Need help. I get the error below in Remix when I try to compile my code: DeclarationError: Undeclared identifier. Did you mean "tx" A friend of mine suggested that I should clean the caches. I did this but it didn't work. I also switched to a new chrome account and it didn't work. The code: //SP...

We have a storm coming in today so I spent the day yesterday cleaning my gutters which were chocked full of debris. They also a significant amount of roof material in my gutters (my understanding is I have asphalt shingles). I have not cleaned my gutters since owning the house (2 years) and my un...

Can somebody think of a proof (if it is geometric, better) that the incircle of a triangle is the smallest circle which passes through the three sides of a triangle? By proving this, one can demonstrate that the circumradius of a triangle is at least twice the inradius without calculating the dis...

Diamond-like carbon is an amorphous form of carbon, made of many small crystallites, mixing up the polytypes of diamond (most commonly the cubic lattice diamond, but also its lonsdaleite polytype with a hexagonal lattice and other forms). It is applied as a coating to lend some of the qualities o...

If a series has a unit root, then it is a function of random white noise. Therefore, it follows a random walk process. Is it then possible for: Some other series to Granger-cause the unit root series? Another model to predict the unit root series better than the AR process we tested for when co...

I do understand that if: $a=b \Rightarrow a^2 = b^2 $ But clearly, the graph representing these two equations won't be the same. So, (correct me if I'm wrong) this would suggest that if you square both sides of the equation, you essentially get a different set of answers (or graph). What confuses...

I found this worksheet going though some old notes. Unfortunately, it seems the answer key got lost. Can anyone help?

I wanted to check my understanding of predicting with a GLM: A binomial/logistic regression model predicts the binomial parameter = p = P(success). To convert the probability into classes, we have to add a threshold or cutoff. The same idea applies for a multinomial logistic regression model. A p...

This is an acrostic puzzle which uses cryptic clues. If you're unfamiliar with either or both of those, you can click the associated link. A complete answer should give the quote, author and source, as well as solutions and explanations of the cryptic clues. Oh, and in case you're too lazy to sol...

I'm new to Ubuntu - just installed a week ago and not familiar with terminology. My desktop has no top menu. I can't see the 3x3 dots Application icon shown in U-Tube guidance videos. When selecting Software in the menu I get SSL handshake error. I can't load any software e.g.can't link my HP ...

As per manpage, readahead is Linux specific: CONFORMING TO The readahead() system call is Linux-specific, and its use should be avoided in portable applications. and posix_fadvise is portable: CONFORMING TO POSIX.1-2001, POSIX.1-2008. Note that the type of the len argument was changed from si...

I'm supposed to turn base when I see my touchdown point is 45° off my shoulder. But I'm a newbie and final has a lot for me to handle all at once. I'm sure as I improve it will become easier, but what would be the harm if I extended the downwind by a short distance to give myself a little more ti...

In Harry Potter and the Deathly Hallows Part 1 (2010), Ron gives Harry a wand and explains: Took it off a Snatcher a couple of weeks ago. Don't tell Hermione this, but they're a bit dim, Snatchers. Why did Ron tell Harry not to tell Hermione this?

(Source: https://leetcode.com/problems/jump-game-ii/) Consider the following problem: Given an array of non-negative integers nums, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Your goal is to reach t...

How to handle Cyrillic ymbols with soul package? \documentclass[a4paper,10pt]{book} \usepackage{polyglossia} \defaultfontfeatures{Ligatures={TeX}} \setmainfont{Liberation Serif} \setmonofont{Liberation Mono} \setmainlanguage{ukrainian} \usepackage{soulutf8} \begin{document} \m...

I'm dealing with the expression $x = \frac{1}{3}y(y+1)(2y+1)^2(2y^2+2y+1)$. What is this approximately, if one is explicitly writing y in terms of x? There's no general formula for sixth powers unfortunately. Also can one given an approximation of this so that the difference between the true y an...

I really like the idea of the Wolfram Engine, and in particular using it via the python client library. However, I've having trouble understanding the syntax for even simple commands: is there some documentation anywhere (beyond the very limited reference docs)? In particular, is there documentat...

Some days ago I saw the accident of the airtractor that, just after a drop, suffered a spar failure in both the wings. Luckily the pilot survived. If load factor in his simplest formula is: n=lift/weight So if an aircraft experiences a sudden loss in weight, is natural to think that the aircraft...

