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00:03
1
Q: My Site Disappeared from Google Search After Being Fully Indexed

Adil MohakI recently launched my website, and at first, everything seemed fine—Google indexed my pages, and they were appearing in search results. However, after a few days, my site completely disappeared from Google Search. Now, the only way I can find it is by searching with site:example.com. I haven’t m...

5
Q: In what SF short story were kidney stones of an alien species considered precious or useful to society?

JoceI guess it's a 1950s or 1960s one, but I have no clue any more where I read that. English language most probably, might be French. I think it was gradually revealed in the story that some key resource, very much used and that had a name in the story, was actually kidney stones (or gallstones, uns...

2
Q: ffmpeg - How to combine overlapping clips from single video?

anonI am trying to use ffmpeg to take a few clips from a video and combine them together, similar to this. Except that the clips come from timestamps that overlap. My command looks like this: "C:\Program Files\ffmpeg\bin\ffmpeg.exe" -y -i "C:\temp\5min.mp4" ^ -vf "select='between(t,4,6.5)+between(t,5...

DIY
DIY
00:25
2
Q: Questionable quality of epoxy floor over plywood sub floor

WhiskeyHammerI bought an older house and just had epoxy floors poured poured by a highly rated pro in my area. The end result has far more quality issues than I would have expected - and that's why I'm here, I don't know if my expectations are reasonable. This is epoxy over a wood subfloor. The goal was to us...

1
Q: What was the purpose of Yehoshua waiting alone until Moshe returned from Har Sinai?

NJMThe Torah writes Shemos (24:13-14) וַיָּ֣קָם מֹשֶׁ֔ה וִיהוֹשֻׁ֖עַ מְשָׁרְת֑וֹ וַיַּ֥עַל מֹשֶׁ֖ה אֶל־הַ֥ר הָאֱלֹהִֽים׃ וְאֶל־הַזְּקֵנִ֤ים אָמַר֙ שְׁבוּ־לָ֣נוּ בָזֶ֔ה עַ֥ד אֲשֶׁר־נָשׁ֖וּב אֲלֵיכֶ֑ם וְהִנֵּ֨ה אַהֲרֹ֤ן וְחוּר֙ עִמָּכֶ֔ם מִי־בַ֥עַל דְּבָרִ֖ים יִגַּ֥שׁ אֲלֵהֶֽם׃ - And Moses and Joshua...

TeX
TeX
1
Q: How do I use a custom color for a colorseries?

lukascbossertI want to create a colorseries for e.g. ten steps, defining the first and the last color. This is doable for colors like blue and red: \definecolorseries{foo}{rgb}{last}{red}{blue} But as soon as I define the colors I actually want I get an error: \definecolorseries{foo}{RGB}{last}[RGB]{0,84,15...

00:47
1
Q: How to generate two output files from if/else statement by using awk?

Ismael SanchezFrom the info below: $ cat access.dat 2025/01/01T10:00:01 "GET" /path/resource/api1 User1 500 2025/01/01T10:00:01 "DELETE" /path/resource/api1 User1 503 2025/01/01T04:00:01 "GET" /path/resource/api1 User1 500 2025/01/01T03:00:01 "GET" /path/resource/api1 User1 503 2025/01/01T05:00:01 "PUT" /path/...

TeX
TeX
2
Q: On Drawing Wavy Segments

JethroMWE: \documentclass[12pt]{article} \usepackage[normalem]{ulem} \begin{document} \uwave{\hspace{5cm}} \end{document} Output: How may I make the above wavy segment bold? Also, is there a preferred way to draw such segments?

2
Q: Evaluating derivative of delta distribution

HejheloholaI want to show that \begin{align*} (x^2\delta^{(3)},\phi) = -6(\delta^\prime,\phi) \end{align*} Where $\phi$ is a test function. I'm not quite sure how to go about it. My attempt was defining $f(x) = x^2\delta(x)$. I get that \begin{align*} (f^{(3)},\phi) = 6(\delta',\phi)+6(x\delta'',\phi)+(x^2\...

01:11
4
Q: Guitar tablature Flamenco : How to play / what does mean oamip?

Louis RBonjour, Greeting from Lyon France =) Not even sure of the formulation because searching for "guitar tablature oamip" return zero google's result. Do you play this like a rasgueado with all 5 fingers? And what the o stands for ? its not the pinky ? Thank you for the support. Have a nice day Regar...

