« first day (800 days earlier)      last day (1358 days later) » 

5:04 PM
11
Q: Is the Coleco computer from The Simpsons based on a real computer?

guestIn the episode Lisa Gets an "A" of The Simpsons, there is a fictional computer called Coleco: Is that computer based on a real one or are there any records of computers resembling that?

7
Q: How did bank transactions (or "data" transactions) work when it took people weeks to travel vast distances?

Lance PollardI am designing a prototype for a distributed database that could work across vast distances of space, like the goals behind IPFS working at planetary, or galactic, scale. I want to solve the problem, at least theoretically (with a practical prototype POC in JavaScript demonstrating the key algori...

6
Q: How often do native speakers use the word "to scathe"? Is it OK if I use it instead of "to injure"?

ChoroThe word "to scathe" is the synonym of the word "to harm" or "to injure". However, I have never noticed how somebody uses it. Is it OK to occasionally use it instead of "to injure" during speaking and writing?

8
Q: Polarization of sunlight by the earth's atmosphere

niels nielsenI have just learned that sunlight traveling through the earth's atmosphere picks up a net polarization by collisions with molecules ($O_2$, $N_2$, etc.) that the photons encounter. One would think that those molecules would have to possess some degree of common alignment in order to produce light...

13
Q: What are the criteria for degree revocation?

cag51I was awarded a degree from a reputable college or university. For what reasons could my degree be revoked after the fact? Should I be worried? Note to readers: This is a special community wiki 'canonical' question that aggregates advice on a frequently-asked question. See this meta discussion. P...

3
Q: Finding the maximum from a two dimensional list

D.NandaI have a two-dimensional list where each value of $ x $ can have many values of $ y $. for example {{1, 2}, {1, 3}, {1, 4}, {2, 2}, {2, 3}, {2, 4}, {2, 5}} For each value of $ x $, I have to find out the maximum value of $ y $. So, the result will be like {{1, 4}, {2, 5}} I tried with Max, Shor...

20
Q: He hesitated, realizing what he was about to say to the world's first human level AI would be in history books... -- which SF story is this from?

Walt Donovan(I was directed here from r/scifi, where I asked this question, to no avail but some interest. I am posting a copy of what I posted on that subreddit.) I am trying to dig up this novella, I believe, that I read once about 20-30 years ago. It's about a computer scientist who is trying to build an ...

6
Q: What is the interaction between Green-Flame Blade and Absorb elements

Sam LacrumbGreen-Flame Blade States: ...you must make a melee attack with a weapon against one creature... ...On a hit, the target suffers the attack's normal effects, and green fire leaps from the target to a different creature of your choice that you can see within 5 feet of it. The second creature tak...

5
Q: If "bro splits" don't work, why is literally every muscular guy in my gym doing them?

JemSurely they must be doing something right then? I keep hearing internet people criticize the "bro splits" (programs where you train each muscle group on its own dedicated day of the week), but in my gym, they're by far the most common routine, and everyone on them seems happy and confident with t...

19
Q: The F-16s that were scrambled to intercept United 93 did not have time to arm the jets, so the pilots were going to “ram it” how does that work?

Firefighter1The Wikipedia page says Two F-16 fighter pilots from the 121st Fighter Squadron of the D.C. Air National Guard, Marc Sasseville and Heather "Lucky" Penney, were scrambled and ordered to intercept Flight 93. The pilots intended to ram it since they did not have time to arm the jets; this was in t...

7
Q: Adjusting table rows to a tikz figure

DamitrI have a tikz figure in which a table is embedded within the horizontal lines drawn in the figure. I need to adjust the rows of the table according to the figure placement. I tried adjust the table spacing manually but it does not produce a consistent result. Only the last row is somehow aligned....

8
Q: How to remove bluetooth device by clicking "x" when there is no "x"?

stevecI'm following instructions on what to before you sell, give away, or trade in your Mac and when attempting step 6 (Unpair bluetooth devices), I attempt to 'move the pointer over device that you want to remove, then click the remove (x) button next to the device name'. But there is no remove (x) b...

6
Q: Why is it not a checkmate?

Cagnus MarlsenI am new to chess. I have tried to learn checkmate from the video lesson in chess24 website. There, in one question, it marked my answer wrong and said that it was not checkmate. Can anyone please explain the reason ? I do apologize if I asked anything stupid. Thanks in advance.