I was solving the Helmholtz equation using Mathematica and got as an output an expression which is a summation. I first want to turn this expression into a function of $x$ and $y$. I then want to use Mathematica to plot this function in the domain $D=[-3,3] \times [-3,3]$ but I cannot figure out ...

Does the apache webserver (apache2) use log4j? I have Apache2 2.4.38 (debian) installed on Raspberry Pi OS (64bit) and found some strange records in my log regarding CVE-2021-44228 from kryptoslogic-cve-2021-44228.com (honeypot/scanner), dataastatistics.com (offline & malicious?) and a8fvkc.dnslo...

I'm currently learning the command line and I'm learning Positional Parameters. And I saw that the Positional Parameters end at nine, To use more than $9, I must put them in curly braces, like: ${18}. But what is the story of the nine Positional Parameters and not allowed to put more of them in s...

自分の経験を話して気持ちが軽くなりました。また同じことが起きないように国に言っていきたいです。(source) By talking about our own experiences the mood lightens. We want to keep on talking to the nation so the same thing doesn't happen again. いく and くる as auxiliary verbs still cause me a lot of difficulty. Is this sentence an example of this ...

世の高校生はこの「既読」がついたつかないで日々揉めているそうな。 Why is the past form of a verb and negative te form written next to each other? is it grammatically correct and what does it mean? Apparently it's the function of the suffix 付く meaning "to become (a state, condition, etc.), so this sentence mean "without becomin...

When the USSR broke up into fifteen independent states, it's well known that Russia inherited the nuclear arsenal of the dissolving state. I don't know exactly how this was decided: if it was just "obvious" given Russian dominance in the Soviet Union, or "right of might" since Russia was by far t...

I would like to plot this following code, but when I try it, it is not working. The only graph that gets plotted is the first one. \begin{axis}[ xmin = 0, xmax = 0.0009, ymin = -1, ymax = 1, xtick distance = 0.0001, ytick distance = 0.25, grid = both, minor tick num...

I tried to make similar text animiation like from game GRID 2. The text slides from vertical line but the text is cutted and theres clearly space between the line it comes out of. You can find the example here (the text on top left "WSR ODBYTE ZAWODY" Unfortunately blender wouldn't let me boolean...

I can't get rid of the white margins when producing a standalone chessboard using the xskak package (I have the same problem with the alternative chessboard package). Here is a minimal example: \documentclass{standalone} \usepackage{xskak} \begin{document} \newchessgame[labelleft=false,labelbot...

In What If...? (2021), the main character is "The Watcher", a cosmic being with the power to see all universes. He shows us various universes and finally However, in the comics, a character also referred to as "The Watcher" is Uatu the Watcher. Is The Watcher in What If...? actually Uatu the Wat...

I have been obsessed with trying to conduct an analysis in the “correct” way. I read that no time series analysis should be conducted on non stationary series. I found both my series have a unit root and therefore are non stationary, so I’ve been running analyses on the first differenced data. My...

I got a bit confused about how AC voltmeters on digital multi-meters work? I don't want to know about for example sampling method or conversion of analog to digital data. I need to know whether it can only measure the sinusoidal wave with only zero offsets? I tried to compare the AC voltmeter and...

I've read some about WWII, but until I started reading the book "Inge's War" (Svenja O'Donnell) I had apparently misunderstood Germany. I had envisioned Germany as its own entity. Inge's War tells the story of a young woman born in Königsberg, in East Prussia. I wouldn't have been able to find ...

I'm trying to train a semantic segmentation model based on this architecture, using this one as a base. The base model uses about 10 ReLU activations, and when implemented according to the first paper, the number jumps up to 14. The input images are of dimensions 216 x 64, and the output labels c...

Solve the Recurrence relations below for $a_{0}=1$ and $b_{0}=2$: $$ \left\{\begin{array}{l} a_{n} = 3a_{n-1} + 2b_{n-1} \\ b_{n} =a_{n-1} + 2b_{n-1} \end{array}\right.$$ I tried to solve this by adding them up together but I couldn't get anywhere. I would appreciate it if anyone could answer th...