CS
CS
01:31
3
Q: "to deceive" - Rev 13:14

Maximus1987My question is about the Biblical use of the phrase to deceive with a specific focus on: Rev 13:14 and by the signs that it is allowed to work in the presence ofd the beast it deceives those who dwell on earth, telling them to make an image for the beast that was wounded by the sword and yet liv...

1
Q: Estimating Aircraft Turbulence Severity from Velocity and Acceleration

MichaelBackground: I am a software engineer working on an add-on for a Flight Simulator, and need to estimate what severity of turbulence the aircraft is currently experiencing. As I am not a physicist, my knowledge of Physics is fairly basic. Please go easy on me. I am reading the velocity and accelera...

CS
CS
02:16
1
Q: Can I put two triac switches in parallel on a 115vac circuit controlling an exhaust fan?

mr coffeeI want to put an electronic timer switch in parallel with my electronic humidity sensing switch for my bathroom exhaust fan. I want to be able to turn on the fan for one-of-four preset times when the humidity sensor isn't sensing enough humidity to turn the fan on. I assume the switch modules are...

1
Q: What does the 3D label next to a person's name mean in Microsoft Teams?

StevoisiakDuring a video meeting in Microsoft Teams, I noticed a user had a label saying 3D next to their name. This user did not have their video feed enabled or any type of 3D avatar I could see. What does the 3D label next a user's name mean in Microsoft Teams?

CS
CS
02:38
1
Q: What is the current status in 2025 of the Everett-Chomsky controversy / debate regarding Universal Grammar?

ElderlyTraveler[Warning: I am not a linguist and have not taken a single course in linguistics. I simply love the topic] I watched a youtube vid describing Daniel Everett's claims regarding the grammar of the Pirahã language, claims that appear to challenge the prevailing Universal Grammar theory specifically ...

2
Q: Are there other languages having a definite/indefinite marking on adjectives?

Sir CornflakesThe distinction between definite and indefinite adjective declension is well-known from many Germanic languages and from Balto-Slavic languages (cf. How is the the adjective in a definite noun phrase different from a nondefinite one in Germanic and Balto-Slavic languages?). Here I want to know ab...

CS
CS
03:01
1
Q: Incremental generation of random permutations?

BCSI have a case where I need to choose a random subset of a list of know size $n$, but I don't know in advance how many items I will need (i.e. keep picking new indexes until $k$ are found that pass some test). What I want is an iterator that, once seeded with a random number, will generate a permu...

2
Q: Small sample size and interactions: just a matter of standard errors?

wrong_pathI am aware that to detect an interaction rather than a main effect, a larger sample size is usually required. By reading other posts here, mostly pointing to some work of Gelman et al., it seems to me that this has mostly to do with being able to actually identify this interaction. That is, we ne...

03:25
1
Q: convex, concave corner filtering

Junseung LimI made a floor plan with closed curves. I want to place columns only on concave corners. Please tell me how to filter convex and concave with geometry nodes. Thanks.

4
Q: ComplexExpand cannot expand Indexed objects?

LaciaIt seems that ComplexExpand cannot expand Indexed objects. Mini example: ComplexExpand[Conjugate[Indexed[x,1]]] (*-I Im[Indexed[x, {1}]] + Re[Indexed[x, {1}]]*) ComplexExpand can handle symbolic symbols. For example, even v is claimed as a complex vector, ComplexExpand treat it as real as expec...

CS
CS
04:08
2
Q: In John 1:1-2, does "in the beginning" mean that the Son already existed or that he began to exist with God?

OneGodOneLordJohn 1:1-2 In the beginning was the Word, and the word was with God, and the Word was [a] god. He was with God in the beginning. "In the beginning" (ἐν ἀρχῇ) of John 1:1-2 correlates with "In the beginning" of the Genesis 1:1 narrative, starting with Day 1. Genesis 1:3 And God said, “Let there...

CS
CS
04:30
2
Q: Does hypervelocity airflow prevent oxidation?

causativeSuppose a 1m radius tungsten sphere is traveling through the atmosphere at sea level at 30 km/s. For a given pressure and surface temperature of the sphere, how rapidly would it oxidize? Or more specifically, does the speed of the airflow prevent oxidation entirely somehow, as I've heard elsewher...

