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TeX
TeX
00:08
2
Q: CircuiTikZ - change position of voltage label along open draw

DraUXIs there a way to adjust the appearance of an voltage label between two points? For default the label $U_1$ will be placed midway of the voltage arrow, but I want it to appear at a point realtive to the length of the voltage arrow, for example at quarter way or at 70% way. \usepackage[americanind...

RPG
RPG
10
Q: How big is a 5000 gp diamond?

Admiral-NelsonI play a teleportation and extra dimensional sorcerer in my group and I'm getting close to obtaining the spell Gate which requires "a diamond worth at least 5,000 gp". How big would a diamond worth 5000 gp be?

00:51
3
Q: How do you pronounce a ッ followed by a ー?

lukiniI thought I fully understood katakana, but an old meme confuses me. Here is a nicovideo dictionary entry on it: フタエノキワミ、アッー! If you listen to a video of the English voice actor saying it, it just sounds like a normal "aaaaaa" which I would expect to be アー. I know アッ is already "ah", but elongati...

6
Q: As faculty, can I bring about changes in our outsourced campus bookstore?

academicI am tenured faculty at a state university in the US. Our campus bookstore is not run by the university; instead, it is owned and operated by a large, well-known corporation, and has a contractual agreement with the university to "be the official bookstore" and to operate in the center of campus....

TeX
TeX
2
Q: Iterating through a list and modifying elements one at a time to construct new list

HarryLong time reader, first time poster. I have a question about creating a macro that iterates through a list. I've read through some questions posted by other users, but all of those have something to do with using LaTeX in a complicated way. My question's about using plain TeX to iterate through a...

CS
CS
01:49
5
Q: Is there an economic interpretation of the envelope theorem?

WilliamTI wonder if envelope theorem has also some hidden economic interpretation. For example, Lagrangian multiplier in economics can have interpretation of 'shadow price' which is useful economic concept. The envelope theorem seems like something that should have some deeper economic interpretation as ...

02:03
1
Q: How to add X amount of year to YYYYMMDDHHMMSS format in bash?

DaeYoungBear with me I am not strong with bash. I have a date/time as in YYYYMMDDHHMMSS format such as 20031005000000in string. I like to add one year to it. I've read man date but it was a bit hard to interpret what it says although I think I do have basic understanding of -d and -s option looking at ma...

02:15
2
Q: Find minimum peak elements in an array

Divya MurugananthamQuestion: Given an array numbers $$a := [2, 7, 8, 5, 1, 6, 3, 9, 4]$$ Check the below conditions, both the conditions should be satisfied. \begin{gather} \text{If }a[i] > a[i-1]\text{ or if first element }a[i] > a[i+1] \end{gather} \begin{gather} \text{If }a[i] > a[i+1]\text{ or if last element }...

02:27
4
Q: Combine two plots with reversed y-axis

RodrigoI need to display two y-values for a list of points. I tried doing this: data=Import["https://pastebin.com/raw/cJtpDmcm","Table"]; p1=ListPlot[data[[All,1;;2]],PlotRange->{{6,10},{3,7}},ImageSize->500,PlotTheme->"Monochrome",BaseStyle->Directive["TR",FontSize->16,Black],Frame->{{True,False},{True...

3
Q: How do I bet that a stock price will not move?

user102086If a stock will go up, I buy the stock. If a stock will go down, I short the stock. If a stock will not go up or down, I ... ??? ... How do I bet that a stock will not move? I think I might be able to profit by selling a naked put and a naked call option with a strike price equal to the current s...

2
Q: How to translate "unscratchable itch" to Russian?

MentiflectaxAn unscratchable itch is an issue that is very important to a person, but which they cannot do anything about. What would a more or less close Russian equivalent (apart from журавль в небе)? Update 1: Example of usage in a sentence: After miss X dumped him and married another guy, she became Y's ...

02:52
2
Q: Is there a generic VBE driver available for Windows 3.x?

user3840170I’d like to run Windows 3.11 on a relatively modern laptop. One problem I have is that the only display driver that works with my hardware is the basic VGA driver, which only supports the rather unimpressive resolution of 640×480×4bpp, whereas my screen is able handle 32-bpp graphics nearly five ...

03:28
2
Q: What is the fastest way of calculating whether vectors are linearly independent?

Logik Is the following family $(u_1, u_2, u_3)$ linearly independent? $$ u_1 := \begin{pmatrix} 1 \\ 3 \\ 5 \\ -1 \end{pmatrix} , u_2 := \begin{pmatrix} 1 \\ -1 \\ -3 \\ 3 \end{pmatrix}, u_3 := \begin{pmatrix} 3 \\ 2 \\ 1 \\ 4 \end{pmatrix}$$ So, do I have to form a matrix $U$ with columns $u_1$, $...