I'm in the middle of remodeling my home and am wondering if there is anything that would be ideal to do now that would make a fiber install later more straightforward. My main concerns are with the exterior, both aesthetics and pursuing modern practices for preserving the house's air and thermal ...

Leaf-Crowned Elder has: Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Leaf-Crowned Elder, you may reveal it. If you do, you may play that card without paying its mana cost. Leaf-Crowned Elder is a Treefolk Shaman. Does...

I am trying integrate a ParametricNDSolve output (System2) whose initial conditions vary according to another ParametricNDSolve function (System1). The code I have so far is as follows. a = 3/100; b = d2 = 1; HMax = 1000;c=0.5; System1 = ParametricNDSolve[{X'[t] == X[t]*b*H[t]/HMax - X[t]*X[t...

Log4j has been ported to other languages, such as log4perl, log4php, log4net, and log4r. Are these ports vulnerable to CVE-2021-44228 as well? I believe that they aren't because the vulnerability uses JNDI (Java Naming and Directory Interface), which I doubt would be relevant in other languages.

In a book, I have the following definition: A subset S of a topological space $\displaystyle ( X,\ T)$ is said to be saturated if it is an intersection of open sets in $\displaystyle ( X,\ T)$. I believe the author really meant not "if it is an intersection...", but "if and only if it is an inter...

I was swapping Pokemon with a fellow trainer, and I ran into something interesting that I could not find an explanation too. While searching through my list, I saw I had a Machoke favorited. I clicked it and then checked its IVs. It was a 100%, and was about to back out and select something the d...

Sorry for my English, but I need help. I’m looking for a book with illustrations about a boy who had wings. I remember that the ending was sad; he ran away. I read the book in French in 2012 or 2013. In the early chapters, the boy was a child, and there was a doctor. Then the boy grew older. I’m ...

If a character who has a familiar dies and is then raised via raise dead or even reincarnation, is the familiar still bound to that character or is that bond broken at character death?

Part of Advent of Code Golf 2021 event. See the linked meta post for details. The story continues from AoC2017 Day 14. To recap: The disk is a rectangular grid with \$r\$ rows and \$c\$ columns. Each square in the disk is either free (0) or used (1). So far, you have identified the current statu...

I have seen some medical research papers which do various testings and none of them will adjust p-values accordingly. A lot of p-values are p-values of testing some simple hypothesis. Why people do not report adjusted p-values for multiple comparisons in those research papers with tables after ta...

It seems the first "real" virtual memory management system was the i386 with its powerful paging system that totally isolates processes. How did Unix work before this, ensuring no process write in another's process region etc ?

This is problem Suppose $f:\mathbb{T}\rightarrow \mathbb{C}$, and $f$ has continuous derivative on $\mathbb{T}$ then: $$\sum_{-\infty}^{\infty}|\hat{f}(n)|\leq |\hat{f}(0)|+\Big{(}\frac{\pi}{6}\int_\mathbb{T}|f'(t)^2|dt\Big{)}^{1/2}$$ using the Bessel's inequality, and cauchy schwarz inequaliy. a...

My mother's old bike is being used as a 'spare bike' for various of the kids. It's from the '70s, a steel framed, steel wheeled, dynamo lit, sit up and beg granny bike with a sturmey archer three speed rear hub. Surprisingly, the kids all like it. However, the front hub (also a sturmey archer) ha...

Consider the function from a real value to a complex value: $$f(x) = \cos(\sqrt{2} x ) + i \sin(\sqrt{3} x)$$ My contention is it never has the same complex value for two different real values of $x$. i.e. $f(x)=f(y) \implies x=y$ Is this true? Is there a proof? My second contention is that it ha...

I'm experimenting with the pykalman Python library to learn about Kalman Filters. In the code below, I'm generating a random walk where each step is the last step multiplied by 1 plus some noise: 1 + std_dev. In the first block, the covariance matrix of the KF (using a 1D signal/state, so it's ...

I have some questions in LaTeX， There are many "new" and "set" in LaTeX3， I don't quite understand when “new” is needed，such as \int_set:Nn \l_my_int{12} An error occurred ! Undefined control sequence. <argument> \l_my_int l.11 \int_set:Nn \l_my_int {12} also，i ...