2
Q: Getting back from the Moon

GergelyThis link describes the way back from the Moon surface to the orbiting spacecraft. But how that spacecraft got back to the Earth? It is a long journey. How much rocket fuel was needed, in terms of tons? Where is a technical description of this?

3
Q: What is the most accurate translation of the word 'dukkha'?

The White CloudThis question is a sequel to my previous question about First Noble Truth. It seems that there is discord about the exact rendering of the word 'dukkha'. Sorry if I sound like a pedantic dou*h. I am just trying to understand it clearly. So the answer I received in this link and this link translat...

5
Q: When was the last time the US had the highest GDP per capita?

SwissieI never associated the United States with the label of the richest country in the world so it greatly surprised me that according to some estimates there was a time when the U.S. had the highest nominal GDP per capita. What was the last year this was true? To exclude the ministates let's only con...

12
Q: What if both wheels were powered by pedalling?

ThymeTravelOnly the rear wheel of a bike is connected to the drivetrain in order to propel the bike forward. I assume the choice of rear wheel instead of the front wheel is for stability (e.g. avoiding 'fishtailing' and other problems). However, would there be any potential benefits if, somehow, both wheels...

4
Q: Does the "buck" of a line simply mean the U.S dollar aka public funds?

KentaroReading this article, there is a line, The coronavirus could still be contained, Hotez claimed, but that would require “leadership at the federal level, and there was never an interest or curiosity for the federal government to lead this,” a reference to Trump’s passing of the buck to governors ...

3
Q: What does "bring in" mean here?

Peace The left accompanied it, but not simply like a shadow: it stopped, paused for a few bars, brought in the right hand again, picked up the melody from it, continued alone, then threw the melody back to the right hand. I searched online dictionaries for the verb bring in but the meanings don't fit...

11
Q: How to provide knowledge to players?

ggutenbergI've read a lot of articles on player vs. character knowledge, where the crux of the article is always that players know more than their characters, and metagaming is an issue. For good or for bad, I have the opposite problem. My players don't study the source material, and are effectively blan...

6
Q: Inverse transform sampling - CDF is not invertible

RobSuppose the cumulative distribution function $F$ is given but not invertible to use the inverse transform sampling technique (to compute $X=F^{-1}(Y)$). Do we have other alternative methods? I would appreciate to know the name of all possible methods...

9
Q: Descending dungeons of positional systems

AndrewThe sequence discussed in this challenge is a variant of the Descending Dungeons sequence family. Specifically, the sequence generation rules: (A_b = A's base 10 representation read as a base b number, A = A_10) A(0) = 10 A(n) = 10_(11_(12_(...(n+9)_(n+10)))) Your goal is to make a program which...

6
Q: How would you fix this cabinet not opening all the way?

Tina HoI’d like to see what I can do to fix this very annoying problem I have with one of the cabinets in my kitchen. Whoever installed it didn’t take into account the pillar behind the hinge, so it’s only able to swing open to about 50 to 60 degrees out rather than opening to the full 90 degrees or mor...

5
Q: Submitting more than three letters of recommendation to a math PhD program

GeometerI will likely be applying for PhD programs in mathematics. Several of the schools I intend to apply to state that they require ‘a minimum of 3 letters’. Presently, I have three solid letters from well known professors in my current institution, as well as a fourth letter from a professor from a d...

4
Q: How should I understand and translate "закатить истерику"?

MitsukoSome time ago I took a test in which I had to translate some short texts from Russian into English. One of them contained the following sentence: По приходу домой она закатила истерику. My solution was this: Upon arriving home, she had a bout of hysteria. My translation was marked as wrong, b...

4
Q: Why did Paul call a stranger "Lord" in Acts 22:8?

Tony Chan Acts 22:8 "'Who are you, Lord?' I [Paul] asked.

6
Q: Why do even completely illiterate persons, who speak their national language poorly, speak their local dialect with perfection?

SantiBailorsDisclaimers: I have no linguistic knowledge whatsoever, I'm just fascinated by these subjects. Also, I will use the word "dialect" due to my lack of a better word, although I see that the description of the "dialects" tag talks about "mutually intelligible" while the things I'm talking about don'...

2
Q: Reasonableness of Micropiles

KronimiciadIn a few of Isaac Asimov's stories, including The Martian Way, he uses water as a reaction mass to provide sub-light travel, and he mentions that the water is heated using "micropiles". Leaving aside the concerns of wide-scale industrial production of fissile material, is such a technology feasib...