Law
Law
1
Q: Could a country be considered a "home" under Article 8 of the ECHR?

FD_bfaArticle 8(1) of the ECHR states the following: Everyone has the right to respect for his private and family life, his home and his correspondence. I am particularly interested in individuals' right to respect for their homes. It is well-established that the definition of homes here is broad and...

7
Q: Make 2025 using 3 single digits

ThomasLMake 2025 using exactly 3 single digits (not necessarily different). Rules: Allowed operations: $+,−,\times,\div,!$ (factorial) Parenthesis are allowed and can be interpreted as binomial coefficient. Everything else is not allowed, f.e. $(5*9)^2=2025$ (uses exponential) or $45^2=2025$ (uses expo...

04:56
2
Q: Proving how a fixed, positive real number determines functional inequalities.

IronGradeGiven a fixed real number a>0: There exists a rational-into-rational function - f - such that: for all distinct and rational x,y the inequality | f(x) - f(y) | > a is satisfied And for all real-into-real functions - g -: there exists distinct and real x,y such that the inequality | g(x) - g(y) | <...

05:15
2
Q: How do I go about finding instrument approach plates for airports in Antarctica?

Chandler StewardI’ve come across plates here and there on forums and Google images, one in particular - the TLS rwy 33 at NZFX (McMurdo Station) on this site, but I cannot seem to find an original source. I can only find plates that are outdated, blurry, or annotated. The airports I’m specifically hoping to get ...

1
Q: Is well-being a universal right or a subjective construct?

Daniel HallThroughout history, many philosophical traditions have debated the nature of well-being. Some view it as an inherent right that society should guarantee, while others see it as an individual perception shaped by beliefs, experiences, and cultural context. From utilitarianism, which seeks the grea...

2
Q: I missed a date for a conference. How should I handle this with my professors?

IAGRecently, I was proposed by professors at my faculty to attend a conference. My professors asked me to confirm my interest in attending and they sent a list with my name and later informed me that I had been chosen and soon the organization would contact me to inform me. I waited for that day, bu...

CS
CS
05:59
5
Q: What is the direction of dual basis vectors relative to the natural basis vectors?

JohnBy natural basis vector I mean the one normally used when representing a vector ie covariant and usually written with a subscript to indicate the co-ordinate. By dual basis vector I mean the reciprocal basis vector which is contravariant and usually written with a superscript. In the following I ...

2
Q: How can I use time manipulation in the battlefield?

ClickworkSo, imagine being a medieval clockworker for the king. (I know they didn’t exist in medieval times, but I’m hand-waving that.) It’s just a normal day, and then—BOOM!—you’ve been magicified. (Don’t ask how.) Now, any pocket watch you choose has the ability to tamper with time. Here’s how it works:...

 
1 hour later…
DIY
DIY
07:07
1
Q: Brand New Hot Water Heater will not heat

RickI just had a professionally installed Bradford White, 40 Gal electric hot water heater and for over a week cannot get any hot water. I have had two certified, well experienced, electricians here over the past seven days. Each stayed for hours trying to figure out the issue. The entire water hea...

07:29
1
Q: Schemes over formal disc with smooth generic fiber

Alexander BravermanLet $k$ be a field, and let ${\mathcal O}=k[[t]], {\mathcal K}=k((t))$, $D=Spec(\mathcal O)$, $D^*=Spec(\mathcal K)$. Let $X$ be a scheme of finite type over $D$ with smooth generic fiber (i.e. which becomes smooth when we base change it to $D^*$), but not necessarilly smooth over $D$; let $d$ be...

07:55
4
Q: Intuition for Equivalent Probability Density Functions of Order Statistics for Uniform RVs?

tarheeljks I am working through DeGroot Probability 4th Edition and came across two equivalent pdfs: The range of a sample of uniform random variables The second largest observation from a sample of uniform random variables I have restated the problem slightly, but the information and pdfs are below. Cons...

CS
CS
08:13
2
Q: Why is redshift possible if the speed of light is constant?

stickynotememoIn high school, students are explained how the Doppler effect causes the frequency of sound waves to increase during motion towards the sound source, and decrease when moving away. This explanation is also applied to light waves, to explain the phenomenon of redshift and blueshift. However, when...

