years ago, but unfortunately the answer is not helpful. I am in the process of estimating a Wilcoxon signed rank test with a n=63 by hand. I calculate by hand to really understand all the different steps. However, now I am stuck. All c...

I saw that using the Add Curve: Extra Objects add-on, it's easy to make a spiral curve, but I also wanted to try to make one "from scratch." I tried using the screw modifier on a single vertex, but nothing rendered. I then created a line and also (by accident) an unattached vertex, and then ap...

I'm applying for a graduate visa (subclass 485) in Australia. I'm currently stuck on: Part E: International Travel / Movements Have you travelled to any country other than Australia in the last 10 years? I traveled to Europe last year with a tour. I got a Schengen visa. How should I wr...

I was writing a document. It should have ribbons like these I have searched it on youtube. But I could not find anything?

Today I had to leave my Mac, while a copy-pasting operation was in progress with a large number of files. I found myself wanting to know how long the operation had left (and if it had encountered any issues, duplicates etc.). This left me wondering, would there be a way to view this progress on a...

The second poem is an anagram of the first poem. Both poems are separated by "~" to indicate they are both anagrams of each other. The aim of all is but to nurse the life With honour, wealth, and ease, in waning age; And in this aim there is such thwarting strife, That one for all, or all fo...

Let $K$ be a field. It is easy to see that if the characteristic of $K$ is $0$ and $f(T)=\sum_{n\ge0}a_nT^n$ is a power series algebraic over $K(T)$, then $f'$ belongs to $K(T)(f)$. Indeed let $P(X)=\sum_{i=0}^lP_i(T)X^i$ be the minimal polynomial of $f$ over $K(T)$. By differentiating $P(f(T))$,...

I gathered a couple of questions together because they might be linked but I'm OK with splitting them: Why didn't Levi send a spy? I know, I know they didn't have Nahalah in Israel. So what? The two and a half tribes didn't receive Nahalah in Israel but Moses obligated them to participate in...

Say you wanted to buy some Kinder eggs in a store and had to ask for them and say : Je vais vous prendre deux œufs kinder. What would you actually say? /døzøkindɛr/ or /døzœfkindɛr/. Likewise, if on two consecutive Sundays you had eaten two bœufs bourguignons, once at your in-laws' and once...

I did the following calculations: Max current = 1.2A, Max voltage = 12V Then power = 14.4 watts = 0.019hp Rpm = HP * 5252 ÷ torque I need a torque to 2kgf-cm = 0.144 lb-ft Gives rpm= 698. Thus this means if I put load(mechanical) on the motor, it will run at 698 rpm and increase its torque to 2...

Surely I must have a misconception?

Why would zombies eat humans and not any other animals, are there any chemicals or vitamins that can only be found in human bodies and not other animals?

I have drawn a diagram using tikzpicture, but it has arrows crossing over each other. How do I keep the Horizontal arrows in each level intact and break the other arrows at the point of intersection? Here is my code: %\documentclass[reqno]{amsart} \documentclass[border=5mm]{standalone} \usepac...

I am using the Camunda macOS app and I am wondering what does this shortcut mean (right facing delete key)?

In Fulton's book "Algebraic curves - an introduction to Algebraic Geometry" (freely available from the author's web page http://www.math.lsa.umich.edu/~wfulton/CurveBook.pdf ) problem 1.23 says: Give an example of a collection $\mathscr S$ of ideals in a Noetherian ring such that no maximal membe...

Please consider the following list: There is a $(K_n)_{n\in\mathbb N}\subseteq E$ with \begin{itemize} \item $K_n$ is compact; \item $K_n\subseteq\overset\circ K_{n+1}$; and \item $d(\partial K_n,\partial K_{n+1})>0$ \end{itemize} for all $n\in\mathbb N$. This doesn't render well: ...

I came across this title on a sports website Ole Gunnar Solskjaer should follow Sir Alex Ferguson advice over Real Madrid and Paul Pogba and was wondering why there was no possessive. Ole Gunnar Solskjaer should follow Sir Alex Ferguson's advice over Real Madrid and Paul Pogba I und...

I'm confronted with the following situation: First of all nature decides which of two games is played. Then each of two players make a simultaneous move, but only player I knows which game is played. How can I display this information in extensive form? The root will be the nature, which dec...

As a Physics Degree undergraduate, I have been forced countless times to use a certain method to integrate over 3D surfaces and volumes, which my lecturers like to call integration through surface and volume elements. I can't stand this method, nor I could ever understand how to do it, especially...

My SQL Server book says you can't run a function inside EXEX and shows some example: DECLARE @NumberOfLetters int = 15; EXEC(‘SELECT LEFT(Name,’ + CAST(@NumberOfLetters AS varchar) + ‘) AS ShortName FROM Production.Product’); this doesn't work as CAST function needs to be fully resolved prio...