Let $\mathcal{C}$ be a category, $id_\mathcal{C}:\mathcal{C} \to \mathcal{C}$ the identity functor. Prove that for any two natural transformations $\alpha, \beta : id_\mathcal{C} \Rightarrow id_\mathcal{C}$, $$\alpha \circ \beta = \beta \circ \alpha.$$ Here is my solution: Note that (is this ste...

It's common in subjects that have some version of the "yoga of weights" that you have a functor called "Tate twist" and that the most natural version of it seems like it should be the square of something which obviously doesn't exist. For example, in the category of mixed Hodge structures, there...

One of my friends rented this, probably in later elementary school to early high school (late 1980s to mid 1990s). There was a tournament with monsters fighting. I don't remember if it was brackets or a ladder tournament. The graphics were 2D. The monsters, as I recall it, were largely quadrupeda...

What are some ways of improving focus during longer timer controls? I mostly play blitz (3+0) and I have been moving towards rapid. I find that I see tactics more easily in my blitz games than in my rapid games, which is counterintuitive. I tend to lose focus rather easily.

This diagram comes from the textbook, Quantum information (Author: Stephen Barnett), fig. 6.13. The problem is what I know that T gate isn't a multi-qubit gate, so is it possible that T gate becomes controlled-something?

NOTE: This post may be deemed to insufficiently straddle the realms of science and philosophy; that it may be best asked in a separate stack. I have posted it here in the hope it contributes to a local accumulation of material relevant to the question of free will, and that whilst it focuses upon...

I clipped a concrete block at dead slow speed. It bent my rear bumper. This is the view of the full bumper now. You can see the "knee" I put in it. The bumper itself has a piece of angle iron running through the center to give it support. It is about 1/2" - 3/4" on each leg,as you can see here:...

I cannot remember where I picked this up, but during my time reading about polynomial approximation for floating-point arithmetic of sin(x), I vaguely remember that there is an extra step in argument reduction. Specifically, it seems to involve "constructing a polynomial approximation for sin(x)/...

I'm a beginner and came up with this simple project in C++. Any feedback would be very much appreciated. GitHub Repo Note: I'm using a file called "db.txt" as a database. main.cpp #include "Library.h" #include <iostream> #include <vector> #include <algorithm> #include <fstream> int main() { ...

For my project I am controlling a motor 12 volt 6 amps (forward & reverse direction) with the help of two SPDT Relays that are controlled by a 2 channel remote as shown below. Where do I put the flyback diode? (It's used for sudden voltage spike seen across an inductive load when its supply curre...

The December 12, 2021 New York Times Magazine puzzle section introduced a new type of word search puzzle, called Sit for a spell. It consists of an undirected graph of 13 vertices labelled by English letters connected as shown: (The generating code is below.) The task is to start at any node yo...

HistogramList gives the possibility to bin the elements in a list. Is it possible to have a logarithmic spacing? In an histogram I would do something like: Histogram[data, "Log"] I cannot find anything in the documentation...

As i understand, logback is also written by the same authors. Our apps are using logback instead. Is there a chance that logback is also affected by the exploit in log4j? This is critical for our organisation.

When a following vehicle slipstreams close to a vehicle in front, by placing itself in a region of air moving at a similar velocity to the front vehicle, it is afforded a benefit, e.g. improved fuel efficiency. Do the effects from this action introduce any type of inefficiency/penalty to the fron...

I have a box with a double receptacle and a switch where the switch powers an exterior outlet on the other side of the wall. In the photos below, the orange is the switched hot for that outlet. All receptacles I've tested in my house so far are grounded to the box, this one included. I was hoping...

In this video at the 2:40 minute mark there is a relatively clear image of the rear of a Blackbird. This is a new view - at least for me. Are those "ports" and, if so, what are they venting? IF not, what are they? Here is a snapshot at roughly that time:

I was just wondering how the following construction could be insecure. I can tell that known-plain attacks are possible, but I'm not sure about anything else. Let the user pick a password and hash it a sufficiently large number of times with something with preimage resistance like SHA256. XOR the...

Is there a way to reverse a colormap that is produced by the command Blend? In particular I wanted to reverse the parula colormap given in this link.

I wondering what precisely it was, in terms of predictions of observations, that General Relativity gets right, that QFT cannot explain. And what QFT gets right, that GR cannot explain. I'm assuming GR cannot predict quantum effects, like wave-particle duality, but is there anything else? Or a mo...