6
Q: The Combat time vs Real time

DavisSo I was playing yesterday and our party had been wandering through tunnels and the DM said there was some noise in the distance. So one of the players illuminated an object and threw it down the winding corridor about 80 feet from where my elvish player was at (I had just stepped through a door ...

7
Q: Is it okay to take a cubic Monkhorst-Pack k-mesh for a non-cubic supercell in a DFT calculation?

Hitanshu SachaniaAssume that the numbers of k-points in each direction are sufficient. Example - Lengths of lattice vectors: $2\: 2\: 4$ Required k-mesh: $9\times 9\times 5$ Would a $9\times 9\times 9$ k-mesh work? Will it affect the calculation in any way? Intuitively, I would think it wouldn't affect the calcul...

8
Q: Tikz image of normalizing flow

CasimirI'm trying to recreate this image in TikZ. Here's what I have so far. I'm struggling with how to display the probability distributions below the znodes. \documentclass[border=1cm,tikz]{standalone} \usetikzlibrary{positioning} \begin{document} \begin{tikzpicture}[ node distance=2, flow/...

5
Q: What type of white hard thing grows on lobster

001001I have no idea how to explain it. It looks like mini white volcanoes growing on a lobster shell. Is it bacteria or parasite?

4
Q: Can a linear regression model without polynomial features overfit?

Tim von KänelI've read in some articles on the internet that linear regression can overfit. However is that possible when we are not using polynomial features? We are just plotting a line trough the data points when we have one feature or a plane when we have two features.

4
Q: Where is the Perseids meteor shower coming from?

ScienceDiscovererSwift–Tuttle Comet has orbital period of 133.28 years. Yet, people say that debris and dust from this comet causes this meteor shower. This does not make any sense. Or do they want to say that from 1992, every year, for 28 years Earth picked up debris left behind so many years ago while passing t...

7
Q: Why is the mass of a Hydrogen atom lower than the sum of masses its parts?

ChandrahasI understand that when the electron and proton are arranged to form a hydrogen atom, the potential energy of the system is lower than when separated. As a result, according to mass-energy equivalence, the mass of the hydrogen atom is lower. However, my question is about the physical process throu...

5
Q: Trying to identify the source of a Roman short story about a senator and a slave

4gus71nA few days ago I remembered a short story that I was taught in high-school, and I'm trying to find from what book it comes from. The story goes something like this: A Roman senator was at a dinner party, he was bored of the people there because he thought that no one matched his intellectual stan...

3
Q: What is meant by "vastness of space ... now filled [by] a volume of a hundred million years"?

JubblesI am reading the book Cosmic biology: How life could evolve on other worlds (citation below) and do not understand the meaning of the following paragraph from page 4 (emphasis mine): It took 200,000 years or more for the universe to cool to 2700 °C, a termperature at which the protons and neutro...

5
Q: Where is the pilot flying to?

Anthony Ingram-Westover Barry is a pilot for the mafia. Due to his unique cargo, his employers have to give him his destination in code. Everywhere he has flown, from Edmonton to Frankfurt to Atlanta has had an international airport. After completing each job, he has always received a nice bonus. In fact, his last job ...

3
Q: Using gustar in future tense

Mark SegalI'm studying Spanish and I'm having some hard time using gustar in future tense. I do understand that the verb is reflexive and that gustarse would translate to to please someone, so simple sentences like al gato le gusto (the cat likes me) vs me gusta el gato (I like the cat). A common question ...

5
Q: Is it feasible to use an RC car transmitter/receiver to control an RC plane?

ThatCoolCoderI am a beginner to the hobby and I've been constructing chuck gliders out of foam board and card for a few years. I'd like to start making models that I can control, but I don't have much of a budget. I do, however, have a hobby-grade RC car with a receiver/esc/servo combo and matching transmitte...

6
Q: Shouldn't tidal locking be impossible for a satellite that has a considerably eccentric orbit?

user34121This popped up into my mind just now. The Moon is tidally locked to Earth, and also has a significantly eccentric orbit. This means that its orbital velocity near periapsis is considerably faster than its orbital velocity at apoapsis. Thus, for the Moon to always show one side to Earth, its rotat...

1
Q: Auto white balance shifting from cooler to warmer during photo shoot

Mike 5853When shooting portraits or still life images the auto white balance seems to shift image from a cooler to warmer temperature and I’m not sure what’s causing it. Both flash and natural light. Nikon D780 in auto white balance, JPEG. It happens with different lenses, Nikon, Tamron as well. It’s almo...