2
Q: Do native web applications utilize the world wide web or only the internet?

GeorgeWhile it is clear to me that "websites" utilize the particular web named "World Wide Web" which by itself based upon the particular Wide Area Network named "Internet", it is unclear to me if native web applications such as generally any smartphone application I have on my smartphone also utilizes...

03:55
3
Q: Check battery health on iPad like in iPhone

SwissCodeMenHow can I check the battery healthy of my iPad? It's not the same as with my iPhone: Settings → Battery → Battery Health. I haven't the Battery Health-Button in Settings → Battery on my iPad as I have it on my iPhone. How can I check this on my iPad Pro? (Version 13.6)

RPG
RPG
6
Q: How to open a door with AC 15, 18 hit points?

Marco Aurélio Alves PutonI'm learning to play D&D and I'm following the Frozen Sick adventure from D&D Beyond. At some point, the players need to open a door with "AC 15, 18 hit points". I think AC means Armor Class, so I need to roll a D20 and get at least 15 to hit the door. But what does the "18 hit" mean?

04:43
2
Q: Is my Integral proof correct?

CSS JowooCompute $\int \tan^{-1}x \,dx$. First, set $u = \arctan(x)$ and $dv = dx.$ We want to find $du$ and we already have $v = x.$ We start by taking the tangent of both sides, leaving us with $\tan(u) = x.$ Next, using implicit differentiation, we get $\frac{du}{dx}\sec^2(u) = 1,$ or $\frac{du}{dx} = ...

CS
CS
2
Q: Why is it unconstitutional for a public US official to block someone for disagreement?

Michael MormonI read that public officials blocking people on Twitter goes against the 1st amendment. So, what is the difference? President Trump blocked someone on Twitter. A court got involved and said that this violates the First Amendment. This has been upheld by other courts who say that this stands, even...

1
Q: Current controlled bridge amplifier

Voltage SpikeThis circuit essentially takes a control input and then doubles it when presenting it to the load. I would like a circuit that controls the current to the load. How would I modify the circuit to do current control with a sense resistor in series with the load? So the transfer function would look ...

2
Q: Esus4 in the key of C. How can I use it?

ambitious_ph1lologistRecently I've discovered that Esus4 chord can be built by using notes from C major scale (Esus4 notes: E-A-B - no 'sharps' or 'flats'). But I don't know how can I use the chord in the keys of C or Am I tried to find some ways to use the Esus4. For example, if I play the four chords (I, IV, V, vi)...

4
Q: Why we don't build generic space probes?

Robert GawronWhy each space probe is so different? This increase cost. Wouldn't it be beneficial to design one probe that can be send in many different directions? Or maybe a set of probes, or maybe design a framework what a probe is, like a PC computer (that has many different parts, but all of them has comm...

05:22
5
Q: One truthteller/liar and one random person

Hemant AgarwalYou come across two peculiar aliens: Alice and Bob. You know the following about them: Alice is either a "truthteller" (she always tells the truth) or a "liar" (she always lies). Bob is a "random" (he randomly tells the truth or lies) For whatever reason, you must figure out who is who by indiv...

05:33
2
Q: Why does the equation of a tangent to a curve work?

KrishnarajGiven the point of tangency $(a, f(a))$, why does using the equation $y = f'(a)(x-a) + f(a)$ give the equation of the tangent? I understand that $f'(a)$ is the gradient, but I'm not sure why multiplying it with $(x -a)$ and adding $f(a)$ gives the $y-$intercept of the line.

06:12
4
Q: What did the DoD think Fortran lacked?

rwallaceAccording to https://en.wikipedia.org/wiki/COBOL the project to design COBOL began when On 28 and 29 May 1959 (exactly one year after the Zürich ALGOL 58 meeting), a meeting was held at the Pentagon to discuss the creation of a common programming language for business. It was attended by 41 peop...

06:39
6
Q: Theory of weak enrichment in higher categories

shibaiHas there been work towards a general theory of weak enrichment in higher categories? To be more pointed, has there been any work towards trying to make sense of statements such as There is a (weak) $(n+1,r+1)$-category $\mathcal V\mathbf{Cat}$ of categories enriched in a monoidal $(n,r)$-catego...

2
Q: Terminology: Upper limit and lower limit.

Javier MariñoLet $(x_n)$ be a sequence of real numbers. It defines: $\limsup\limits_{n \rightarrow \infty} x_n=\lim\limits_{n \rightarrow \infty} (\sup_{m≥n} x_m)=\inf_{n≥1}(\sup_{m≥n}x_m)$ How should I understand the notation of the definition? Specifically the $m≥n$ and $n≥1$ terms.

1
Q: Is "workaholic" culture a requirement, or optional?

c36I've received a job offer from an extremely large company with a reputation of having a "workaholic" culture. I asked some of the interviewers about it in loose terms (ie. what does a work week look like; what's the work culture like; etc) and the responses sounded pretty normal to me. Since it's...

