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00:46
4
Q: Homeomorphism vs Homotopy Equivalence

MegaFish TVIs the following informal way of thinking about the difference of homeomorphisms and homotpy equivalence valid: Let $f\colon X \to Y$ be a homotopy equivalence, then $$f\text{ is a homeomorphism} \Leftrightarrow f \text{ doesn't change the ''dimension'' of } X.$$ Where by dimension I mean for ex...

 
1 hour later…
02:03
3
Q: Make clicking "add private note" in the saves view auto-focus the text input for the private note

starballAfter clicking "add private note", the text input for the private note appears, but it isn't focused automatically. I don't like having to move my user-agent's focus (either by pointer or keyboard) to the text input manually. Please focus it automatically. This kind of problem seems to be a littl...

4
Q: Refining LayeredGraphPlot by selecting downward links only

Tugrul TemelThis codes: ClearAll[wam, vLabels, sa, wag]; wam = { {0, 0.03, 0, 0.03, 0.02, 0.04}, {0.05, 0, 0.07, 0, 0, 0.03}, {0.06, 0, 0, 0.07, 0, 0}, {0.05, 0, 0.03, 0, 0.04, 0}, {0.06, 0, 0, 0, 0.05, 0.04}, {0.01, 0.02, 0.07, 0.01, 0, 0.05}}; vLabels = {1 -> AGF, 2 -> CO12, 3 -> MA1, 4 -> MA2, 5 ->...

02:54
3
Q: How to reject a postdoc offer from ex-co-author?

JChase1990I have been on the postdoc treadmill for 5 years now. My current employer has been clear from the start that unless I meet certain metrics with publications, I would not be able to stay past my current contract, which expires this year. An ex-co-author of mine, who works at another institution, r...

 
1 hour later…
04:12
1
Q: It seems the main clause is absent in this complex sentence. Why is it correct?

user421993I saw this complex sentence in the CGEL Quirk et al. What surprises me is that they are fond of snakes and lizards. In this sentence, the subject is the wh-clause and the predicative is that-clause. Both of them are dependent clauses(subordinate clauses). why is this sentence without a main cla...

05:03
3
Q: How would perpetual motion technology (and "free" energy) affect poverty?

eyelashI'm writing a near-future story in which a form of teleportation has been invented. It's only been around for few decades, and is still very complicated (and expensive) to build, so it's only used for large-scale industrial and governmental purposes. The average civilian's life hasn't been greatl...

05:28
1
Q: Stainless Steel kitchen sink

deahudgeMy stainless steel kitchen sink arrived with the P65 warning for Nickel and Chromium. Will these chemicals leach into the water over time? Are they present on the surface? Can they be absorbed in my hands as I use the sink? Simply wondering if there is a safer sink available without the P65 warni...

 
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06:45
1
Q: Why did my road bike tire patch fail?

DanLong story short: I put a patch on a punctured road bike inner tube, it was fine for two days and 20 km, then the tire became completely flat, due to air leaking from the edge of the patch; why? On Saturday, I patched a punctured inner tube on my road bike (rear wheel, 25 cm tire). I have patched...

 
2 hours later…
08:27
1
Q: Working in Mathematica over a cyclotomic ring

AdamHow can I simplify expressions in $\mathbb Q[x]/(x^7-1)$ in Mathematica, i.e. make Mathematica transform $x^{20}+x^8+x+3$ into $x^6+2x+3$.

09:18
0
Q: Display Comment Activity Directly in Stack Overflow Profile

spad'I've observed that to view comment activity from Stack Overflow, one needs to navigate to their Stack Exchange profile. For reference, here's an example: Comment activity I believe it would be more user-friendly if this comment activity were displayed directly on the Stack Overflow profile, simil...

10
Q: Episode of Sci Fi show I saw back in the 90's, were the main character is stuck in space, combines alien DNA with his and starts asexually copying

SolidSpiralI thought this might be from the newer The Outer Limits TV show, but can't find the episode. From what I recall, a guy was stuck on Mars (or somewhere) and was going to die. He found some native alien lifeform and used its DNA to mutate his own DNA to be able to survive. He then started making th...

1
Q: How could an AGI have legal protections in a human society?

Vogon PoetLaws of society can only grant rights if there is some means to remedy the violation of the right. For example, a law that protects a human’s right to breathe water can’t be tried in court even if some human finds out they can’t breathe water. The law simply can not possibly “fix” the thing that’...

