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00:03
3
Q: What happened to the boa constrictor that Harry let out in Harry Potter and the Philosopher's Stone?

user13267In Harry Potter and the Philosopher's Stone, Harry performs accidental magic and lets a boa constrictor out of it's cage in a zoo. What happened to it? The story seems to have just let it run out to Brazil. Did the accidental magic reversal squad show up to get the mess fixed? Any canon level ans...

2
Q: Built a function to search a dictionary using key or value. Looking for feedback on if there is a better approach to this

mankand007I'm building an error handler which handles different kinds of errors arranged hierarchically. As part of that, I need a way to figure out what errors to send a recipient based on what their subscription level is. The below function gives me what I want, but it feels a bit crude to me. Please adv...

00:32
1
Q: US ultralight licence for PPL pilot

MrMartinI hold a European PPL(A) licence, and would like to fly an ultralight in the US. In my home country, I'm not allowed to pilot an ultralight. To do that, I need a range of tests and a new licence. What about the US? Edit: I'm not going to a sparsely populated place like Alaska. What isn't clear to...

3
Q: What is the right measure for the upper half-plane?

user99432I think my question depends on the context of the problem so let me give you some background. I want to measure subsets of $\{(x,y)|~y>0, x\in \mathbb{R}\}$. I'm not involved with differential geometry. So what is the right measure for the upper halfplane. If one identifies it with the hyperbolic...

TeX
TeX
00:44
2
Q: Problem with multicolumn table

KorneWhat is the best way to get a table like this in LaTeX?

2
Q: RegionFunction inside Show

Ulrich NeumannI would like to clip a Show-command using Show[{pic1, pic2,...},RegionFunction -> Function[{x, y}, RegionMember[reg] {x, y} ]] but Mathematica won't evaluate. Is there a simple workaround to use RegionFunction inside Show? Thanks!

01:02
1
Q: Copy the result of C-x C-e instead of inserting it into buffer

ArktikIs there a builtin mechanism that copies the result of C-x C-e rather than inserting it into the buffer with the non-negative prefix. I think this would have been more useful by default.

01:21
1
Q: I don’t understand the meaning of “冗談 通じんじゃん” in below sentence

farhad gharleghiThe whole sentence is: “笑える! コタってつまんない男だと思ってたけど案外 冗談 通じんじゃん。” I checked on the internet and found “冗談が通じる” which means He or she gets the joke. But in the sentence “冗談 通じんじゃん”. the word “じゃん” is the colloquial contraction of “じゃない” and sometimes it means “actually”. I‘m confused what is the...

3
Q: What is the thing I am pointing at with the red arrow in the picture?

pilot162What is the thing I'm pointing at with the red arrow in the picture? This is the bottom of the fuselage of a DA40NG aircraft and where the right wing attaches to the fuselage. As it is written in the photo, we see the fuel cooler inlet and outlet sections. But towards the right, where the wing is...

1
Q: Do tea filter bags filter important nutrients?

ValikojanI'm talking about the classic paper tea bags (sold empty) that you can buy and then put whatever you want in; sometimes different sizes are available for cups vs teapots, etc. Yes, I do realise most "pre-filled" tea bags like Lipton have bags made from roughly the same material, but I don't know ...

GIS
GIS
3
Q: QGIS: Compare two concatenate fields and add similar strings to new column

SebastianI am doing research on how planned improvements in urban green will likely affect biodiversity using QGIS. Each form of urban green has a list of so-called references species, species that are important for the health of that particular green space. I also have a list of the species that have bee...

1
Q: Does this sentence make sense? 我打算工作在一个网站会完了在四月十五

AdriftI thought something like: 我打算工作在一个网站会完了在四月十五. Pinyin Wǒ dǎsuàn gōngzuò zài yīgè wǎngzhàn huì wánliǎo zài sì yuè shíwǔ. English: I'm working on a website that will be finished by April 15th. Even though I feel like my version is wrong, can someone point out why? Google Translate doesn't agree with...

CS
CS
01:46
2
Q: Why isn't the American r considered a vowel?

Wesley InselmanAs a native American English speaker from the Northwest, whenever I isolate the r in words like "right" or "rope" it's always /ɚ/, the same as the r in words like "first" or "girl" but the "ir" in first and girl is considered an r-colored vowel, but the r in "right" and "rope" is not considered a...

02:05
1
Q: Must a man divorce an adulterous wife

Raul Valdez Jr.Must a man divorce an adulterous wife? I ask as I am unaware of the halacha, I know Hosea was commanded to take back his after he was commanded by G-d to marry his adulterous wife.

1
Q: Can an Indian citizen visit India with less than 6 months passport validity left?

ishfaqI am an Indian citizen working in Abu Dhabi. I plan to visit my family in India for one month in June 2023. My passport expires on 25th Sept 2023, appx 3 months after my arrival. Will I be allowed to enter India? Will I be able to exit and return to Abu Dhabi after my vacation in June?

RPG
RPG
5
Q: How do we determine whether an awakened creature/plant will stay after 30 days?

Michael CorteseAfter 30 days, the charm affect ends in an awakened creature or plant; it says, they will determine based on how you treated them if they like you or will stick around. Should that be a roll, or should it be purely based on how they were treated? For example, an abused homeless animal was awakene...