07:08
1
Q: Meaning of 「同性から見たって良い女だろ?」

NoguiI tried to understand and translate, I can think of: "She's a nice woman from the same sex, right?" "Seeing from the same sex, she's a nice woman, right?" "She's a nice woman to see from the same sex, right?" But I'm not sure what is the correct meaning of the sentence.

07:19
2
Q: Dad accidentally sat on my cat

ReemMy dad accidentally sat on my 2.5 kg, 2 year old Persian cat. He didn’t see or hear her because he was on the phone, and she was sleeping on an office chair. Once he sat on her, he realized that something was under him. He stood up, and she ran away. He didn’t hear her scream, so we don’t know if...

3
Q: How would I make these object legs?

baconI'm having the hardest time figuring out how to create the legs of this bowl. I tried to create the legs from cylinders and attach them but it doesn't look good at all that way. I've tried making handles for cups etc and I've had no issue but I'm kind of stumped on doing legs this way. Any help i...

08:06
5
Q: Is it unprofessional to accuse someone of being "snarky" in a work chat?

mjjfAn external colleague asked me if I was "being snarky?" when I told one of his report I had already sent them something they asked for. Am I right to find this unprofessional? For context I am a development tech lead with a small group of developers reporting directly to me. I've been working wit...

08:42
1
Q: How can I change the transform by minimal code?

Seyed Morteza KamaliI'm a beginner and I just want to set the location, rotation, and scale of the object. I tried to get code by reverse engineering but when I moved, rotated, and scaled my object I saw complicated code.

CS
CS
09:20
3
Q: efficient algorithm for min cut with specified number of vertices

StephenJConsider a graph with vertices $V$ and edges $E$. The standard version of the min cut problem is to find the partition of $V$ into a (non-empty) subset $C$ and its complement $\bar{C}$ so as to minimize the number of edges going between $C$ and $\bar{C}$. Algorithms are known for this problem whi...

09:58
2
Q: Different numbers in all cells of a 3x3 board

Dmitry KamenetskyThis puzzle is inspired by this one: Board with all 2020s Zeroes are written in all cells of a 3×3 board. Pressing a cell increases by 1 the number in this cell and all cells having a common side with it. Is it possible to obtain different numbers in each cell? Bonus question: what is the least n...

5
Q: How can a primate-like shoulder structure enable proficiency in BOTH climbing and throwing?

Foosic17In the project I am working on, the main race in my setting has the body plan similar to a primate, and has somewhere between a moderate, or highly arboreal lifestyle. (Haven't quite settled on this yet) Recently, I stumbled upon the topic of human throwing, and how large of a role it played in h...

DIY
DIY
10:23
1
Q: How do I cut an arc in a pine board?

MarinaioHow can I cut the arc as shown in the hyperlink? I have a circular saw. I have a jig saw. I thought I might calculate the center of the arcs circle and (using a line tied to my circular saw) cut the curve on a clamped down 1 x 4. I don't have a very steady hand when it comes to using my jigsaw s...

10:34
1
Q: How to word this exercise about converting "English" into interval notation?

Nicholas RobertsI am writing an exercise for a precalculus homework assignment that deals with the topic of interval notation. The point of the exercise is to convert open, closed, and half open intervals described in English into interval notation. Here is a snippet of the exercise: Write the following sets of...

5
Q: Is ARM64 the next big thing in matter modeling?

Cody AldazConsidering how GPUs in matter modeling was first recognized in gaming devices like PlayStation, it is also interesting to consider whether ARM64 chips, which are the type of chips in modern smart phones, will play a similarly revolutionary role in matter modeling. Now it is no secret that ARM6 i...

10:50
1
Q: Can I raise the listed rent on a rental property due to high demand?

Runeaway3I a US citizen living in the US looking to rent my Philadelphia condo unit. I put the listing on Zillow and had undercut neighboring rental listing to ensure I got tenant applicants, as I was nervous (as a first time landlord) that I would not be able to find any. To my pleasant surprise, I have ...

11:23
1
Q: How does the runner placed at second base in extra innings affect Earned Run Average?

GreenMattNormally the pitcher who allows a runner to reach base is charged with the run if the runner eventually reaches home, even if the pitcher is replaced before the runner scores. If the run is an earned run, that pitcher's ERA is affected. For this abbreviated season, MLB is placing a runner on seco...

11:52
3
Q: Minesweeper for Java, BombCounts Method

Program beginnerI have a method which checks all of its surrounding squares and returns the number of bomb around it but it's really long code and ugly ,so is it can shorten ? for (int x = 0; x < counts.length; x++) { for (int y = 0; y < counts[0].length; y++) { if (counts[x][y] != MINE) { int Minese...

12:04
2
Q: SFMC JB Custom Activity | POST values from DE to endpoint that requires specific data set

Dr. TenmaI have an endpoint that is expecting data that is close to the below format (recipient object is required). I want to send this data after execution in my journey. The data is coming from my entry source (data extension). Here is documentation to the API I am wanting to send my POST to: API DOC { "...