7
Q: Character Impersonator travels back in time and accidentally takes over life of famous person he idolized

NJohnnyWhile reading another question I was reminded of a TV show or Movie I recall seeing (Strongly suspect it was a TV show, maybe one of the recent Twilight Zone series or Outer Limits type shows. An Impersonator of a famous singer or movie star (i.e. Elvis impersonator or Charlie Chaplin, Marilyn Mo...

6
Q: Does my rear tubular tire need to be replaced?

DrewskiiiDoes my rear tubular tire need to be replaced? It still holds air but I am concerned about my ride safety

4
Q: Why does a Migo/ Migu Work?

talmidforlifeThere is a Halacha of Migu, which comes up in many masechtot. See here. My questions is: logically, it seems that a Migu should work and it makes a lot of sense. However, is there a special verse that we learn this from, a Halacha L'moshe Misinai, or just a logical argument? (I know there is a Ge...

3
Q: What is the largest proper cubesat?

uhohThe sizes of Cubesats are measured in "U" units of volume. Each U is nominally a cube of something like 10 to 12 cm on a side, depending on the specific deploying mechanism it's approved for. 1U to 3U are popular sizes, the MarCO deep space cubesats were 6U. Question: What is the largest proper c...

2
Q: Is voltage reduced when load increases

X BuilderWould the voltage of a power source decrease if multiple loads / more load is added to it? I am researching battery types, and wanted to know, if I added enough load to a battery how much / would there be any voltage drop? Example: I have a 12v set of batteries in series. the batteries rated curr...

3
Q: Why is this looping?

KeltariI am trying to do something very simple. I want the LED to fade from full brightness to off. This works... However, the LED turns back on to full brightness and fades again, in a loop. I am not sure why. I think I am missing something obvious. Once the legThreeBrightness decrements to 0, not...

7
Q: Reincarnation effects on feats and ability scores

Sum of e D piHow does reincarnation affect feats and ability score increases? I'm running a campaign with a group of fairly high (16th-18th) level characters and the only "bring back the dead" option they currently have (or are likely to have for a while) is Reincarnate. The Reincarnate Spell states: The mag...

3
Q: Bypass cap on reference voltage?

zsky3333For a voltage reference providing a reference to multiple devices, ADC, DAC, instrumentation amp... would there be some benefit in placing bypass caps right at the reference input to these devices even though they have high input impedance?

6
Q: Is a caster of Gentle Repose aware that a creature under the effects of Feign Death is an invalid target?

Oblivious SageAlice (a wizard) & Bob (class unspecified), are planning an elaborate prank on Carol (a cleric). Alice casts Feign Death on Bob, and then wails about how he has been slain by a horrible monster/curse/whatever. Carol, who is for some reason friends with these jerks, comes running. Carol does not r...

3
Q: Go question about eyes

Sriswaroop KoundinyaI just learned how to play GO today, and I was stuck on one thing in particular. This was the board state: As you can see on the south-west corner (close to A1), I tried to capture my opponent's (which is a computer, 25 kyu) group of pieces. But I found out that I couldn't place my pieces on tho...

2
Q: Time quantization

Blue5000There is no evidence to support that time is quantized. So wouldn't the use of discrete values like $dt$ in calculus suggest time is quantized and comes in discrete durations of $dt$?

10
Q: Despite slain monsters continually yielding gold coins, why does gold's trading value seem to remain constant over the years?

user6760Set in fantasy medieval times, monsters can be seen loitering around the kingdom. People discovered that the slain carcasses of these monsters contain a certain quantity of gold coins. The rest is history. It seems these monsters continually respawn, so potentially there is no limit to the amount...

4
Q: Space Opera book with a female lead character that has immense mind powers. Written around 2017 -2019

BeckyThe female lead character has her own ship but it's broken. She is rescued by another ship whose captain has two heads(maybe conjoined twins). She actually is being chased by some empire because she escaped from them earlier. They trained her to be a weapon of destruction using her telekinetic po...