1
Q: Inertia on other planets

user480029I was learning about inertia with some middle school students today, and one of them asked: does inertia change on other planets? Thinking about the formula for calculating inertia, the answer would be no. Inertia is derived from mass, which is constant across planets. However, thinking about ine...

 
2 hours later…
09:45
3
Q: How can I make a solar-system-wide plague?

ClickworkMy world is set in the distant future. There are permanent populations on Mercury, Venus has been colonized, and Mars is completely terraformed. We’re still working on the gas giants. I want an incredibly contagious disease to naturally evolve and throw a live grenade into humanity’s plans. Ideal...

10:28
1
Q: Theory regarding fate of the Universe

NothingI am not from astronomy/astrophysics background but I like to study these subjects whenever it is possible. The other day I was reading the theory of everything and a thought struck.The idea was that: After finite time stars which are capable of becoming black holes(Chandrashekhar's limit)will b...

3
Q: Origin of "Can too" in response to "You can't"

BobOgdenI was just reading Dragon Ball Z in which there are two children (Son Goten and Trunks) arguing about what the other can or cannot do, specifically Trunks claiming he can win their fight with one arm only, Son Goten replying "You cannot!" and Trunks retorting "Can too!" I've got a few questions. ...

2
Q: ImageMagick only trimming one side, how can I trim both?

Jeffrey FlyntI'm trying to use ImageMagick(7.1.1-43) to automatically crop a photograph of a coin, removing the surrounding background. I want to trim the image based on a "fuzz" factor, effectively removing the mostly-uniform color. However, my current command only trims the left side of the image, leaving t...

1
Q: Output of self-attention

user394334My question is regarding attention, if what we get from $softmax\left(QK^T/\sqrt{d_k}+M\right)V$ are quantities we are supposed to add to the original embeddings of the tokens, or are new embeddings? First explanation: In this video by 3blue1brown he explains attention. https://www.youtube.com/wa...

10:53
5
Q: Evaluating an integral in the distributional sense?

BellI am trying to evaluate the integral $$ f(x)=\int_0^{\infty}q^{2}\cos(2\pi qx)\,dq. $$ I first tried this using Mathematica, which said that the integral is divergent on $q\in (0,\infty)$. Looking at the problem again, the integrand grows quadratically and is not Riemann (nor Lebesgue) integrable...

1
Q: Are the Final Responses Independent of the Order?

SixiaoThere are some perfect logicians, all of whom are honest and trust each other. Each of them is given some information and asked to deduce the answer to a common question. They stand in a line, and each of them takes turns responding in order, indicating whether he has deduced the answer, with the...

11:14
3
Q: Slow Interstellar Wars

ClickworkIn the far future, humanity has colonized the surrounding star systems. Sol, our current system, is in a war with Alpha Centauri. Different political structures, distrust built on coincidences, misattribution of terrorist attacks, and the growing divide due to little to no communication have led ...

1
Q: Moderation analysis assumption: univariate outliers after centering

EmilyI am conducting a moderation analysis for my thesis and am performing assumption testing. I found a few univariate outliers and transformed any scores that were z-score of > (-)3.29. I then continued with looking at multicollinearity, which was violated as per TOL and VIF statistics. I manually c...

12:00
1
Q: Translating Meta's .haptics file frequency and amplitude to Unity's left and right motor strength

Programmer9000Meta has an application called Meta Haptics Studio that allows you to create detailed haptic timeseries data. It outputs this data in the following format as amplitude and frequency information: "signals": { "continuous": { "envelopes": { "amplitude": [ { "...

CS
CS
12:19
2
Q: Identifying a Rotary digital encoder from Dewalt DCR025

Thebighat99It needs a new push switch rotary encoder. I was going to rebuild it but one of the plates is broken. It’s for turning on and adjusting the volume. Why are these not marked with some kind of identifier? What do I need to replace this? The whole board is $50 and up.

12:44
2
Q: Can I temporarily or virtually merge or map audio stems to get loudness level readings from a set of 5.1 WAV files with FFmpeg?

Giallo FiendI have six mono WAV stems (L,R,C,LFE,Ls,Rs) that are part of a 5.1 mix. I would like to merge them together into a group so that I can get loudness measurements from them as a 5.1 set. This is working fine with a single mixed file: ffmpeg -i Muxed6ch.wav -filter_complex ebur128=peak=true -f null ...