1
Q: Is the set of all ICC amenable groups countable?

ChilpericIf "yes", then in general, the classes of all countable ICC groups that give rise to the same von Neumann algebra (factor) -- are these classes always countable, do we know? Is it useful to consider this as an equivalence relation? How about the same question with the crossed product construction...

12:40
4
Q: Is an invitation to 'chat' about a potential PhD position actually an interview? What am I to expect?

SPTI've been invited for a chat for a potential PhD position by a professor I'm interested in working with. He also wants me to give a short presentation on some experiments I've done in the past that I'm proud of. What am I supposed to expect from this? Is it going to be a real interview? My master...

12:54
5
Q: Can non-deuterated solvents be used for 13C-NMR (and in fact other nuclei)?

123456789Basically, my question is can you used a non-deuterated solvent for 13C NMR? I'm thinking that there might be some problems with locking?

13:43
1
Q: Make the original mirrored object invisible

Larry Zeman The top object is the original object, and the bottom is that which is mirrored. Is there a way to make the top object invisible while keeping the mirrored object there?

2
Q: How to create this nice colorful glass material? (Opaque glass)

Joejoe my glass object is so dark.i try to used light path to limit the shadow and reflection make it brighter,but it doesn't has a good real shadow.i don't know why .my english is poor ,hope you understand.thank you

1
Q: Different numbers in all cells of a 4x4 board

Dmitry KamenetskyThis is a harder version of this puzzle: Different numbers in all cells of a 3x3 board Zeroes are written in all cells of a 4×4 board. Pressing a cell increases by 1 the number in this cell and all cells having a common side with it. Is it possible to obtain different numbers in each cell? Bonus ...

ELL
ELL
2
Q: the phrase "from before"

UserabcIn the sentence "I know him from before", what part of speech is "before"? Is such a sentence acceptable in the first place? More generally, is the phrase " from before" meaningful? My doubts arise from the fact that no dictionary lists "before" as a noun; but from the sentence it appears that "b...

1
Q: How does Wizard's Lightning stop Archfiend's Vessel?

RobertSo, I'm watching this youtuber play Magic: the Gathering Arena, and he was able to stop an Archfiend's Vessel from triggering when it is pulled from the graveyard by casting a Wizard's Lightning, targeting it. You can see the interaction starting around the 13:50 mark here: Wizard's Lightning s...

TeX
TeX
1
Q: Get a list of different values of another list (remove dupes)

cisI have a list \def\zList{0,0,1,1,1,2,2,10}. How can I get a (comma separated) list 0,1,2,10 that gives my all values which are different one time. Is there perhaps a way with pgfmath? (I also need the whole thing in more complex contexts [pgfplots/-table], so pgfmath wouldn't be so bad ...) \do...

GIS
GIS
14:26
1
Q: Cumulative values column

JohnFI've been through some of the examples and solutions posted here for calculating chainage of a line or cumulative values. However, I am still unable to achieve the desired outcome. What I am trying to do is to add the 'Length' values by 'row number'. So Chainage/Cumulative value of line section 1...

2
Q: Can a watermelon be left outside overnight?

SpatricoIf i were to leave a watermelon in my backyard for say, 9 hours overnight in western Canada during autumn, would it attract rats or lead to other negative effects? I'm just thinking because it has the rind I don't know that wildlife would be able to smell it. If it would lead to a negative experi...

1
Q: Finding a special plane graph with some requirements on the faces

Xin ZhangIs there a plane graph such that (1) the outer face has degree 3, i.e, is a triangle, (2) every inner face has degree 5, and (3) any two degree 5 faces share at most one commong edge.

14:57
2
Q: Will Fernet’s key function at any timeframe?

Eduardo UedaI’m very new to cryptography and I need to use a symmetric cryptography approach. My simple question is, will the key always at any time be able to decrypt the encrypted text? The encrypted text may be years old, and key will be saved years before as well. Is there any time factor applied that ma...

DIY
DIY
1
Q: How can I be sure if my toilet flapper is broken

redflatironMy bathroom has been acting funny for some time. Water would not stop running from the fill valve initially. I noticed the old fill valve had a bended holder arm, so the float couldn't stay flat. I thought it was a fill valve problem, so I replaced the fill valve. After the replacement, water sti...

6
Q: Is there any Star Trek episode that features only regular/recurring cast and no guest cast?

dennis_vokIn a typical Star Trek episode you have the regular cast (i.e. the ones listed in the intro), possibly some recurring characters (e.g. Garak or Lwaxana Troi) and usually also at least 1 main guest actor/actress who has a significant role in the plot. There's typically also non-speaking background...