I have a question regarding the Log4j vulnerability (CVE-2021-44228) in some of my MySQL hosts. Even though I see it is not installed by MySQL, wanted to confirm if MySQL uses this package anyway for any of its feature. Is there a way to find out the list of applications that use a specific rpm ...

Can I say only "Do you know?" without saying the object in this case?: I'm looking for a flower shop around here. Do you know? How can I distinguish cases where I need to say object and where I don't need to?

In the Polar Express film, there is a scene where the Polar Express runs off the tracks onto a frozen-over lake, which supports it and doesn't collapse even after the locomotive tilting and hitting the ice with force twice. (This is disregarding the crack from the pin.) This Reddit post calculate...

I am planning to travel in the European countries (Spain, France, Italy etc) by car and would like to take my bicycle with me. Putting it on the top of the car would make the height higher. [Bicycle] ^ .--------. | | ==\ | ? meters .-O-------O-. V When driving on high...

do you know any textbook, or any website providing free lectures or lecture notes, or anything, that would introduce me to environmental economics? I have a master in economics so I am not against something with high mathematical formalization. Thank you

How do I find the cut off frequency of a low pass filter? Consider the following part: https://www.analog.com/media/en/technical-documentation/data-sheets/1062fd.pdf Edit: I have attached the schematic. What is it's cut-off frequency?

I have several lines that look like the following: "Timestamp": 200, "Timestamp": 1200, "Timestamp": 3100, I want to replace all the numbers, starting at 10 and incrementing by 10's so it looks like this: "Timestamp": 10, "Timestamp": 20, "Timestamp": 30,

I am stuck with the problem title. What would be a good way to build such machine? I think we have to start with just $s0→1$; $s1→0$; $s2→1$ But I don't know how to handle the "any bit string $s$" in the middle.

I have to find an answer on the following question but I am struggling: Consider a leaf of a decision tree that consists of object-label pairs $(x_{1}, y_{1}), \dots, (x_{n}, y_{n})$. The prediction $\hat{y}$ of this leaf is defined to minimize the loss on the training samples. Find the optimal ...

Although this topic has already been addressed in multiple popular questions of SE but i have few confusions in this regard Number 1) Link of question https://electronics.stackexchange.com/questions/86489/relation-and-difference-between-fourier-laplace-and-z-transforms In the top voted answer the...

I was checking the requirements for a score and saw this. 1.1.1.1-1.0.0.0-strings (3.3.2.2.1) - common woodwind doublings allowed I still don't know how to read the shorthand for orchestra instrumentation. What does it mean?

Do ghost writers have a claim of copyright? I am seriously wondering. Can a ghostwriter have a claim of copyright when they redact your work? Let's say they write a novel out of your manuscript, what would be the possibilities? Let's say that you didn't have a manuscript, is their claim of copyri...

I want to export a list with all the object in my scene, but i only want it to print a certain part of the name. The name structure is *xxxxxxx_yyyyy_bb-bb.*The X part can differ from 5 to seven digits. Is there a STOP sign for Python to read up to, so I can say: read until this sign and then sto...

I would like to generalise What are examples of grandmaster games where both Black and White castle opposite sides and the queenside players loses? Question: Is there a way I can search this up myself? Like perhaps in the chessgames, chesstempo, lichess or chessdotcom database or perhaps youtube ...

I've setup a master / slave Postgresql (13.4) group, 1 master and 1 slave, using WAL warm standby. (refer: https://postgresql.org/docs/current/warm-standby.html#STANDBY-SERVER-SETUP) The slave gone out of sync, and can't recover due to WAL not exists anymore on master, refer another question for ...

If everyone on a planet (for example on earth) simultaneously started running in the same direction, could the forces of their feet hitting the ground have an impact on how fast it turns? If there would be an effect but it would be negligible, how many people would it take before a day can be sho...

Say there's a once-Catholic adult who is considering attending a Catholic mass. This person was baptized Catholic as a baby, and received first communion when a child. This person did not go through the confirmation process, as their family has moved away from the church by that time. If this p...

This puzzle is part of the Puzzling StackExchange Advent Calendar 2021. The accepted answer to this question will be awarded a bounty worth 50 reputation.< Previous Door Next Door > Hokuro is a Kakuro-inspired puzzle type that was introduced on PSE about a year ago. The rules Each cell contains ...