TeX
TeX
3
Q: I made a key using pgfqkeys. It holds a list of options for a node. The option 'rotate=-60' is being interpreted as an arrow tip

JasperI have a command which I can pass options to, by setting a key to a list of options that I want to add. \documentclass[tikz, border=1cm]{standalone} \makeatletter \pgfqkeys{/myfamily}{ .is family ,options/.store in = \myfamily@options ,options = {} } \newcommand{\mynode}[1][]{% \p...

13:04
1
Q: What is the following tantra prayog called?

HarshI know there are shatkarmas like stambhan vidweshan shantikaran etc.. But what is the following mantra prayog called? i.e Making a person forget his love/attachment or removing romantic feelings towards someone..

 
2 hours later…
14:58
2
Q: Identifying garden plant

Albert F DI'm not sure if I've correctly identified the plant in this photo. I'm based in Peru. Notably the plant was removed for having a "sickly" odour, and it only occurred to me to take a photo of this shoot for later identification. I've done a Google image search and I'm wondering if it is some kind...

5
Q: Odd number of rational unit vectors summing up to 0.

caffeinemachine Question. Let $n$ be an odd number. Do there exist unit vectors $v_1,\ldots, v_n$ in $\mathbb R^2$ such that both coordinates of each $v_i$ are rational and $$ v_1 + \cdots + v_n = 0 $$ If $n$ were even then it is easy give examples for the existence of the above. For $n=3$ I know that the ans...

 
1 hour later…
TeX
TeX
16:05
1
Q: Newline before \begin{justify} makes line spacings larger?

palapapa\documentclass{article} \usepackage{ragged2e} \begin{document} \begin{center} aaa \begin{justify} aaa \noindent aaa \end{justify} aaa \end{center} \noindent aaa aaa \end{document} \begin{document} \begin{c...

1
Q: Can NDSolve::ndsz be avoided with reduced precision when looking for closed curve?

muthsicI am trying to solve the system of differential equations in Mathematica and use it to construct a surface that will eventually be rotated along the x-axis to form a shape like a torus. I am having issues with the numerical solution and would like to know if there is a closed curve or how to appr...

TeX
TeX
16:27
1
Q: Is that the optional arguments that matters the expansion?

ExplorerI almost confranted with the same question as this link: I get to know that: \newcommand couldn't be expanded with \edef \NewExpandableDocumentCommand could be used with \edef But in my following case, it seemed that it also related with the optional arguments? \documentclass[border=6pt,tikz]{s...

2
Q: On powers of a Markov matrix

sparrow_2764Recently, I came across a very nice question from the 1985 AIME: Let $A$, $B$, $C$ and $D$ be the vertices of a regular tetrahedron, each of whose edges measures $1$ meter. A bug, starting from vertex $A$, observes the following rule: at each vertex it chooses one of the three edges meeting at t...

17:12
2
Q: What does it mean to love God?

BenDoes it mean to love others? Does it mean to pray? Does it mean reading the Bible? What are more ways I can love Him?

1
Q: Integrate functions in the distributional sense

BellI am wondering if it is possible to integrate functions in a distribution sense using Integrate or another function. For example, the integral $$ I=\int_{0}^{+\infty}x\cos(x)\,dx $$ is not integrable in the classical sense but can be evaluated in terms of the Dirac delta distribution such that $I...

17:34
2
Q: How does the Protestant idea of Sola Fide differ from shinju nambutsu in Pure Land Buddhism?

Dark MalthorpIn the Pure Land school of Buddhism, especially in Japan, there is an idea which sounds very similar to Protestant soteriology, especially Sola Fide, which is basically the idea that one can be "saved" only and entirely by putting one's trust in the saving power of the work of Amitabha Buddha. Th...

RPG
RPG
17:55
3
Q: Gloves of Eldritch Admixture, is the charge spent if you miss on the attack?

7thSeeker MIC, M105 Gloves of eldritch admixture Spending 1 or more charges adds extra damage to the next eldritch blast you make before the end of your turn. This damage can be acid, cold, or fire, as chosen by you each time you activate the gloves. If when using Eldritch Blast, I decide that I will use...

18:43
4
Q: Integration using substittution

Angelo MarkWhen we integrate square root of a quadratic function, we can use method of completing the square along with suitable substitutions. Here I have listed some examples. $$\int{\frac{x-1}{\sqrt{x^2-2}}}dx$$ $$\int{\frac{1}{(x-1)\sqrt{x^2-2}}}dx$$ $$\int{\frac{\sqrt{x^2-1}}{x-2}}dx$$ For the first on...