4
Q: What is it called when every compact sets of a topology are contained in an open set which is contained in a compact set?

mathewLet $X$ be a topological space such that for any compact subset $A$ of $X$, there exists open set $B$ and compact set $C$ such that $A\subseteq B\subseteq C$. Does this property have a name? If so, what is it? Does this property hold for all topologies? If so I would like a proof and if not a cou...

RPG
RPG
15:13
4
Q: How to defeat Golems?

enumagIn Pathfinder 1e golems have a Magic Immunity which apparently makes them immune to all spells that allow Spell Resistance. So how to defeat those? An obvious answer would be a buffed up fighter or something to destroy it. The catch is that we're playing as a group of only spellcasters (Witch, Wi...

15:24
6
Q: Gladys's Gridless Cryptic

jafeThis is part 3 of the puzzle series. Part 1 is here. Dear Puzzling, Today I'm visiting a place that has been completely abandoned for centuries. That may sound dreary and depressing, but this place is actually full of fascinating sites if you are even remotely interested in history. This time, ...

DBA
DBA
15:56
2
Q: How RDBMS solve C10K problems, it's also load balance?

kdm.JI know AP server meet C10K problem can use Load Balance to be solved. But RDBMS server in my experience is very difficult to make load balance, especially for writing db, it should meet the client 10000 problem Therefore there's a question 'How do RDBMS solve C10K problems?" It's also load balance?

3
Q: Can my employer access my iCloud data if I sync it on my managed Mac

TheLearnerI have an iCloud Drive with all my files on it and also all my Safari bookmarks are synced to iCloud. Also most importantly my 1Password data is in iCloud. My new employer is forcing me to use a company MacBook which is a 'managed Mac' meaning everything is controlled by the employer. What should...

16:17
4
Q: What is the motivation of all individuals to stay alive?

0x30I have never read much philosophical stuff and come rather from physics/IT, but the subject interests me. What keeps an individual alive? If we make the following assumptions: There is nothing after death, only black. No heaven, no hell, no rebirth. So we don't take anything with us after death ...

3
Q: A sensible universe for a fictional story

Hari MohanI wouldn't call this scientifically accurate, but would like some opinion on sensibility of the idea. As part of a story about two time travelling engineers, they discover that their own universe actually updates itself whenever a frontier in technology is crossed. So basically, the invention of ...

4
Q: How can I use Scavenging Ooze's abilities to save it from a Lightning Bolt?

PadjinskiI cast Scavenging Ooze with 3 open G mana and there are three creatures in the graveyard, my opponent has open R mana and I suspect they have a Lightning Bolt in hand. If I use the Scavenging Ooze's ability to exile a creature three times gaining 3 life and putting 3 +1/+1 counters on it, what ha...

3
Q: A problem on Rolle's theorem

ImarriedphysicsSo there's this question that asks us to prove that, between any two roots of $\tan x=1$ there exists at least one root of $\tan x =-1$. Suppose we assume that $a,b$ are two roots of $\tan x-1=0$, then $f(a)=f(b)=0$, where $f(x)= \tan x-1$. According to the theorem, $f'(c)=0$ where $c \in (a,b)$,...

CS
CS
1
Q: Deliver a 40kHz & >40V cosine wave to a transducer for communication

le_lemonI'm trying to do on/off keying (OOK) to transmit messages with ultrasound. This is the transducer. This is the schematic of the signal generator and amplifier: It seems that the class A amplifier doesn't work. Have I made an error with the operating point? Should I instead use opamps? If you k...

16:49
3
Q: What is a random variable and what isn't in regression models

KoyI've already seen this question but it didn't help . So I'm going over regression models (simple linear regression mainly) in my statistics text book and there's a lot of confusion here about what actually is a random variable and what isn't. Namely, at one point they treat some term as a random ...

12
Q: Professor uses academic employees to write proposals

AlphaI am working at a German university after I obtained my PhD. My professor asked me to write project proposals to get funding. One and a half years ago, I spent all my time during 6~8 months writing a DFG proposal that is supposed to be a joint effort between our university and another institution...

5
Q: Gödel: If a statement of existence is neither provable nor refutable, doesn‘t that imply that the statement is false?

ATWI‘m not very versed in Gödel‘s incompleteness theorem but in a naive way: If a statement of existence is not provable, there you cannot find an example which fulfills the statement (otherwise the statement would be provable with this example). But when there is no element which fulfills the state...

2
Q: How to identify all sharp notes in sheet

bornanderI am trying to learn the piano and I am a bit confused when it comes how sharp notes are represented in the sheet. I am working my way through Prelude I in C Major (BWV 846), and in the sixth bar/measure my sheet looks like this (Sheet from musescore.com) To me, that looks like I am supposed to ...

17:11
2
Q: Different rules/procedure for new EU citizens (for less than 5 years)

Yashveer SinghCan anyone please explain what this document's page 5 second paragraph means: "If you are an EU citizen for less than five years please submit copy of your passport showing permission to remain stamps from date of arrival in the State to date of becoming an EU citizen and proof of residence in th...