0
Q: I had a question that did not have all of the information needed to fully answer. Is it better to rewrite the question, or start a new question?

Stephen ElliottThere was this question "How do I determine temperature and pressure rise whenever mols of gases are added in a isolated room?" that I attempted to answer - but in the end I found myself in a roadblock where everything I felt was necessary was not in the problem statement. Other answers seem to h...

09:43
0
Q: Надо синонимизировать метки [информатика] и [computer-science]

wchistowЕсть две метки информатика (80 вопросов) computer-science (26 вопросов) - они очень похожи, и их надо синонимизировать.

 
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11:00
2
Q: QGIS how to use source query builder to only show the top X values of an attribute?

VV_61I have a layer containing polygons, and one of the attributes within it represents population growth. My goal is to filter the layer to display only the polygons with the highest 100 values of population growth. I am considering utilizing the query builder to craft an expression, although I am un...

 
1 hour later…
12:16
0
Q: Синонимизировать [floating-point] и [float]

ГлебНужно синонимизировать следующие метки (разумеется, в пользу float): -floating-point(26 вопросов, нет описания) -float(268 вопросов, есть описание) Причина: "плавающая точка" и "число с плавающей точкой", по сути, являются одинаковыми темами.

1
Q: How to draw an eagle?

EpaI would like to draw an eagle with TiKz, with one continuous curve. The eagle can be simpler, but basically like this with symmetric wings. The tikz code is needed to replace the bird below with the eagle \begin{tikzpicture}[scale=.55] \clip(0,0) .. controls (.15,.35) and (2,-.1).. (2,0.5)--+...

4
Q: Is there a mechanical disadvantage or taboo with creating an underaged character?

Victor BMaybe I have overthought this before posting, but I have a nagging feeling that I might be missing a piece of mechanics or social taboo that addresses this topic. I am interested in playing a character cursed with more power than they can control, learning to hone their gift and disprove the rumo...

-2
Q: Basement Waterproofing Oshawa

Md Sumon AliWaterproofing contractor Oshawa by Dryshield Waterproofing Solutions. DryShield Oshawa offers quality basement waterproofing services to Oshawa, Ontario homeowners to repair leaky foundations and wet basements. enter link description here

12:42
3
Q: Matching position of same elements in two lists

phy_mathSuppose I have two lists of the same size as follows: A1 = {a, b, c, d}; A2 = {c, a, b, d}; I want to construct a function that gives the relation between positions of same elements in both lists. For example, we see that a = A1[[1]] = A2[[2]] b = A1[[2]] = A2[[3]] and so on. With DeleteCases a...

13:08
0
Q: Questions about best coding practice

Barbaud JulienI recently asked a question about a coding problem to which I had several possible solutions, and I was asking which one would be considered best practice, or if any of them would be considered problematic (Best pythonic practice to pass many redundant parameters from module to module). The quest...

13:33
2
Q: Prepending an element to all sublists in a list

phy_mathSuppose I have some array A1={ {a1,b1},{a2,b2},{a3,b3} }; For each list, I want to add element a0 in the first part so that my output is {{a0,a1,b1},{a0,a2,b2},{a0,a3,b3}} Without explicitly typing the first entries, how one can implement this? Further what if I want to add some element in th...

0
Q: Creating Clustered Column Chart in Excel by using Python and openpyxl library

cmartincuIn Excel I have this table: I'm trying to generate a Clustered Column Chart like in the below image With the following script I'm getting this table: import pandas as pd import openpyxl from openpyxl import load_workbook from openpyxl.styles import Font from openpyxl.chart import BarChart, Ref...

13:58
1
Q: Is slightly ajar a tautology?

AkshayI was reading the novel Verity, and I came across the phrase "slightly ajar door". I didn't know what ajar meant and I looked it up to find it means (of a door) slightly open. I wonder if "slightly ajar" is a tautology and is grammatically incorrect? Since it is used by the author who must be muc...

1
Q: Automatic URL parser is wrong (discarding character after URL)

U. WindlWhen using the part for https://dba.stackexchange.com/q/330357/272354: in a question, the trailing colon is discarded. IMHO it should be obvious that the colon cannot be part of the URL (link), so it should follow the encoded URL link text instead (or at least be part of the URL link text). This ...