02:38
2
Q: Does my place of birth need to match my birth certificate for applying for a US Passport?

Rob RoseI am applying for a US passport as a natural-born US citizen. On my passport application, I listed the city and state I was born in. I was just looking at my birth certificate however, and it lists the county I was born in, rather than the city. Will this cause the Post Office or the State Depar...

RPG
RPG
3
Q: Can an army of bards with lyres of building make a castle wall invulnerable?

User 23415The item Lyre of Building is a rare magic item from Tasha's Cauldron of Everything: Lyre of Building Wondrous item, rare (requires attunement by a bard) While holding this lyre, you can cast Mending as an action. You can also play the lyre as a reaction when an object or a structure you can see ...

1
Q: How to make rsync dst timestamp reflect time at which content was last transferred from src?

TomassoI am rsyncing a file from src to dst across a network. I’m navigating the many rsync options on the Linux man page, and need some help please. Desired timestamp behavior: dst file modification timestamp should represent the time at which content was last added by rsync transfer. dst file modific...

6
Q: Isn't every theory or model wrong?

ShardulI'm currently in class 12 and I was about different models of atoms in my school chemistry book and there were like 3 or 4 atomic models Rutherford's model, Thompson's model , Bohr's model then finally Quantum Mechanical model. After reading every model it has limitations and just after some year...

2
Q: How to scale or extrude selected edges to the outside?

max video: https://drive.google.com/file/d/1qnn96gvkQz9cFqGJDtE6-EbUUP-I_Oul/view?usp=sharing .blend file: https://drive.google.com/file/d/1cxfsIRXvasJL4nldaWupl2wHCU-iOY-w/view?usp=sharing I am trying to scale/extrude selected edges to the outside, but can't. I tried: S, Shift Z Alt + S Nothing h...

7
Q: Guessing on straws

lesobrodDedicated to Martin Gardner, taken from his book Background In the old days, the Slavs had a divination method for finding out whether a girl would get married. The girl would clutch six straws in her hand so that the ends would poke out the top and bottom of her fist. Then her friend would join ...

DSP
DSP
02:57
2
Q: Scipy filter analog vs. digital

JosephIt would be greatly appreciated if the usage of the python package scipy's filter (e.g. butter) analog=True argument could be explained. I don't understand what is meant by this (any signal being processed by scipy in python on a computer is discrete and will always be digital?). I an pretty fami...

3
Q: Derivative of the Dirac delta function

Preetham KarkiSo, I was reading about the Dirac delta function and how its differentiation works. So, pretty much all texts and online sources I saw, define it using the integral: $$ \int_{-\infty}^{+\infty}x\dfrac{d\delta(x)}{dx} dx= \left. x\delta(x)\right|_{-\infty}^{\infty}-\int_{-\infty}^{+\infty}\delta(x...

 
1 hour later…
Law
Law
04:33
1
Q: Do all legal persons have human rights?

Seeking answersFor example, a corporate legal person can be proceeded against with criminal charges. Instinctively, one would be inclined to apply such "human" rights as that to a fair trial in protecting any defendant being proceeded against in a criminal context. But must the bar be quite as high for artifici...

1
Q: Here comes the sun auf Deutsch?

147pmThere's a song sung by a Slovenian band with German lyrics where I don't believe they've got the German quite right. They're wanting to say "Here comes the sun" just like the old Beatles song, and their version is Hier kommt die Sonne. Which doesn't sound quite right. Again, German is my second l...

DIY
DIY
1
Q: Can I side-mount metal box with holes in the back?

Michael DI would like to side-mount this double gang box as shown to install two switches. My concern is that the 1/4” holes in the back of the box will be a code violation. I have looked at other 2 gang metal boxes but all seem to have these large holes in the back, presumably for mounting the back of t...

1
Q: Which breaker controls the HVAC unit?

rsnI want to inspect the thermostat wiring in my apartment. It's an old White Rodgers so I have to turn off the breaker before removing the thermostat housing. My apartment has an HVAC unit that looks like this: Which breaker controls it? Does the 'heat' breaker control the internal unit in my apa...

2
Q: Would lightning bolts be effective against modern military vehicles?

RhymehouseIn my setting, wizards from a pre-industrial fantasy world come to real life. One of these wizards is a destruction mage recruited by the US military and tries out his talents against modern forces. Her favorite spell is lightning bolt. She simply shoots out lightning at whatever target she wants...

CS
CS
2
Q: Is the "faith" of Hebrews 12:2 referring to the faith of "all" of us, or "each" of us?

pbarneyHebrews 12:2, in part: [ESV] looking to Jesus, the founder and perfecter of our faith [NIV] fixing our eyes on Jesus, the pioneer and perfecter of faith [KJV] Looking unto Jesus the author and finisher of our faith [Greek] ἀφορῶντες εἰς τὸν τῆς πίστεως ἀρχηγὸν καὶ τελειωτὴν Ἰησοῦν Does πίστεως ...

GIS
GIS
05:13
1
Q: Placing the North arrow

mpapecIn the picture below, north arrow should be placed, however it's unclear how to do it since north pole is also in the picture. Please advise on the arrow placement and position, hopefully with reference to gis practices.