19:02
1
Q: Ham Radio simulator: live streaming microphone audio between 2 browsers, connected via ubuntu 22

George Stefan Kudor-GhitescuI am trying to simulate a radio with a PTT button. Connected users should be able to live voice chat in the group, one at a time, while holding a button. I have a Ubuntu 22.04 server running, with nginx, but unfortunately nothing seems to work. I don't know exactly what a good method should be. I...

TeX
TeX
1
Q: boolean macro does not work

user69507I want to build the "publications" section of my CV taking info from a json files. This is one of the json files: { "title": "Some title", "congress": "Some congress" "organizedBy": "Some institution", "authors": [ { "name": "Author 1", "lastName": "...

2
Q: Redefine footnote

Phillip BachlerIs it possible to redefine \footnote in a way that one could use an environment like \begin{footnote} Text \end{footnote} instead? This would make the code sometimes much more readable. Any suggestions would be greatly appreciated.

19:26
3
Q: What's required to travel from Australia => London => Europe?

GraydaLater on this year (specifically, late July / early August), My wife (a dual US / Australian citizen), myself (Australian citizen) and my brother (Australian citizen) are planning a UK / European sightseeing trip. The plan is to depart Australia, arrive in London, stay there for a week, then get ...

RPG
RPG
19:46
1
Q: Combination weapons and reloading strike from Drifter

Иван МартемьяновSo I have a problem with reloading strike not working with combination weapon Reloading Strike Requirements - You're wielding a firearm or crossbow in one hand, and your other hand either wields a one-handed melee weapon or is empty. You make a melee attack and then reload your gun in one fluid...

20:11
1
Q: Particle Object Modifiers Not Shown in Final Render

ENIACGiven an emitter object with a particle system. Particles are rendered as objects (the Cube). The cube has modifiers (the Subdivision modifier). The subdivided cubes (particles) are shown in the Viewport window but not in the final render. How to fix that? Thought I could find the solution but ha...

CS
CS
20:53
2
Q: What does it mean that believers are “a kind of firstfruits of his creatures”? (James 1:17–18)

Jason_James 1:17-18 Every good gift and every perfect gift is from above, coming down from the Father of lights, with whom there is no variation or shadow due to change. 18 Of his own will he brought us forth by the word of truth, that we should be a kind of firstfruits of his creatures. How would t...

DIY
DIY
21:17
1
Q: Wall sockets in Living room

john cooleyI have two single wall sockets in my living room with only one set of wires going into them, does this mean they are a spur of the ring main. I think they have been in since the house was built in the 70’s The reason for asking is i would like to put two extra sockets in the room. Thanks John

21:40
2
Q: Extrude mesh circle edges randomly while scaling edges with geometry nodes

ConejovskiIs there a way to extrude randomly the edges of a mesh circle keeping them parallel to the original edge while the extruded edges keep the original angle? I've uploaded 3 images (the last one is the geometry I'm looking for): Extruded edges are not parallel to the original edges: Extruded edge...

1
Q: What's the name of this comedy movie about an inherited apartment building that was a total wreck?

JimThis movie was a 1980s(?) comedy set in New York. I was sure the leading actor was Bill Murray, and I think Brian Doyle-Murray may have been in it. A man with economic problems inherits an apartment building that has tenants. He expected that he'd be rich by collecting the rents. But the building...

2
Q: Trouble understanding the conclusion from the Proposition 7.1.11 of Terence Tao's Analysis I

Shyam TripathiThe following was proved in Proposition 7.1.11(c) (in Tao's Analysis): 7.1.11(c) (Substitution, part I) If $X$ is a finite set, $f:X\to \mathbb{R}$ is a function, and $f:Y\to X$ is a bijection, then $$ \sum_{x\in X} f(x) = \sum_{y\in Y} f(g(y))$$ Later in proof of Lemma 7.1.13 Tao sir uses this...

22:01
4
Q: Why does bash give the following result after brace expansion?

YakogI am using linux and the following version of the bash: GNU bash, version 5.1.16(1)-release (x86_64-pc-linux-gnu) When I type: echo file{[1,2],3}.txt I expect brace expansion to be done first, so: echo file[1,2].txt file3.txt After that, I expect it to stop there, since [1,2] is not a valid gl...