14:24
2
Q: How to spin a zig-zag mesh on its axis

blender breathI have made a zig zag mesh, and I want to animate the Red & Black section to rotate on its Y axis. I separated the particular mesh section from the rest of the mesh, so it only affects that section which I want to spin. I tried to parent it to an empty object, but its spinning incorrectly. I also...

1
Q: Is there a difference between "get to the dining room." AND "get over to the dining room"?

yunusThis is from a british tv show, where 3 students from state and private schools swap schools for a short time. School swap (see:10:28-10:31) "They should get up, get showered, and get over to the dining room for breakfast." "...get over to..." drew my attention. I wonder why they don't simply say "...

14:50
2
Q: Physical Cause of Reactance of Inductors and Capacitors

Srish DuttaWe know that a capacitor and an inductor both offer some opposition to the flow of current through an AC circuit and their reactance is a measure of the amount of Ohmic opposition due to these circuit components. I am aware of how these quantities arise mathematically. However, my question is, ph...

 
1 hour later…
16:06
6
Q: Please don't show Collectives surveys to people who aren't in Collectives

TylerHI just got a "How are we doing? Help us improve Twilio" banner survey notification when I visited a twilio question: Separating User Speech from Chatbot Speech in Real-Time Audio Streams with Twilio and Google Speech-to-Text I am not in, nor have I ever been in, the Twilio collective. I have neve...

1
Q: Do chords sound good only on specific instruments?

reignWhenever I search on the internet for chords, google spits out things such as "guitar chords" or "best chords for piano". But isn't it that such chords would be good for any instrument?

16:32
0
Q: Do the Community BOT and the pre-question analysis do the same thing?

JBHWhile posting a question this morning I noticed the pre-question analysis that checks if there are any possible improvements for the question. (I passed.) Over at Worlbuilding it's not uncommon to see the Community BOT comment claiming that the question is ambiguous and might need improvement. Do...

 
1 hour later…
17:48
4
Q: Is it hard/impossible to return to academia after a 2 year break?

AmezaurI am close to finishing my PhD and most likely will have 1 or 2 papers published. For personal reasons I have to take around 2 year break from academia, but I would like to come back for a postdoc. People around me keep telling me that if I get out, I can't come back in, especially because the gr...

18:14
4
Q: On the logic meaning behind rejecting the null hypothesis and its relantionship with Type I error

volperossaI understand that the p-value is defined as the probability to obtain a "more extreme" value of $w$ if $H_0$ is true, i.e. $p=P(|W| > |w| \ |H_0 $is true$)$ and the "significance level" $\alpha$ is a threshold to decide if it is "admissible" that $w$ comes in null hypothesis setting, i.e. $p < \a...

5
Q: Zap scan commercial APIs used in AppExchange apps?

Robert SösemannMy Managed package, which will soon be submitted for Security Review to be listed on the AppExchange, uses two commercial REST APIs (one of them is the Open AI API for GPT4). As someone who submitted countless apps before, I know that external systems must be checked using Chimera, ZAP, or Burp t...

7
Q: Why is the following limit not 1?

lineageConsider $$\lim_{n\to\infty} f(n)=\lim_{n\to\infty}\frac{(n!)!}{(n!-n)!}\tag{1}$$ For large $n$, one can ignore $n$ wrt. $n!$ in the denominator. The limiting value should therefore approach $1$. However, as the plot shows, the limit blows up. Why is that?

 
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19:30
5
Q: Who is responsible for making the time machine in the Terminator movies; humans or Skynet?

RANSARA009In the Terminator movies, Skynet is trying to kill Sarah and John Connor, sending various terminators from the future to hunt them down. So my question is: who made the time machine to go back to past? Did Skynet do so, or was it previously made by humans and then taken over by Skynet?

20:21
3
Q: Drawing angle bisectors in a triangle

csn899In triangle $\triangle ABC$, the angle $\angle BAC$ is equal to $60°$, $|AB|=2$, $|BC|=\sqrt 6$, and $AD$ bisects the angle $\angle BAC$ and $BC$ at point $D$. How can I find the length of the angle bisector $AD$ and draw it? I have drawn the triangle using the following code: sol = First@ Sol...