4
Q: How to get the Taylor series of implicit functions

MontevideoGiven that the equation $x+\frac{1}{2} y^{2} +\frac{1}{2} z+\sin (z)=0$ can determine an implicit function $z(x,y)$ at {0, 0}, I now need to expand the implicit function $z(x,y)$ to a fourth-order Taylor series at {0, 0}. How can I do it? x + 1/2 y^2 + 1/2 z[x, y] + Sin[z[x, y]] == 0

4
Q: Acquire::By-Hash apt option does not work

RemoddyI'm trying to make apt-get use Acquire::By-Hash option, so it will download packages identifying them by cryptographic hash, not by package version. This should prevent race conditions and "Hash Sum Mismatch" errors happening sometimes while trying to apt-get install something. I can't make apt-g...

5
Q: Path from variance of product to product of variance and expectation

yuzhouIn one paper authors tell: We let the initialised elements in $W_l$ be independent and identically distributed (i.i.d.). We assume that the elements in $x_l$ are also i.i.d. and $x_l$ and $W_l$ are independent of each other. Then we have: $$Var[y_l]=n_lVar[w_lx_l]$$ We let $w_l$ have zero mean. ...

3
Q: Where does Macbook Pro store wifi information?

Nathan DulleaLast December I connected to a wifi network with a password. A couple weeks ago I got a new hard drive for my computer. Today, I reconnected to that wifi network (this is the first time since I changed my hard drive) and my computer automatically connected to it. I expected the computer to lose n...

1
Q: Can I ask to explicitly state that the internship offer cannot be revoked in their offer letter?

Aditya ShrivastavaCan I ask my employer to confirm upon one another point explicitly in the letter which states that the offer made by him/her shall not be revoked or if her/she could specify the only circumstances under which the offer can be revoked.  This is solely due to the fact that there has been a signific...

1
Q: Why is 或 used in 将在45天后禁止任何美国公司或个人与[ByteDance and WeChat]的相关交易 instead of e.g. 和?

Becky 李蓓I read the following political article about Trump's executive orders in relation to TikTok and WeChat. 原因是当地时间6日,美国总统特朗普签署行政令,称抖音海外版(TikTok)和微信对美国国家安全构成威胁,将在45天后禁止任何美国公司或个人与TikTok母公司字节跳动以及腾讯控股涉及WeChat的相关交易。 My translation: [The] reason is [at] local-time 6-th [of August, 2020], USA president Tr...

1
Q: Why does Catullus use "odi" instead of "odio" in Catullus 85?

DrewI think the question is straightforward, "odi" to me appears to be the imperative while "amo" is the singular 1st p. Is this some construction I am unaware of with "et"?

2
Q: Object oriented approach for snake game in C++

Sakitha NavodI started to code in c++ recently and my goal is to develop games using c++. After learning basics I tried to implement my own version of snake console based game in c++ with the help of some online tutorials. I used OOP approach. I would like to hear ideas about this code and what mistakes i hav...

1
Q: How to change "column" width in align environment?

Asier R.I have the following in the align environment: \begin{align} \bm{i}_t&=\sigma(\bm{W}^i\bm{x}_t+\bm{U}^i\bm{h}_{t-1}+\bm{b}^i)&&\text{Puerta }\mathit{input}\nonumber\\ \bm{f}_t&=\sigma(\bm{W}^f\bm{x}_t+\bm{U}^f\bm{h}_{t-1}+\bm{b}^f)&&\text{Puerta }\mathit{forget}\nonumber\\ \bm{o}_t&=\sigma(\bm{W}...

5
Q: In a piano score, what is the meaning of a V with a dot in it

CeSingeIn a beginners piano scorebook, under the last cord there is a V with a dot in it. I searched but can't find what it could mean. In case that matters, it's a French book. There is no other place in the score where I can find this symbol. What should I do with it or how to play this? Thank you!

 
5:28 PM
1
Q: Allowing Disengage for free

Dan WI'm the DM, and I'm concerned that combat feels pretty static. As I understand it in RAW: Once you've reached melee range, moving further away will provoke an opportunity attack, unless you disengage disengage costs an action (unless you have a feature that lets you do it for free) This seems t...

2
Q: How do I run a function from a custom script from the Python Console?

user3024701I found a script with an instruction to run it, but it doesn't work for me. Script is working for other people but if I run it the way it's described I only get errors. It says: Just copy the code into a new file on blender's text editor, call the text file apply_with_shape_keys.py, and then, se...

 
5:58 PM
3
Q: Is there a reason Psalm 136 has exactly 26 repetitions of "For His mercy endures forever"?