Suppose, I have a long trace (e.g. 30 cm) that is driven from one end and that is carrying a DC or LF voltage (e.g. audio signal or power trace). The other end of the trace is high impedance compared to the trace's characteristic impedance: Either a high impedance device input, or it could be als...

The new vulnerability is wrecking havoc but very little of the discussion is voiced about the average android user. Is the average anroid OS user at risk? I heard that java's JNDI is not implemented in Android. But is that referring to the Java editors available for android or the android OS itse...

I am looking for examples of K3 surfaces that have a low Picard rank and at least one holomorphic involution. Here, low is no mathematically precise concept. I want to do computations with Monad bundles and for that lower is better for me. For Picard rank bigger than 5 those computations become t...

Can anyone tell me what this symbol is?

I get it would be painful no matter what but would no gravity make if less painful because the bone wouldn't move as much because of lack of gravity or would it here more because of it just floating around I apologize if this has already been answered sorry

I'm currently reading "Code Complete" by Steve McConnell. In section 13.3 "Global data" in last paragraph "Don’t pretend you’re not using global data by putting all your data into a monster object and passing it everywhere", he said: Putting everything into one huge object might satisfy the lett...

I didn't use AppleScript for a while now and I can't seem to code a script I need What I'm trying to do: list1: working day {"Monday", "Friday", "Saturday", "Sunday"} item to find currentDay : set currentDay to weekday of (get current date) as text (basically I want to check if I'm working today ...

use std::ops::Deref; use std::sync::{Arc, Mutex, MutexGuard}; struct Var {} fn multithreading() -> Var { let shared_var = Arc::new(Mutex::new(Var {})); /* multithreading job */ return *(shared_var.lock().unwrap().deref()); } I'm defining a multi-threading function to oper...

Below is a small example, where I would like to ask, why the eslinter for typescript is complaining about the object, that it could be possibly undefined in that case, where an undefined-check is actually added, just that it is extracted into a separate function, so that is gets a more meaningful...

I've found this quote in what appears to be the Usenet sci.lang FAQ page: Earlier historical linguists cheerfully reconstructed eight cases for PIE, on the model of Sanskrit; but the IE languages with many cases are now considered to be innovative, not conservative. The other cases developed fro...

I've connected Raspberry Pi with Raspbian OS to local network and set up the SSH login using ssh keys. I successfully log in just by ssh [email protected] (assigned static IP to Raspberry Pi). I have now removed the Raspbian OS, and inserted an SD card with Ubuntu Server (headless) on it. I tu...

Let $U,V,W$ be finite dimensional vector spaces over $\mathbb{R}$. Let $T:U\rightarrow V, S:V\rightarrow W$ be linear transformations. (i) Prove that $ker(T)\subseteq ker(ST)$ and deduce that $rank(T)\ge rank (ST)$ (ii) If $S$ is 1-1 prove that $ker(ST)\subseteq ker(T)$ and that $rank(ST)=rank(T)...

I want to implement a circuit that generates a random 4 bit using a synchronous counter. Is it satisfactory to achieve a "somehow" random generator by using a parallel 4-bit counter with the help of the clock speed? For example, a button is pressed within 5 seconds to display a random number. Wit...

If there are two values that are equal and minimum, the minimum function in "Select by expression" returns both of them. Is there any way to select by expression only one of them? If not, how to delete these repeated values, since I need only one minimum value?

When I was reading the interface3.pdf or the source3.pdf about the key-value part, I got confused when I saw <key>.choice: and <key>.multichoice:. The explanations and examples of these two command are very similar and from the information given, I thought <key>.choice: can do the job of <key>.mu...

Let $G$ be a finite group. Let $r_2\colon G \to \mathbb{N}$ be the square-root counting function, assigning to each $g\in G$ the number of $x\in G$ with $x^2=g$. Perhaps surprisingly, $r_2$ does not necessarily attain its maximum at the identity for general groups, see Square roots of elements in...

I have just unlocked the 'Barn finds' feature but only one is showing on the map. How can I find the others?

I actually had some workarounds and overcame my issue. But I still cannot understand some points. I'm trying to write a command to draw a table. I started with this: \documentclass[10pt]{article} \usepackage{xparse} \usepackage{tikz} \usepackage{hyperref} \usepackage{fontawesome} \ExplSyntaxOn \...