TeX
TeX
05:24
3
Q: Problem with a TikZcd between curly braces

CarLaTeXI was trying to answer a question but the TikZcd I would like to typeset is not well vertically positioned between the curly braces (the red lines are drawn to better show the problem): \documentclass{article} \usepackage{geometry} \usepackage{amsmath} \usepackage{tikz-cd} \newcommand{\tricd}[3]...

3
Q: HSA and Concierge Medicine

user1723699I currently have a high deductible healthcare plan and max out my HSA. I am looking for a primary care doctor and have decided to use a concierge doctor. On the doctor's website it says: Insurance does not cover the cost of a concierge medicine fee. It is an out-of-pocket expensive. However, hea...

2
Q: Long distance travel by non-motorised rolling vehicles

chasly - supports MonicaBackground I have lush fertile mountains separated by miles of flat, barren desert. Each mountain is home to a community. The distances between mountains vary from 2 - 20 miles. Every occupied mountain has at least one river that drains into the desert and eventually reappears at the sea after tr...

06:03
1
Q: If I don't want to teach, is there any advantage to getting my CFI/CFII?

HiddenWindshieldThe title pretty much says it all. I'm not a good teacher, and I don't have any interest in instructing students. So, if I'm not going to get a job at a flight school, would getting a CFI certificate actually benefit me? Just for context, I'm a "weekend warrior" that just flies family and friends...

06:30
1
Q: GPL w/ named pipes?

LucI'd like some help/advice regarding a problem I'm facing with licensing options. I'm currently writing software for an open hardware project that use cameras from various brands. I'd like (very much) that my program be released under a GPLv3 license but this is likely incompatible with most camer...

1
Q: Multiple hosts with same ip/subnet seperated by router possible?

Hudson MarineBit of a newb question but just curious if it can be done. Is it possible to have multiple hosts with the same ip/subnet (eg 10.101.30.10/24) each seperated by a layer 3 switch/router, where one of the hosts could be streaming a multicast rtp stream to all the other hosts?? Cheers,

1
Q: Does files in Files app resyncing consume more battery?

ThinkrI am worried it might consume more battery because the files in Files app keep unsyncing and I need to sync them again almost each time I open them. I noticed that whenever there's a cloud with an arrow pointing down icon at the top right of a file, I will need to resync it before opening it. I ...

1
Q: Recover deleted file that was already overwritten

user2402616I'm using Mac OS Ventura. Got a 128GB SSD using APFS. I deleted a pdf from the Trash about a month ago. I used a trial of EaseUS and it was able to recover the file. However, I couldn't download as it was trial software. There was a preview that I kept clicking on. My thoughts were to maybe just ...

DIY
DIY
06:45
1
Q: What can be a replacement for this brand of sink faucet?

Pam GI need to get a replacement handle for one of the sinks in the bathroom which has a broken handle. Handle is acrylic and has a square stem. I can't seem to find the name of the brand anywhere on the faucet-either the back or the front or on the pipes. It seems like an 80s faucet but I may be w...

07:15
3
Q: Would a rogue planet experience more asteroid collisions?

Josh BoneI'm working on a novel where the characters inhabit a rogue planet. Would that planet get hit by more asteroids due to the fact that it isn't orbiting a star? I have a feeling that the distance is negligible, but I can't really find an answer to this question.

2
Q: Visa refused for completely made up reasons. Can anything be done?

user626528So, the answer for my Canadian tourist visa application that I made recently, and I'm kind of completely lost. • The purpose of your visit to Canada is not consistent with a temporary stay given the details you have provided in your application. No idea what this can possibly mean, because I pr...

2
Q: Expected value of a sum of geometric dice roll

GreekMustardWe roll a 6 sided fair dice until the number 3 is received. What is the expected value of the sum of the rolls? What I've done: I defined a random variable $X$ to count the rolls amount. $X\sim G\left(\dfrac{1}{6}\right)$ so we have $P(X=k)=\left(\dfrac{5}{6}\right)^{k-1}\cdot\dfrac{1}{6}$ Then I...

Law
Law
07:31
7
Q: How was the court in Abingdon RDC v O'Gorman (1968 EWCA Civ) aware of Thornton v Cruther & ors (1769)?

Seeking answersAt s23, the court cites Chief Justice Wilmot's decision in the 1769 case Thornton v Cruther & others, which it mentions is "unreported." So how did the court become familiar with the case, much less the content of its reasoning?

07:46
2
Q: Why do the holomorphic functions form a sheaf. Different functions on disjoint open sets can't be glued.

Gary BilkusI'm only just learning about sheafs so this is probably silly, but I am trying to work out why the presheaf of holomorphic functions on the complex numbers forms a sheaf. My problem is that if you consider two disjoint open disks in the complex plane, and pick a random holomorphic function on eac...

08:31
1
Q: How to fully tile an 8 by 8 square with Z-tetrominoes?

DanielIs it possible to fully tile an 8 by 8 square grid using only Z-tetrominoes? (I don't know the answer...)

2
Q: why T-alg is terminal in T-adj

famous mortimerIn the following $(\mathscr D,T, \eta,\mu)$ is a monad QUESTION: Why is K unique? Let $K’$ be another such. Since $G^T$ is faithful it suffices to prove $K=K’$ on objects. But $G^T$ isn’t injective on objects and F isn’t surjective on objects…

CS
CS
09:25
2
Q: Why does an op-amp behave differently with a diode versus resistor?