17:41
2
Q: Is the definition of "limit of function" incomplete?

HiterDeanOn Wikipedia the definition of limit of a function $f$ such that it assigns an output $f(x)$ to every input $x$ is given as follows: We say that the function has a limit $L$ at an input $p$, if $f(x)$ gets closer and closer to $L$ as $x$ moves closer and closer to $p$. But I have a problem wit...

2
Q: Average amount of dice rolls before having 3 of kind

classicalMpkSuppose you have 3 dice, and you want to have 3 of a kind. Initially, you roll them all, then you can re-roll some of them until you get 3 of a kind. Rolling multiple dice at once counts as 1 roll. Example: 2, 4, 5 -> re-roll all dice 3, 3, 1 -> re-roll the 1 3, 3, 5 -> re-roll the 5 3, 3, 3 -> 3...

RPG
RPG
4
Q: Does an artificer require two hands to cast spells with a costly material component?

kentAn artificer must use an appropriate spellcasting focus when casting artificer spells. And they must use costly material components when applicable. Neither can replace the other. But can they handle their focus and costly material components with the same hand? I know of spells that contain more...

1
Q: Looking for a Detailed Milky Way Map?

kiemorarI am a UI Designer working on a Sci-Fi Strategy video game. I was wondering wether anybody here might be able to help? I am looking for a top down projection of the Milky Way that labels regions of space. This is in order to start building a server map of linked 'matches'. The Space combat Sim El...

17:56
1
Q: Magento 2.3 aroundCreate() of \Magento\Catalog\Block\Product\ImageBuilder not called

Ronak ChauhanI have create a plugin to change image object and call image url directly from AWS S3 instead of magento. Function should be call on any page where product image will be loaded. di.xml <type name="Magento\Catalog\Block\Product\ImageBuilder"> <plugin name="add_product_object_to_image_data_ar...

3
Q: Is it possible to check if a connection is local or via ssh *after* elevating to the root account with `sudo`?

emk2203I want to see if I'm connected via ssh or running a local terminal. If I just ssh into a server without changing to root via sudo, it's easy. Any of the variables $SSH_CLIENT, $SSH_CONNECTION or $SSH_TTY can be used to check if one is connected via SSH or local. Problem: When I elevate to the roo...

5
Q: How to perform virtual crystal approximation calculations in VASP?

AlisufyanCan someone share appropriate tags and methods to perform virtual crystal approximation calculations in VASP?

TeX
TeX
1
Q: Mixed decimal input with siunitx

hobbiconDoes siunitx take mixed decimal inputs like 0,004319689898685966 and 0.004319689898685966? It looks like it, but is it intended to work like this? I am using Python for my calculations with a "." decimal symbol and manually type with a "," decimal symbol. Image: MWE: \documentclass{article} \use...

18:28
3
Q: My front brakes contact the rim at different times instead of simultaneously. Is that normal or are they misaligned?

tanishq sagarhere's the video for reference When I lightly apply the brakes only one part makes contact with the wheel which makes a squeaking noise. How can I change this? I'm afraid one part of the brakes will wear much quicker than the other, also I don't know if it is due ...

2
Q: Changing crank set

Daniel HopkinsonI’ve managed to totally knacker the thread on my crank due to a poorly fitted pedal and it’s looking like a new crankset is required. Will I also have to change the cassette and chain?

GIS
GIS
2
Q: When using case when in QGIS 3, even without else, all other previously filled cells are replaced by NULL

Philippe MorganI would like to update a column with different strings based on other strings in another column. For instance : if A, B, C in column 1, write Cat1 in column 2. So I use "case when". But even without writing 'else' when it always replace all other values by NULL. Which means that if I then want to...

18:44
1
Q: setting an objects origin to match its face normals

mac17[objects local pivot point has been reset to global, how can i change it back to local normals i.e coresponding with the objects faces?

DBA
DBA
1
Q: Why does Type Resolution fail when using SELECT DISTINCT instead of SELECT on PostgreSQL?

socHere is a minimal reproduction: SELECT 1 UNION ALL SELECT DISTINCT NULL Fails with: UNION types numeric and text cannot be matched According to the PostgreSQL documentation on Type Resolution for UNION, CASE, and Related Constructs and the following chapter on SELECT Output Columns, the type of...

6
Q: Semicircle Question

mkuI need help with the question in the image. I just need someone to help by pointing me in the right direction. I don't want a full solution. I want to try to work out this question myself but I just need someone to direct me. I was thinking if the question had something to do with joining the th...

TeX
TeX
6
Q: High entropy alloy in TikZ

CasimirI'm trying to reproduce this illustration of a high entropy alloy (HEA) in TikZ: What I have so far looks quite bland because I can't find a way to randomly assign one out of a list of colors. \documentclass[tikz]{standalone} \def\colors{{red,green,blue,yellow}} \begin{document} \begin{tikzpi...