GlorfindelPsalm 136 comprises 26 verses, each ending with For His mercy endures forever. (NKJV) Our pastor stated this morning that 26 was a special number in this regard, but didn't clarify this. Now 26 is of course the number of letters in the Latin alphabet, but that didn't exist when the Psalm was wr...

4
Q: couple of questions in probability

DaveI'm trying to solve some questions and I'm not sure if I'm solving it correctly. Question 1: " A boy participating in a game and throwing normal dice, if the dice shows the number 6 the game is over. Else, the boy need to wait the number of minutes the dice shows. For example: if the dice shows 4...

 
6:16 PM
3
Q: Why is 'dukkha' included in one of the three marks of existance?

The White CloudIn this link and this link the Budha says that "there is stress" (or suffering or whatever your preffered translation of dukkha). The Buddha does not say that suffering(dukkha) is inherent or innate characteristic of existance. According to Second Nobel Truth, this dukkha is caused by desire or c...

 
6:28 PM
5
Q: Horizontal Centre of mass of semi circle coming as non-zero for some reason

DDD4C4UCentre of mass is defined as, $$ \overline{x} = \int x \rho dA$$ for a semi circle, above the x axis, $$ \overline{x} = \rho \int_{0}^{R} \int_{-\sqrt{1-y^2} }^{\sqrt{1-y^2} } x dx dy$$ This becomes (my origin is at center of semi circle) $$ \overline{x} = \rho \int_{0}^{R} (R^2-y^2) dy = \rho [ ...

 
6:46 PM
3
Q: Forced mate: 2 queens vs king

HariPrasad PoilathOn the board, there are 2 queens (of the same color) placed on random squares. The opposing side has only a king, placed on a random square (and not in check). There obviously exists a mating sequence. What is the biggest possible 'n' such that there is a forced Mate in 'n'? In other words, given...

1
Q: Organise arrows in organigram

moumou85I made a organigram and everything works well except an arrow that I can not put it in a precise position as in the photo This is my code : \documentclass[a4paper,12pt]{book} \usepackage[left=3.5cm,right=2.5cm,top=4cm,bottom=4cm]{geometry} \usepackage{tikz} \usetikzlibrary{shapes,arrows.meta,calc...

 
6:58 PM
2
Q: Why can't we see Saturn's phases from earth?

JonasIn the Astronomy Picture of the Day from August 8, 2020 ("Crescent Saturn"), the caption states From Earth, Saturn never shows a crescent phase Why is this? We can observe phases on planets such as Venus which have an apparent size a lot smaller than Saturn. Saturn is not tidally locked to the ...

7
Q: Interviewer's Room

Rahul Verma You are James and four of your friends (Bjarne, Eich, Rossum, Ada) are called for an interview. There are n interviewers, and they can each serve one person at a time, alphabetically. Each round of interview takes 20 min. Let's take n = 2, So, the first round started with Ada and Bjarne, takes...

 
7:10 PM
2
Q: Vimscript: evaluating the contents of a variable

PSkocikI know I can evaluate a (visually) selected piece of vimscript by yanking it into a register and then executing the register with :@registerName. Can this be done without clobbering a register e.g., by somehow executing the contents of a variable? I've tried: function! VimEval() let l:curQ = @"...

 
7:40 PM
2
Q: How to call a person who seems to always predict correctly the unfortunate things?

Glu3You know, the friend that everyone in the room will shut his mouth before he finishes his sentence knowing that it will very likely to become true. Tom: I don't think this nice weather will last very long. Everyone: Shut up, it will rain now if you say that.

4
Q: Is there a possibility to change the initial crystal system during full geometric relaxation?

Achintha IhalageOne of the challenges of modelling completely new material using DFT is the selection of initial geometry. Usually, an experimental structure (cif) which appears to be similar to the new material in question is selected intuitively (correct me if I'm wrong) and several such selections are made to...

1
Q: Space between characters for summation cases condition

ArunI am using the following code for summation with cases: $\sigma(x) = \begin{cases} 1 if \sum_{k=1}^{n} x_{k} > \theta and i = 0\\ 0, \textit{otherwise} \end{cases}$ However for this code, there are no spaces between the characters when the LaTeX code is compiled. How do I insert space be...

 
7:58 PM
2
Q: The meaning of 打卡

KanturaThe primary meaning of 打卡 is to swipe a card, clock in, punch a card, etc. But I see it used in another context which I can't quite put my finger on and when I ask Chinese people about it they don't know what I'm talking about. They just give me the primary meaning. So I started collecting exampl...