Daniel ValentineI have constructed the buffer below. In this setup the output of the op-amp is stuck at whatever the voltage supplied to its power rails is. When I replace the diode with a resistor I am able to get the input signal at the op-amp's output. Why does the diode make this a steady voltage?

5
Q: Is it true that all matrices of this type are involutory?

MaximI came across a problem that suggested the following for a $3 \times 3$ matrix. $$\text{Let } H = I - \frac{2}{3}A$$ $$\text{Then } H^2 = I$$ For $H, A \in M_{3,3}$ and $A$ being a matrix of all ones. I played around with this and found that for $H, A \in M_{n,n}$ and $A$ being a matrix of all on...

09:44
1
Q: How to perform formula operation on the equation?

csn899How to perform formula operation on the equation? 1.How to formulate a formula that contains only one parameter? 1/4 m^2 + m + 5 How to get: 1/4 (m + 2)^2 + 4 2.How to formulate a formula that contains two parameter? 59 - 4 x + x^2 + 16 y + y^2 how to get: (x - 2)^2 + (y + 8)^2 - 9

10:04
1
Q: Who are the three people in the Twilight Struggle card "Red Scare / Purge"?

AllureImage of card in question: Who are the three people in the image? The card comes with flavor text: Sparked by fears that the “enemy is among us,” the “red scare” hit its apex with Senator Joseph McCarthy, and the hearings on “Un-American activities” in the House of Representatives during the 19...

10:18
2
Q: Find the maximum value of an algebraic expression.

ryan.zcdThe question is: Determine the maximum value of $a, b, c$ from the following system of quadratic equations. $$\frac{4a^2}{1+4a^2}=b$$ $$\frac{4b^2}{1+4b^2}=c$$ $$\frac{4c^2}{1+4c^2}=a$$ I haven't an idea on how to do this, and my attempts led to a dead end. Help would be appreciated, thanks.

DIY
DIY
10:34
1
Q: New AFCI/GFCI instantly trips when installed downstream from a GFCI - no obvious reasons

HelloSeanHouse is an older home from the 1890's, the wiring has all been replaced over the years, new panels, all that, but often decades apart so there are many generations of electrical all hooked together, but no knob and tube and no 2-wire. Here's the setup: I put a GFCI in my basement where a normal ...

1
Q: Attach wheels to hollow metal table legs

Mâtt FrëëmanI want to attach some wheels to a small table. It has a metal frame. The foot of the frame is just a square metal legs of 20mmx20mm with a little plastic cap on each of the 4 legs. Taking the cap off is hollow. How would I attach something like this to each foot. My initial thought would be to cu...

3
Q: Paranormal Activity

JafeThis is part 15 of the puzzle series Around the World in Many Days. Each part is solvable on its own. Deаr Puzzling, The numbers in blue here form a Nurikabe puzzle. Shade some cells in the grid so that each unshaded area of connected cells contains exactly one number, which is equal to the siz...

11:05
2
Q: What does this diagonal line in the drums sheet music mean?

pranannaAs the title says, what does the indicated line in the figure mean in a drum sheet music?

3
Q: Looking for story about a group of Pegasi with the main character set to be killed, also with a seagull that winds up dead

SilvermidnightI read this story six to seven years ago. It's the first book in the series. The series has 3 or 4 books, I don't remember the exact number. The cover featured a midnight pegasus looking at something. What I remember: The main character is the only midnight pegasus in 100 [?] or 200 [?] years Be...

Vi
Vi
2
Q: Why [\w-] can't match \w or -?

showkey[ab] matches any of a or b ,\w matches any word character (alphabets, digits, underscore). I find that [\w-] can't match \w or - .In order to convert Sec-Control into "Sec-Control".The expression can work s/\(.\+\)/"\1"/ Why s/\([\w-]\+\)/"\1"/ convert Sec-Control into Sec"-"Control instead of "...

8
Q: Are reduced working hours in a PhD a reasonable idea?

freshGraduateI live in Germany. I've just recently finished my M. Sc. in computer science and I'm now thinking about pursuing a PhD. I've been offered a full-time position on a topic which I'm quite interested in (related to my Master thesis). The contract would be for five years and well-paid, so I wouldn't ...

11:33
1
Q: Are the articles of the website “言葉の違いが分かる読み物” written by one person or multiple people?

Micheal GignacThere is a website called “言葉の違いが分かる読み物” (English translation: “Reading Material Where You Can See The Difference Between Words”). As the website title suggests, it has articles that explain the difference between words. The articles are quite helpful. However, there is something about them that ...

11:51
2
Q: Shouldn't Infinite Past be smaller than all other dates?

user13892Max of Infinite past and a finite time gives Infinite past. Max[DateObject[{-\[Infinity],1,1},"Day"],DateObject[{2023,7,1},"Day"]] DateObject[{-[Infinity], 1, 1}, "Day"] This doesn't make sense, this is breaking my code. This has to be a bug?

12:15
1
Q: What page layout parameters imitate a line printer?