19:05
1
Q: How do incrementers work in CMD For Loops?

deanffI am trying to create a for loop that cycles through the PNGs in a directory and uses ImageMagick to combine them into pairs. This is what I have, but ++A is not accepted by Windows CMD: for /f "delims=" %A in ('dir /b /od *.png') do magick "%A" "%(++A)" +append output-"%A".png Basically, what...

2
Q: How to access the Context Menu Info?

Seyed Morteza KamaliI want to access these commands through code and add them in the array it helps me to make a tool like photoshop actions bpy.ops.mesh.primitive_cube_add(enter_editmode=False, align='WORLD', location=(0, 0, 0)) bpy.context.space_data.context = 'OBJECT' bpy.context.object.location[0] = 5 bpy.conte...

1
Q: Sometimes I lose blood vials and sometimes I don't

Enrique Moreno TentI have been fighting with the same boss for about 3 hours, and something weird happens. Sometimes, when I respawn after dying, I have all my blood vials with me, even though I used them during the fight, but other times, they are gone. For instance, I entered the boss fight with 20 vials, and the...

19:20
2
Q: Seeking a specific book on Buddhism

Paul CezanneBack in the late 1980s I was in San Francisco on business. My hotel room had, of course, a Gideon Bible but surprisingly to me, it also had a book on Buddhism, I think it was called "The Way of the Buddha" but I'm not sure. It was put out, I believe, by an organization called something like The B...

11
Q: (Why) are std::chrono literals lvalues?

DanRechtsafBasically the example says it all: assigning to a std::chrono literal - does not give an error message. I tried on gcc, clang and vc, (c++17) all these compilers accept it. Is this intended behaviour? #include <chrono> using namespace std::chrono_literals; int main() { 10ms += 1ms; //...

2
Q: GPL code behind a registration form

AndreyMy employer wants to publish a paper about software and make it open-source under GPL, but they want to know who is interested and downloads it? Is this legal to ask people to fill in a regular registration form in order to download the code? Asking because open-source GPL code should be accesi...

8
Q: Is this grid fin piece a standard lego brick

Dan Is Fiddling By FirelightI'm trying to identify the circled part from this MoC, but haven't been successful in doing so. On the one hand, the creator of this has called out two other parts in it (not shown here) as being modifications of existing bricks; but didn't say anything about the one I'm asking about, and the spa...

19:36
6
Q: What limited the performance of the SuperFX chip?

userThe SuperFX chip was an additional RISC processor includes in some Super Famicom cartridges to generate 3D graphics, the most famous example being the game Starfox. However it's performance wasn't particularly impressive, with games on other 16 bit machines such as the Amiga demonstrating higher ...

2
Q: Is the human mind capable of distinguishing between time running forward and time runing backward?

overkillThe title really says it all. Would we be able to feel anything if time started running backward?

1
Q: Replacing HP ML30 G10 Processor

AboodnetDears, I currently have the HPE ML30 G10 with Intel® Xeon® E-2124 processor installed in it. I wonder if it is possible to replace the processor with Intel® Xeon® E-2288G or Intel® Xeon® E-2236 without changing/replacing any other components inside the server ? Thanks,

20:01
7
Q: My smartphone's phonebook

mindoverflowIntroduction Recently I was trying out one of the more obscure use-cases of a modern smartphone: Calling someone by number. While typing it in, I noticed that some of my phonebook entries were displayed, even though the number I was trying to call was different! After some experiments, I figured...

posted on August 28, 2020

From Yanick Salzmann and tagged as print-material,stability

2
Q: Meaning of degeneracy in Quantum Mechanics

user266148Let $\hat{A}$ be a Hermitian operator that represents the observable $A$. Its eigenstate-equation would be: $$\hat{A}\psi_n=a_n\psi_n \tag{1}$$ After solving it, we would get a set of the eigenfunctions $\{\psi_n\}$ and eigenvalues $\{a_n\}$ of $\hat{A}$, with $a_i$ the eigenvalue corresponding t...

6
Q: Template-defined number of template parameters (very meta)

Amrastemplate<int Degree> using curve = // some definition template<int MaxDegree> using curve_variant = std::variant<curve<1>, curve<2>, .. curve<MaxDegree>>; In the above example, the number of parameters passed to std::variant's template would change depending on curve_variant's parameters: For ex...

20:36
3
Q: Is a Critique Group More Often Helpful or Not When Writing a First Draft?

Perry_MI am currently writing my first draft, and also happen to be in a critique group. It's my understanding a first draft is going to have lots of issues. This is where I am confused. While a critique group can offer some useful advice, can it also be a hindrance to just progressing with the story?

21:07
2
Q: Inhaling or ingesting cat's hairs

virolinoI discussed with somebody about the fact that I would like to buy a cat. The answer was that it can be dangerous, but in a different way than I expected. Their argument was that inhaling or ingesting the cat's hairs can cause the (human) body to react, causing local bleeding, complications, possi...