2
Q: Is there a chance to get in math phd for a physics student?

Ken.WongLet me introduce my background first. I am now a mathematical physics master student in Germany. I obtained my Bachelor in physics in Asia, used to be a M.Phil student in my undergraduate's university, but then I decide to quit, switching to Germany. I don't take many math course except calculus,...

 
8:10 PM
6
Q: To which year back in time was Hawkeye sent during the test run for the Time Heist?

ShreedharIn Avengers: Endgame, when the test run for the Time Heist is conducted, Scott Lang drops out as he felt nervous. Clint, at the time, volunteers. It's quite apparent that Clint was sent to a pre-Snap time. However, is there any indication as to which exact year (and/or date) he was sent to?

2
Q: Why did Palau choose to establish relations with ROC and not PRC?

MadhurjyaAfter independence, Palau had a choice to choose between ROC and PRC. PRC probably had more money or power, considering the size of their land and more number of nations were having relations with PRC by then. Palau chose to have relations with ROC. Why? Abbreviations: PRC - People's republic of ...

6
Q: Are children reincarnated as adults?

PureferretI was considering porting a character from an earlier edition of the game, who had been reincarnated before becoming an adult. This is purely backstory, however it got me thinking about how this would work in game. I don't know if the spell changed between editions, or if I had missed it entirely...

 
8:28 PM
1
Q: Using container element in form widget

James ButlerI want to build a widget for a own field type. In the function formElement() of my widget I want the elements wrapped in a div. For this purpose exists the container element. So I build my form: public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, For...

 
8:40 PM
1
Q: Is the sentence "Мусоропровод забит жильцами" totally ungrammatical in Russian?

AlexanderI want to ask if the sentence "Мусоропровод забит жильцами" is completely ungrammatical (and why). As I know, we can surely say: "Стихотворение написано поэтом", "Роль сыграна актёром", "Очаг возгорания потушен пожарными" and so on. The structure is as follows: inanimate noun in nominative + pass...

 
8:58 PM
1
Q: Solving the heat diffusion equation with source term

Nishant Kumar GuptaI am trying to solve the 1-D heat equation numerically with a variable source term. The system is basically a tank containing styrene in which it polymerizes to liberate heat. I have assumed that the cross-section of the tank is much smaller compared to the length so any variations in the y and z...

6
Q: Make Riley Riddles, Not War

BassWhen a famous man sets out With a frightening weapon in hand In between remain I, devout Against killing making my stand What am I?

 
9:10 PM
2
Q: Converting multiple rows to one row

Asrar Ahmad EhsanI have the following data coming from Finger Print devices, Each In and Out of employees are recorded. UserId CheckTime CheckType ------ ----------- ----------- 2 2020-08-03 08:15:12.053 I 2 2020-08-03 16:00:00.053 O 2 ...

2
Q: How can I calculate the uncertainties in magnitude like the CDS does?

SwikeWhen you check an entry of the Gaia DR2 stellar catalogue in Vizier, for example this one, you can see that there is a value for the G magnitude (in our case 18.0733 mag) and a value for the uncertainty on that (in our case 0.0023 mag). The thing is that the G value is part of Gaia DR2 but the un...

 
9:28 PM
1
Q: Conservation of energy in quantum tunneling

doidaoBy this question, a particle can tunnel to inside a potential barrier. One aspect of this process that was not addressed in the answers was the conservation of energy. Motivated by this question, I am under the impression that having a particle inside a potential barrier would make for a higher e...

5
Q: What is the interaction between mold earth and create bonfire?

Sam LacrumbIf I cast create bonfire in a 5 foot unoccupied space, and then, in the next round, cast mold earth to excavate that same area creating a 5 foot pit underneath the fire -- does the bonfire fall or stay at ground level? This came up in game. The bonfire is magically created and does not need to b...

 
9:40 PM
1
Q: End-to-end Schengen and D-type visa; what could worse happen if I don't re-enter the country?

onurcanbektasI have a Schengen visa which ends on the 15th and my D-type visa starts on the 16th, for Germany. Given the current situation of the pandemic, I don't want to go to my home country and come back. I've asked various officials whether I need to go out of the country and come back; border police sai...

 
9:58 PM
1
Q: Posting copyrighted images on a government complaint

David BlomstromImagine that I want to file a complaint against a candidate for public office in Washington State who I believe has violated campaign laws. If I file a complaint with the Public Disclosure Commission, can I legally download images from the candidate's copyrighted website and add them to my compla...