Leo B.If I want to imitate the (scaled) look, albeit not the feel, of a typical line printer printout on fan-fold paper, using Letter-, Legal- or A4-sized paper, what settings should be used to reproduce the ratio of character height to inter-line distance, character size and pitch, etc.? Perhaps, a to...

12:30
3
Q: Run command in a child process

D.J. ElkindInspired by this answer from SO, I try to find a version of fork()/exec()/wait() which: starts a child process; catches stdout, stderr and return code separately; properly handles all possible errors from system calls (e.g., out of memory, unable to open files, file not found) and makes sure no ...

12:51
2
Q: How does the Pareto distribution represent the 80-20 rule?

jskattt797According to the current Wikipedia article: The Pareto principle or "80-20 rule" stating that 80% of outcomes are due to 20% of causes was named in honour of Pareto, but the concepts are distinct, and only Pareto distributions with shape value ($\alpha$) of $\log_4(5) \approx 1.16$ precisely ref...

13:07
2
Q: Why, in the Gospel of Mark, is Jesus referred to as the son of Mary but, in the Gospel of Luke, he is referred to as the son of Joseph?

MillaWhy, in the Gospel of Mark, is Jesus referred to as the son of Mary but, in the Gospel of Luke, he is referred to as the son of Joseph? Is not this the carpenter, the son of Mary, the brother of James, and Joses, and of Juda, and Simon? and are not his sisters here with us? And they were offende...

1
Q: What's the translation of an "egg crate mattress topper" in French?

Franck DernoncourtA mattress topper is: a two- to four-inch layer of memory foam, latex, or other material added on top of your mattress. Egg crate means has the shape similar to an egg crate: Example of an egg crate mattress topper: Sometimes one just says "egg crate" to mean "egg crate mattress topper" I bel...

1
Q: How to setup HTTPS URL on local project using ngrok in Magento 2

Mohit PatelHow to setup HTTPS URL on local project using ngrok? I have one project and need to this project url with https. Anyone know let me know. THANKS.

2
Q: Trouble solving Non-Homogeneous Recurrence relations

lex320The following is the prompt I am working on: Suppose you have an investment account which grows by 10% every year, and you want to, in perpetuity, withdraw an increasing amount of money from this account, starting with 1 dollar at the end of the first year, 2 dollars at the end of the second, 3 d...

13:30
6
Q: Language Word Checker

Huỳnh Trần KhanhDevelop a program to check if a given word is part of a language defined by the following rules: The language has a set of rules. The empty string is considered a valid word in the language. Two words from the language can be concatenated to create a new word in the language. If X is a word in t...

Law
Law
13:53
3
Q: If a witness asks for their lawyer during a trial, how is it handled?

chausiesA criminal trial is going on. Andy the Attorney asks Walter the Witness some questions. After a while, Walter realizes he's been an idiot, and says he wants his Lawyer Larry. How does the court proceed? Do they set up a second trial with Walter and Larry before they can proceed with the first tri...

1
Q: To what extent is "right to privacy" related to "right to good name / reputation"?

QuantumWalnutThere is a detail in Article 12 of Universal Declaration of Human Rights that I find interesting: No one shall be subjected to arbitrary interference with his privacy, family, home or correspondence, nor to attacks upon his honour and reputation. Everyone has the right to the protection of the l...

3
Q: Why are Phillip's unmarried daughters mentioned in acts 21?

Keenan DiggsActs 21:9 He had four unmarried daughters, who prophesied. Why are there 4? And why are they unmarried? And why are they included in the Scripture? Seems like a fun family, but a bit of jarring detail when reading the passage narratively.

ELL
ELL
1
Q: How to understand the sentence?

apple appleHow to understand "We thought we could cope”, and they’ve been trying to extend what they’ve got in the cupboard, but actually we are there to help." from the Guradian? Does the "extend" mean the people give something to the foodbank or get sth from the foodbank? Is the cupboard foodbank's or th...

1
Q: What statistical test do you perform to compare sugar consumption between two groups of people?

LearnerI collected data from 10 patients regarding the amount of sugar they consume in a day and want to see whether this amount significantly differs from the average amount of sugar consumed by the general population per day. This value consumed by the general population is a single average value publ...

14:16
2
Q: Regarding SISL package of siesta

Shanmuka RaoI want to visualize MPSH orbitals using SISL package of siesta, is there any manual or guide for it. I have searched in internet but didn't get any proper information about it. Thankyou

2
Q: Recognizing performance of solo workers

Captain KenpachiOur company is big on giving praise where praise is due. How that works is you get to nominate one or more people who are always doing some amazing work, going the extra mile, etc. However, since we have a lot of people deployed in the field on solo or small team projects, the result is that the ...

14:33
2
Q: Probability of sum of random variables

xyzI am trying to compute $P(X_1=x_1,\ldots,X_n=x_n\mid X_1+\cdots+X_n=x_1+\cdots+x_n)$, where $X_i$ are independent samples from a Poisson distribution with mean $\lambda>0$ and $x_i$ are nonnegative values. $$P(X_1=x_1,\ldots,X_n=x_n\mid X_1+\cdots+X_n=x_1+....+x_n)=\frac{P(X_1=x_1,\ldots,X_n=x_n)...