4
Q: Bora One carbon brake track worn out

BeeDee_czI recently noticed the brake track of my front wheel Bora One 50 is worn out on one place. If I press the place with my nail, I feel that it is already a little softer than the surrounding areas which are in better condition. The rear wheel shows no major signs of wear. They have about 20.000km.....

8
Q: How to set up and maintain communication with students to avoid authorship bitterness?

postdocI've read many questions from undergraduate/graduate students on this SE, that describe the following pattern: The student works on a research project under a supervision of their academic advisor. The project gets done and the student claims that they were the only one who did the work, and/or ...

TeX
TeX
4
Q: use \sqrt in a command to save expression or value

Christophe PoulainI try this code to save value : \documentclass{article} \newcounter{NumCmd} \setcounter{NumCmd}{0} \NewDocumentCommand\SaveSol{m}{% \stepcounter{NumCmd}% \expandafter\xdef\csname SolSaved\Roman{NumCmd}\endcsname{#1}% }% \begin{document} \SaveSol{$\frac12$} %\SaveSol{$\sqrt3$} \SolSavedI \...

5
Q: Example of a group which has 2 elements of order 3, but their product is of order 2, if such exists

User666xI am trying to come up with an example of a group $G$ which has 2 elements (maybe the group itself has more elements) s.t. $g,h\in G$, and $o(h)=o(g)=3$, but $o(gh)=2$. Clearly it is not an Abelian group. I am trying to avoid using group presentations and relations, just trying to find one concre...

CS
CS
22:23
1
Q: Should/can one describe the angular momentum carried by a Photon as a 2 dimensional Hilbert space analogous to an electron spin?

ZaphI am currently trying to wrap my head around electron photon interaction processes in Atoms, as for example described here. In particular I am interested in the dependency of the angle between photon movement-direction and angular momentum component-quantization axis. I am a bit confused by all t...

CS
CS
22:45
1
Q: Why didn't Trump's executive order on death penalty seek death penalty for major drug dealers?

Franck DernoncourtDuring this week's speech to the governors, Trump encouraged them to seek death penalty for major drug dealers. Which made me wonder: why didn't Trump's executive order on death penalty seek death penalty for drug dealers? It only mentions: (b) In addition to pursuing the death penalty where po...

1
Q: Does experiencing gravity in general relativity require an object to have length?

Dhanvin MalhotraI've recently started studying general relativity and I'm trying to get an intuition for how gravity works. So far I’ve come across two different explanations online: Time dilation explanation: Many explanations, like VSauce's Video, with it's pencil and cone visual, suggest that gravity arises ...

23:30
4
Q: C, recursion and the HP-1000

Ture PålssonWas there ever a C compiler for the HP-1000? If so, what did the code for function calls look like? In particular, how did it handle recursion? If I have properly understood the documentation I have found, the architecture did not have a dedicated stack register, and the jump-to-subroutine instru...

3
Q: Detecting trivial homology by manifolds

Gael MeigniezI have a continuous map $f:X\to Y$ between two topological spaces. I know two things: i) $f$ induces an isomorphism in integral homology; ii) For every smooth manifold $M$ of dimension $\le n$ and every continuous map $h:M\to X$, the composition $f\circ h$ is null-homotopic in $Y$. (In particular...

1
Q: Writing Fiction in a Biblical Style

MochaIf I write a work of fiction in the style of one of the narrative books contained in the King James Bible, will that attract or repel readers? There are a few books, whose authors attempted to write them in such a style, that seem to have fallen short of gaining popularity, or that seem to have g...

1
Q: pymatching for rotated surface code

forky40I am trying to do MWPM with pymatching for a rotated surface code with distance $L$, but I can't figure out how to initialize the Matching object in a simple way. I only want a single round of decoding. For $L=3$, I have 9 qubits with the following numbering scheme (X marks the checkerboard squar...

CS
CS
23:52
1
Q: Where exactly does the resitance come from? (Voltage Source Question)

user525522I‘m new to this, so apologies if this seems like a very obvious/basic question. I was studying voltage sources and this was an example question. A battery supply consists of an ideal voltage source in series with an internal resistor. The voltage and current measured at the terminals of the batt...


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