"Do sudoku answers always have a single minimal clue set?" No. Solved Sudoku puzzles may have more than one set of disjoint clue-sets. And those clue-sets can vary in difficulty, so one might be easy and another diabolical, even though their 81-number answers are identical. Gareth McCaughan p...

My boss requires a three column layout for a report: Column 1: All headings below sections (subsection, subsubsection, ...). Heading text should break in the first column. Column 2: The main text Column 3: References, remarks, etc. The content here should be aligned to their corresponding line ...

I'm playing a bit of hardcore and I'm building a farm. My problem is that sometimes when I go to plant one the ground refuses to take my seed. This is unacceptable! Resources are short. Sometimes walking a large distance away changes this though. So I'm wondering is this an in-game mechanic I am ...

I want that in my ubuntu, I have the same folder at two different locations. Such that, if I update something in one, it gets updated in another location too. How can make it happen?

I was surprised to see that we don't have any posts that mention the Recamán Sequence, so I figured I should post it as a challenge. By definition, $a_0=0$ and $a_n=a_{n-1}-n$ if the r.h.s. is positive and different from all previous elements, and $a_n=a_{n-1}+n$ otherwise. The first few terms ar...

I have trouble finding the symbol which indicates that two measure are not absolutely continuous i.e. the negation of $\mu \ll \nu$. Anyone has an idea how to write this? Edit 1:

I'm using siunitx to successfully align my column content along the \pm: \begin{table}[b] \centering \robustify\bfseries \begin{tabular}{ c S[detect-weight, table-format=1.1(1)]} \toprule Header1 & {Header2} \\ & {Sub} \\ ...

I am programming an Arduino. In the same .ino file as setup() and loop() I have defined the following: void setup() { // setup code } enum class CYCLE { TypeA, TypeB }; String cycleToString (CYCLE cycle) { if (cycle == CYCLE::TypeA) { return "TypeA"; } else if (cycle == CYCLE::Typ...

I think I don't understand the categorical duality principle. For instance, if you prove that a certain category has kernels, by duality principle it has cokernels. But why this doesn't apply with Grothendieck axioms for abelian categories? For example, if a category has arbitrary direct sums, wh...

According to FIDE regulations I should calculate the average of my opponents and just plug it here: https://ratings.fide.com/calculator_rp.phtml. I scored 5/9 but a couple of players didn't have rapid rating so I don't know if I should count those players as 0 points of ELO or just calculate the...

I’m doing high speed scientific imaging. I have a camera mounted in a fixed location with a Micro Nikkor 105mm lens. It’s viewing a fixed subject that has a small mirror oriented 45 degrees underneath it. This allows the camera to simultaneously view the subject from the side and the bottom. Unfo...

I have a Raspberry Pi Zero Wireless and I wish to connect it to an FPGA via SPI. I have done some SPI tests with my 100Mhz oscilloscope and see these images. The Pi correctly outputs the text "Test" using a simple C program. The SPI is running at 1Mhz. The waveforms do not look very clean a...

After updating emacs (to 25.2.2 as shipping in ubuntu 18.04) I notice a change that completely breaks my conflict resolution flow in git. Once I resolve a conflict using emacs and save the file, emacs automatically does "git add" on the file. This may seem convenient but it removes the chance to ...

Let $G$ be a discrete countable group acting on a compact, Hausdorff space $X$. Assume that the action is transitive. Namely, $G\cdot x=X$, for all $x\in X$. Does it follow that $X$ is finite? I thought that the answer should be yes, as $G\cdot x$ is then a discrete compact space, and so must b...

Can somebody explain to me the difference in usage of these three forms. Sometimes it feels as if there are cases where they are interchangeable. If you could add also some examples it would be extremely helpful.

What's the way to write or to read power (math) it in words? Does "powered by" is correct? For example: "2 powered by 5 divided by 2 powered by 3." works? Also "What 4 powered by 3 does equal to?" is correct?

I've always wondered, what are the main tactical and strategic differences between Rad1 and Rfd1 (or Rad8 and Rfd8 as black)? I know it's a subtlety, but my guess is there are some common principles that apply often.

I found this drive in one of Atari lots. Apart from few mentions in old articles I can't find any info whatsoever. Can you help please?

Imagine an agency/company has been set up to track meteors (shooting stars) in pursuit of profit. I need to provide a motivation to upgrade their sensors + equipment over and over again — pouring money into the process for promise of a bigger reward. Conventional logic might say: larger meteors...

I am interested in localisations of categories with weak equivalences and in particular in localisations of model categories at their weak equivalences. Let $\mathcal{C}$ be a category with weak equivalences. In this note (page four), David White explains how in trying to define the morphisms in...