9
Q: Cross talk within IC package

gyuunyuuI have learnt that on the PCB, the signal tracks must be a certain distance apart to minimize cross talk. This makes sense this we must reduce the electric and magnetic field coupling across to neighbouring conductors. I was watching some videos in which an IC package was opened to show the silic...

20:47
2
Q: What would happen to a person if their DNA was swapped for someone elses?

WossnameIf Star Trek transporters actually existed... Bob and Dave transport down to Earth from their ship. But something goes wrong and their DNA is swapped over! Not their cells as such, just the DNA strands within each cell. What would happen to them in the ensuing seconds, hours and days? I can ima...

1
Q: How to convert text to uppercase (or lowercase) in-place in Excel?

dr_How to convert text to uppercase (or lowercase) in-place in Excel / Office 365? This page suggests to use the Change Case button, but there's no such button in my copy of Excel, and it does not even appear in the list of available buttons when customizing the Ribbon. EDIT: The Change Case button ...

21:13
0
Q: Обязательный ответ при выставлении отрицательной оценки вопросу

ДмитрийНадеюсь, я пишу в правильное место. Заметил, что вопросы с меткой java почти гарантированно получают -1 к рейтингу (чаще всего ровно -1). При этом, что самое смешное, ответа на вопрос нет. Я считаю, что если уж ты считаешь вопрос глупым и простым - так ответь на него. Я предлагаю при выставлении ...

22:03
10
Q: Cryptic jigsaw crossword puzzle

NarushiteliThis is a cryptic jigsaw crossword: no clue numbers are provided in the grid; solvers must instead fit the answers in wherever they can. The solution is unique, and the green tick mark goes to whoever shows the filled grid and explains the clues (correctly) first. Clues are listed in alphabetica...

2
Q: 7-zip for MacOS man page missing

user1934428Starting from this page, I tried to install a program for manipulating 7-zip-files using brew install sevenzip Interestingly, this installed an executable named 7zz, but no man-page for it. While running 7zz without parameters produces a short overview of the command line flags, a more detailed ...

3
Q: APK Updates showing on Aurora (3rd party store) before Play Store

PaulMcF87I noticed this yesterday. I went onto Play Store and had 10 app updates available I then went on to Aurora Store and there was 125 app updates available I checked the version number of a few apps online, and it did seem as though the updates were legitimate. My questions: Are the updates on Auro...

22:54
4
Q: Making separate individual estimated tax payments when married filing jointly

Mike EngMy spouse and I typically file our tax return as married filing jointly due to the advantages like the child and dependent tax credit, and we plan to do so again this coming year. This year, we have some changes to our situation: She started a part-time job that pays her as self-employment incom...

3
Q: Why do infinite-dimensional vector spaces usually have additional structure?

JoeOn Mathematics Stack Exchange, I asked the following question: Why are infinite-dimensional vector spaces usually equipped with additional structure? Although it received one good answer, I feel that there is more to be said, and a more technical explanation would be welcome. I thus ask a modifie...

4
Q: Language features for making code easier to unit test

Greg NisbetWhat can programming languages do to make unit testing easier? For the purposes of this question, I'm especially interested in unit testing procedural code with lots of heavy side effects. Let me define a heavy side effect as one like writing to disk or calling an external service and specificall...

23:20
2
Q: Since when did the Catholic church accept Protestant baptism, and what was the original rationale for accepting?

GratefulDiscipleThis is a historical question. I'm interested in the earliest instance that the Catholic Church (whether by the Vatican or by a bishop) accepted a Protestant baptism for a catechumen (a convert), thus the Confirmation sacrament did not have to be preceded by even a conditional sacrament of Bapti...

5
Q: Select from list elements greater than next element

user57467Given t1 = {3, 2, 8, 6, 1, 9, 4, 1, 5, 0} I want to get all the elements which are greater than the right neighbor. The result would be {3, 8, 6, 9, 4, 5} I can do it by t2 = Partition[t1, 2, 1] Select[t2, #[[1]] > #[[2]] &][[All, 1]] But I am looking for a solution like Select[t1, #1 > #2 &] ...

23:45
7
Q: How long could a person survive on nothing but water, salt, and sugar?

M SMagic System One of my worlds has a magic system that allows people to produce any element, as well as a small number of molecules. When something is produced using magic, it spawns into existence in front of the user, replacing whatever was previously occupying that space. Background Info The mo...


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