 
10:28 PM
1
Q: Can you Use the Rest API to query a custom database table

petebolducI am new to the wp platform and just learned about the Rest Api. I am creating a plugin that will allow the user to access a note keeping system which I plan to manage in a custom database table. Is it possible to manage the CRUD through the Rest Api or is the Rest Api reserved for the core WordP...

1
Q: Are there any successful conlangs using information density as a design goal?

LouI'm interested in the idea of a conlang which could be used to create extremely information dense statements - such that, for example, a single word could be built up from morphemes to express a complete sentence. It would probably be a highly agglutinative language, similar to Eskimo-Aleut langu...

1
Q: Why exactly does curiosity's RTG make more electricity on cold days?

uhohThere is a fascinating factoid in this answer to MMRTG- thermal and electrical output: The electric power of the thermocouples depends on cooling influenced by the environment. On a cold day on Mars it may be 120 W, on a warm day only 110 W. (At the beginning of mission). I'd never though about...

 
10:40 PM
4
Q: Convert Decimal to Fraction

user3756068This code below converts number from decimal to fraction. I don't know if there's a better way or better methods to do this job so any advice would be appreciated. Edit: note this code is not for precise calculation. I round decimal part to nearest multiple of 5 to get more straightforward numbe...

2
Q: What actually happens to electrons in a circuit when work is done at a component?

ramoseAs the title. Between when voltage is higher; before the electrons reach the component, and afterwards.

 
11:10 PM
1
Q: Can the Termux environment be put on an external SD card?

SrulyI would like to install my termux environment (usr folder) to an SD card. is this possible? I have seen this post Can I install packages to external SD card on Termux in Android?. From what I understand the problems mentioned there is only if you want to install individual packaged to the SD card...

1
Q: How does the American PhD system works for foreign students?

Mauro GilibertiI'm a MSc Theoretical Physics student from Italy, and I'll most likely graduate around the end of next year: for the Italian academic system, this means that I'll be ready to try to get into a PhD program (after 3 years of BSc and 2 of MSc). I'm considering other countries' universities too, and ...

1
Q: Alert for event returning 'Undefined'

SFDC AlexParent Component :- <aura:component implements="force:appHostable" > <aura:handler name="beerSearchEvent" event="c:SearchEvent" action="{!c.handleBeerSearchEvent}"/> <div> <c:HeaderComponent tagLine="Beer Explorer" message="For all fun to be..."/> </div> <c:BeerSearch/> </...

 
11:28 PM
3
Q: Never the Twain shall meet – conflicting accounts of sewing practices

AlexIn Chapter Thirteen of The Prince and the Pauper we have the following observation about sewing practices: He did as men have always done, and probably always will do, to the end of time – held the needle still, and tried to thrust the thread through the eye, which is the opposite of a woman's w...

3
Q: social network analysis - relations between people with weights

czaduuI asked this question on datascience.stackexchange but they directed me here. I have a social network represented as a set of people $S$ and individual weights for each of person (weight is the cost of person). I also have defined relationships between these people (whether people know each other...

 
11:40 PM
2
Q: What were the legal consequences of "I appeal to Caesar!" in Acts 25:11?

Tony ChanIn https://christianity.stackexchange.com/questions/68291/in-acts-2510-paul-appeals-to-caesar-what-aspect-of-roman-law-citizenship-was-h: About two decades before the birth of Christ, Rome passed a law, the lex de ui publica, which forbade any magistrate to kill, scourge, chain, torture, or even...

1
Q: When do SARSA and Q-Learning converge to optimal Q values?

cogito_aiHere's another interesting multiple-choice question that puzzles me a bit. In tabular MDPs, if using a decision policy that visits all states an infinite number of times, and in each state, randomly selects an action, then: Q-learning will converge to the optimal Q-values SARSA will converge to...

 
11:58 PM
6
Q: Mode length of a sentence

Rahul VermaThe task is simple. You are given a string with alphabetical words (say "Hello world, this are tests"). You have to return the mode of the lengths of words in the string. In this case, output is 5, as it's the most often length of words in the string. Definition of an alphabetical word (for this ...

1
Q: When to use thaw and melt?

我的不好Thaw seems like thawing something,e.g.food. Melt should be ice.Bit I read up some dictionaries and some of their definitions are different.Can anyone help me with this?

 

« first day (800 days earlier)      last day (1358 days later) »