6
Q: C - Casting ~0 to unsigned long

HermitI’ve seen low-level bitwise expressions that use ~0 as a way to generate a bitpattern of all 1s, which is then used as masks, etc. For example in K&R page 45: /* getbits: get n bits from position p */ unsigned getbits(unsigned x, int p, int n) { return (x >> (p+1-n)) & ~(~0 << n); } In my machin...

TeX
TeX
14:44
1
Q: Removing extra vertical space when using cases in a table environment

DamitrI have a table which has cases in one of the columns as suggested here. The issue I am facing is that the first column has some text, and using cases leaves a blank space inline with text from first column. I have tried the solution suggested here, but is does not solve the problem. Is there any ...

15:24
3
Q: Find the removed term from an arithmetic series, given the sum of the other terms

Zero We are given a sequence made up of pairs of numbers, $(1, 2), (3, 4), …,(x, x+1)$, out of which we must remove one pair. The sum of the numbers which have not been removed is 156. Calculate the sum of the removed numbers. This is what I got so far: $(1+2)+(3+4)+(5+6)+...=3+7+11+...$ forms an a...

CS
CS
15:47
1
Q: What exactly is potential energy?

NilaayConsider a ball falling from a height $h $. It gains velocity because of the work done by gravity on it. I don't quite understand the role of potential energy here . What does the potential energy exactly do in this scenario i.e. what is the role of potential energy in the falling of an object?

15:57
1
Q: Why are there black lines on my seamless texture?

smashingtuckI edited a seamless texture in affinity photo and added it to a spherical object. However, when I zoom in on the texture there are very thin black lines. I cannot see any lines on the texture image itself:

16:22
1
Q: How does "blue light" from computer monitor warp our perception of RGB color gamut when photo editing?

user610620Everyone knows the feeling when you perfect a photo edit on your computer, only to find out the colors are way off when you view the photo on a different device, or someone else's monitor or display. Most desktop and laptop screens have a very bright "blue light" mode set as default, which is now...

Law
Law
16:51
2
Q: Can two people be tried together?

chausiesBob and Carl are both accused of the same murder of Alice. Are they supposed to be tried together as one party in a single trial? be separately tried in two simultaneous trials? be tried one after another? or what? (2.) seems the most correct, as Bob and Carl are separate parties that may want ...

TeX
TeX
1
Q: Correct positioning of a node and a circuitikz component

SylvainRigalI would like to mix "conventional" tikz node and circuitikz components in the same tikzpicture but I have problem with positioning them. For example, I would like to obtain this result: But with the MWE below I obtain this result (the node is overlapping the battery component): How can I avoid ...

3
Q: How can a verifier benefit from being malicious or dishonest in a Zero Knowledge interactive proof?

user93353Several texts talk about malicious/dishonest verifiers in a zero knowledge interactive proof but none of them properly detail how a dishonest verifier can gain extra knowledge over a honest verifier using some example like Quadratic Residue Interactive proof or graph 3 colouring Interactive proof...

CS
CS
17:29
1
Q: Possible influence of Phoenician on local dialects in the British Isles during the Iron Age

rcgyI'm very interested in the possible influence of Phoenician, specifically, on local dialects in the British Isles during the Iron Age. I'm curious about any historical and linguistic evidence that may exist, such as inscriptions or loanwords, and how it may have affected the phonology and grammar...

17:43
1
Q: Charging car battery with charger without disconnecting from car

AliGot a Toyota Corolla E170 and it is only used for highway travels twice a month. Car has a tracker installed as well. I want to give the battery (lead acid 46AH) a top up using battery charger (10A) after every week so that battery remains charged since ECU and Tracker use battery to keep informa...

CS
CS
17:54
3
Q: LM317 voltage regulator varying output depending on the load

EmeraldMonkI have designed a circuit using a LM317 to provide a 13V voltage rail. The Vin is 24V. I have voltage voltage divider networks which supply different voltages to a logic comparator which is connected to the Vin. From this Voltage regulator I am simulating a hall sensor and hence have a added a po...

2
Q: AWK print lines between two patterns, only need to print last occurrence of matching lines

Amal P RameshI want to filter a log file and print some lines between two matches and print only the last occurrence. Sample file content: 2023-03-08 11:12:44,306 - Code Deploy - INFO - Received signal 2023-03-08 11:12:44,306 - Code Deploy - INFO - Received message signal 2023-03-08 11:12:44,306 - Code Deploy...

1
Q: nginx route all 404 requests to a php script

hanshenrikI want to route all 404 requests to a php script, How should I do that? My nginx config is: server { listen 81; listen [::]:81; root /srv/http/paste.lan/www; autoindex on; client_max_body_size 20M; index index.txt index.html index.htm index.php; server_name paste.lan; ...

AI
AI
18:37
2
Q: Why is bias prameter needed in neural networks?

SajanGohilI have read several resources including previously asked questions such as this. I have also read arguments related to intercepts needed to separate linearly separable data. My question is, if my neural network can perform feature transformation, what is the need of a bias term? Since the weights...

CS
CS
4
Q: Peskin & Schroeder QFT, two-loop renormalization example

DarenIn Peskin & Schroeder's QFT, section 10.5 page 338, the book gives a two-loop renormalization example (scalar $\phi^4$). Before we start the two-loops, let's us recall the renormalization condition in (10.19) For the second renormalization condition, my understanding for two-loop case is $$\text...