1
Q: Sterilization permissible?

LeviAfter a man and wife had several children, would it be permissible for a man or woman to be sterilized? Any scriptural proof to show whether or not it is allowed?

2
Q: What is this unusual flowering vine?

Kurt TomlinsonWhat is this vine? It's located in Atlanta, GA. It has been flowering for the past several months. The photos were taken in late August, 2020. The flowers on this vine seem to be particularly attractive to bumble bees as there are always about a dozen of them on this vine's flowers whenever I vis...

21:27
2
Q: Common eigenfunctions of commuting operators: case of degeneracy

user266148As proved in the answer to this post, if the operators $\hat A$ and $\hat B$ commute, then they have the same eigenstates. Let $$\hat A\psi_{A_i}=A_i\psi_{A_i}\qquad \Rightarrow\qquad \hat B\hat A\psi_{A_i}=\hat B(A_i\psi_{A_i})=A_i\hat B\psi_{A_i}\equiv > A_i\phi .$$ Now, due to the vanishing o...

8
Q: pre-tenure faculty - should I ignore all possible troubles to get tenured?

user128851I'm a tenure-track assistant professor who started in this Fall. I heard that I should not get involved in any issues or conflicts to get tenured. However, I am unsure about this situation. I was in a romantic relationship with a professor in the school I was a graduate student over 7 years in ...

21:40
4
Q: Peter Rise was a wanted man.. how did he escape?

kaitlynmm569This is my first puzzle like this, so I hope you enjoy. It may be simple to experienced solvers, but I'm hoping it's a challenge to some. Peter Rise was a wanted man. He was always causing havoc. He lived on an island where everyone knew everyone. One day, he received a telegram, persuading him ...

1
Q: What is the difference between 星期日 and 周日?

Emmi WongI know the definition of both of these words are Sunday but in what context are they used?

21:52
2
Q: Force and Accleration

NimrodIt's just a basic question I had when I was studying physics years back, So acceleration have two equations $$a=\frac{F}{m}$$ and $$a=\frac{\text{d}v}{\text{d}t}$$ So by the first equation, if I'm pushing a wall, the wall does have an acceleration. But by following the second equation, since velo...

22:07
5
Q: Short research articles

queen28I am a masters student. I am interested in short articles which have counter examples and very few references. I want to write a short and interesting article. For example; One of the best known shortest and best academic paper articles I read is Counterexample to Euler's Conjecture on Sums of ...

GIS
GIS
22:23
2
Q: (QGIS) Get Python code from call

TimIs it possible to retrieve a Python code based on the action performed? I am not very known with Python and would like to know what code could be implemented based on what I just did from the menu. E.g. when I join attributes by location, I want to know what code would have been used if I had run...

4
Q: How to create OAuthToken using Apex

RobsI need to connect Salesforce with a 3rd party, which has a non-standard implementation of the OAuth2 flow. Which means a number of the initial steps need to be handled using custom built endpoints to receive the Authorisation Code and then request the Access Token and Refresh Token. But once I've...

DBA
DBA
2
Q: SQL Server not using nonclustered index

lbednaszynskiI have table which contains about 470mln of rows. I would like to select data based on date. I have two indices created on this table. One is clustered one and other is non clustered on date column (date is stored as INT). I have simple select statement: select * from big_table where [date] BETWE...

22:58
2
Q: ssh config: global settings vs `Host *`

Tom HaleWhat is the difference between ssh configuration file settings: At the top (global) level In a Host * scope? Assuming there is a difference, in which cases would each be preferred?

2
Q: Two adverbs in a row: "I counted my classmates one by one out loud."

Falls ChurchSeparation, if any, between two adverbs: (1) I counted my classmates one by one out loud. (2) I counted my classmates one by one, out loud. [comma] (3) I counted my classmates one by one and out loud. [and] I understand that there are other ways to express this concept and that out loud implies c...

AI
AI
23:45
3
Q: Why is the target called "target" in Monte Carlo and TD learning if it is not the true target?

Chukwudi OgbonnaI was going through Sutton's book and, using sample-based learning for estimating the expectations, we have this formula $$ \text{new estimate} = \text{old estimate} + \alpha(\text{target} - \text{old estimate}) $$ What I don't quite understand is why it's called the target, because since it's th...

6
Q: Repeating pattern of empty lines

Redwolf ProgramsWrite the shortest program or function that takes some text as input, and outputs either it or an empty line in a repeating pattern: some text some text some text some text some text some text ... This must continue indefinitely, or until some unpreventable limitation occurs (stack size, memo...

4
Q: Horror Short Story in which people make their face disappear with a certain hand motion

M. M.My mother recently remembered being told by a uni friend about a story in which the main character encounters a strange woman in a garden who then moves her hand in front of her face and makes it disappear; he flees in horror and retells the story to someone else, who then does the exact same mot...


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