1
Q: On the homology of manifolds with boundary

brickSuppose that $M$ is a smooth manifold with a boundary. Let $\mathrm{int}(M):=M\setminus\partial M$ be its interior. Is there a relation between the (relative or absolute) homology of $M$ and the homologies of $\mathrm{int}(M)$ and $\partial M$? The naive guess $H_k(M) \overset{?}{\cong} H_k(\math...

19:15
1
Q: Does "Blood Meridian" accurately describe gunpowder manufacture?

releseabeIn Blood Meridian (1985), Cormac McCarthy has the gang of "Indian fighters" surrounded and out of powder, so one of them manages to make it from scratch, making charcoal from wood, saltpeter from bat guano and finding sulfur in a volcanic area, but the final step has them urinating on the mixture...

2
Q: The massive problem with regarding string manipulations as the foundation of mathematics

Ryder RudeFormalists believe that mathematics is just a game of string manipulation, not much different from other games like Ludo or chess. I think string manipulation is an extremely useful way to think about mathematics when you don't care about the foundational questions. In the discussion of foundatio...

3
Q: Using Filling went wrong

runnerf[x_] = If[x >= 0 && x <= 2, {4 - x^2, 2 x - x^2}]; p1 = Plot[f[x], {x, -3, 3}, Frame -> True, GridLines -> Automatic, PlotStyle -> Blue, ImageSize -> 550, Filling -> {1 -> {2, Orange}}, FillingStyle -> Directive[Opacity[0.1], Orange]]; p2 = Plot[{4 - x^2, 2 x - x^2}, {x, -3, 3}]; Show[{p...

DSP
DSP
19:31
2
Q: Consequences of variable sample rate in waveguide synthesis?

Reg GriffithsI'm making musical 'woodwind' type oscillators using digital delays with feedback, similar to these: A Meta-Wind-Instrument Physical Model, and a Meta-Controller for Real-Time Performance Control. I have successfully implemented my own delay/feedback loops using block diagrams programmed in C in ...

1
Q: Using Jeffreys prior for Bernoulli distribution to find the prior of a transformation on p

CORyThe question goes like this: Use Jeffreys prior for Bernoulli distribution and find the prior for $\eta$ where: $$\eta(p) = \left(\frac{p}{1-p}\right) $$ So $\eta$ here is some kind of a transformation on the Bernoulli parameter $p$, and I know that Jeffreys prior $\pi(p)$, for Bernoulli distribu...

19:49
1
Q: Get stats of number of files of unqiue file extensions including binaries from command line

anjaneshI am trying to recursively count the number of different extensions and how often each of them occurs in the files of a directory and I want to include the number of files with no extension. I am trying: find . -type f -name "*.*" | grep -o -E "\.[^\.]+$" | grep -o -E "[[:alpha:]]{2,16}" | awk...

3
Q: How can we get/calculate all the available FinancialIndicators outside TradingChart and InteractiveTradingChart?

GarouDanHow can we get/calculate all the available FinancialIndicators outside TradingChart and InteractiveTradingChart? Using InteractiveTradingChart we can retrieve and add valuable data from an asset for our study with something like: InteractiveTradingChart[{"GOOGL", {{2022, 1, 1}, {2023, 1, 1}}}] o...

TeX
TeX
20:15
3
Q: LaTeX justifies text when using itemize

GretaI would like to create a list that looks like this in LaTex: 1. Title of bullet point one description 2. Title of bullet point two description I've tried doing so using this code: \begin{itemize} \item Title of bullet point one\linebreak Text text text \item Title of bullet ...

3
Q: Does one have to pay taxes on the money given by the US government for bribes, espionage, etc?

Ken - Enough about MonicaIf the FBI pays you to be an informant, or the CIA pays you to steal secrets (and you file taxes in the US), do you get a 1099 at the end of the year? Do they take taxes off the top? Or is it somehow tax exempt?

2
Q: Infinite hotel +1 guest

IbolitCan anyone explain how is it possible to fit another guest in an infinite hotel that is already full? Here's how the explanation (supposedly) goes: A guest arrives at an infinite hotel, where every one of the infinite number of rooms is occupied by a guest. The manager tells the guest to go to th...

20:34
3
Q: On opening Excel, it keeps prompting me that a custom add-in cannot be found. How can I stop this?

TheFriendlyAskerWhenever I open Excel, it tells me that a particular custom add-in cannot be found. I no longer needed this custom add-in and have deleted it from my computer. How can I stop excel from continuously prompting me with this error? As a solution, I went: Developer > Excel Add-Ins > Clicked on the A...

20:46
1
Q: Drawing a shaded area under a probability distribution

csn899Plot[PDF[NormalDistribution[70.5, 14.31], x], {x, -8, 130}, PlotRange -> All, PlotLabel -> "Normal Distribution with mean=70.5,std.dev=14.31"] Probability[70.5 - 14.31 < x < 70.5 + 2 14.31, x \[Distributed] NormalDistribution[70.5, 14.31]] How can I make the image fill the color correspond...

21:03
2
Q: Is it ok to leave my bike on wheel-on trainer with roller pressed against the training tire?

TaipenI have a wheel-on smart trainer from Saris. Currently prior to each session I have to press its roller against the rear (training) tire by screwing in a special bolt - and then unscrew it after I'm done. In cold seasons I use the trainer on daily basis (sometimes more than once), so this process ...

21:24
3
Q: "Thl" money abbreviation

widsithDoes anybody know what this abbreviation for money represents? I think it's "800 Thl" but not sure what type of Geld that is.

DIY
DIY
21:36
2
Q: How can I repair this wire clothes drying rack?

G. B.I have a clothes drier, similar to this one, although haven't found a picture from the exact same type. Some of the wires/rods came lose: What is the easiest/cheapest way to reattach them for long-term? The material is magnetic, so it is probably some kind of steel. What I thought of: some kin...

1
Q: What's the difference between VBoxContainer and VFlowContainer?

JeroenI'm trying to build some UI for my game made in Godot 4.0. I want to make a "Toolbox" scene and need to decide what containers to use. I come from web development, where I'd use a flex column and each tool would be a single row in that column of items. In Godot 4 I have many options, the two rele...

1
Q: Can I use the Peltier effect to cool down an underground city on Venus

EversonThomasIn my fiction I have a city deep underground on the planet of Venus. I know this is deeply impractical, and there are far easier places to build an underground city, but that is not what I have done. The question is this, could I protect the city inside a shell of suitable material that uses the ...

GIS
GIS
1
Q: GDAL NoDataFill returns as int and won't write to copied raster

Konan PruiksmaI'm struggling to understand what's going wrong here. I'm just really simply trying to use gdal's nofilldata method to fill the gaps in a raster file. Here's the code: from osgeo import gdal from osgeo.gdalconst import * import matplotlib.pyplot as plt import numpy as np filename = "in_raster.TIF"...

3
Q: Is there a technical reason to require relation symbols to have positive arity?

Alvaro P.I've noticed that many logic textbooks (oriented towards model theory) will require relation symbols to have positive arity. I cannot immediately think of a technical reason why one would require this condition. What are the reasons for doing so? Historical?

2
Q: Reference about equivalent form of the Riemann hypothesis

Ken.WongI saw a statement about the Riemann hypothesis in Wikipedia, stating the following: $\sum_{n=1}^{\infty}\frac{\mu(n)}{n^{s}}=\frac{1}{\zeta(s)}$ holds for $Re(s)>\frac{1}{2}$ is equivalent to the Riemann hypothesis. I tried to find a reference about it but I can't find it. May anyone provide a re...

22:03
2
Q: Was I.R Baboon a Girl? (I Am Weasel)

DaronI.R Baboon got no pants. I.R Baboon got nothing to hide. It has been decades since I watched the cartoon in earnest. I have forgotten most of the lore. One thing I do remember is thinking the baboon is a girl and the weasel is a boy. So I am surprised to read the Wikipedia page that says I.R is ...

RPG
RPG
22:14
9
Q: How do I convince my players the fight wasn't rigged?

NielIGuessI am a DM in a homebrew setting (and system) that I made. We recently started the first big quest and it kicked off with them fighting two enemies. In the fight, they were going to lose, but through the use of clever strategy managed to cause the enemies to use up most of their resources too. The...

23:02
2
Q: Why is Parametric/Vector arc length the integral of speed?

JackOfAll$$\mathrm{Speed}=\lvert\mathrm{velocity}\rvert$$ $$\mathrm{speed}=\sqrt{\left(\frac{\mathrm dx}{\mathrm dt}\right)^{\!2}+\left(\frac{\mathrm dy}{\mathrm dt}\right)^{\!2}}$$ The parametric speed formula is based on the Pythagoras' theorem using a triangle formed by $\mathrm dy$ and $\mathrm dx$, w...

23:33
1
Q: Google Calendar displaying the same events for different users. Why?

Joselin JocklingsonI am trying to use Google Calendar. I have different accounts registered in the Google Calendar Android app. Each of these corresponds to a different phone user in my household or to one of my virtual accounts. What I can't understand, is, why are my calendar events staying the same when I switch...

23:47
1
Q: Drag and drop differences between Godot 3 and 4?

JeroenI'd been following Godot tutorials to add Drag & Drop functionality to Control nodes. They've presumably been created for Godot 3.x, but my project is 4.0. And I can't seem to get it to work, thinking something has changed. To make sure it's due to the difference in Godot versions, I did the exac...

1
Q: There exists a 10×10 real symmetric matrix A , all of whose entries are nonnegative and all of whose diagonal entries are positive

S JosephMCQ: There exists a $10 \times 10$ real symmetric matrix $A$, all of whose entries are nonnegative and all of whose diagonal entries are positive, such that $A^{10}$ has a. exactly $68$ positive entries. b. exactly $67$ positive entries. c. exactly $69$ positive entries. d. exactly $70$ positive ...

RPG
RPG
6
Q: How to deal with a min/maxxing overpowered player

mintmochamathI've recently started a new D&D5e campaign, that is mainly roleplaying focused. One of my players is playing a barbarian gnome, and rolled all of their stats.. and got a 25 for strength (and 18's and 19's for all other stats.) The party is level one. When I asked if they could reroll/balance thei...


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