I have 6 SunHeater S120U panels as suggested for my pool size according to the Installation and Operation Manual using a ground install. However, I am limited to 10 feet of width, which with connector spacing will only allow 4 across per 20 foot section. There is more length to my available spa...

By Gustave Flaubert: We are workers of luxury. Thus nobody is rich enough to pay us. When you want to earn money with your pen, you have to do journalism, serials or the theatre. Bovary brought me 300 francs, which I had to PUT UP, and I will never make a cent from it. Right now I manage to pay ...

I've written a script to aid in creating new watchfaces for the awesome AsteroidOS project. A watchface there typically consists of directory structure like this: digital-shifted/ └── usr └── share ├── asteroid-launcher │   ├── watchface-img │   │   ├── asteroid-logo....

For which fields $K$ and integers $n>1$ does the group ring $K(\mathbb{Z}/n\mathbb{Z})$ have idempotents distinct from $0$ and $1$?

In this question, I follow the terminology and notation of the book of Watrous, most notably chapter two. Extremal channels An extremal channel $\Phi(X) \in C(\mathcal{X},\mathcal{Y})$ is a channel that can not be written as a convex combination of other channels. In other words, $\Phi$ is an ext...

Just after installation, desktop icons were quite small, way smaller than on Windows 10, and this suited me well. Then having once clicked right button on desktop and choosing "View", I accidentally clicked on "Small icons". As a result, the icons became larger (sic!), and now I cannot find a way...

I am considering getting a 100-ft antenna tower for mounting a weather station. However, the problem is how to erect it. It needs to be easily to lower in case I need to service the weather station. I assume I can put a heavy duty hinge or roller bearing at the bottom attached to a steel plate, p...

I'm attempting to create a new list using ListPicker[] to select elements from a list instead of: list={"English", "Japanese", "Spanish", "French"}; newList=list[[{1,4}]] Instead, I'm trying to do this in an interactive manner. ListPicker[{"English"}, {"English", "Japanese", "Spanish", "French"}...

This is about the relationship of the Son to the Father, and to the fact of Who actually came into the world via the virgin's womb. Different translations of 1 Timothy 3:16 read: “Hos was manifested in flesh” (... 'who' was manifested) rather than “Theos was manifested in flesh” (God was manifest...

There are 5 "armor" feats in PHB: Lightly/Moderately/Heavily Armored, Medium Armor Master, and Heavy Armor Master. Four of them add +1 Str, of those some allow +1 Dex instead; Medium Armor Master adds neither. I am considering that I let my player take the Medium Armor Master feat with +1 Str. Is...

I have a 2009 Mercury Milan, premier package with sunroof etc. I found a frozen spot of water (melted and smelled to confirm not antifreeze) about 1.75 inches in diameter near the center of the floor in front of my passenger seat. ("Near the center" = ~2" closer to the seat vs. the glove compartm...

Introduction My gnome friends are writing a programming language and have asked for my help. Due to their size, the gnomes can only handle small superscript numbers instead of big numbers. However, the language they're writing the interpreter in only accepts big numbers! Your Challenge Given an i...

In the final episode (No. 12) of TV-series, "I Claudius" (BBC, 1976), an ailing Claudius visits the Senate for the last time. There, having spoken a few sentences Claudius appears to enter a catatonic state in which he is approached by the spirits of his predecessors: Augustus, Livia, Tiberius & ...

In Act 4, scene 3, Macduff is talking with Malcolm. He has just heard the news that his wife and children have been murdered by Macbeth's forces. Then he says, He has no children. Who is "he" in this speech? The speeches just before this line don't mention any specific male character.

In a project we're working on, we had an electrolytic capacitor explode on us. It was a surface mount device, UCM1H470MCL1GS from Nichicon: So far, we've seen our project run for many hundreds of hours without incident, so I'm fairly sure there is no fundamental error in the circuit causing thes...

Faradays law, States that the induced EMF about a closed path is equal to the negative rate of change of magnetic flux enclosed by that path. Consider the classic magnet and conductor ring problem. If the ring is stationary and the Magnet moves, there is an induced EMF caused by the ELECTRIC fiel...

Say that a guy was dating this girl since he was a junior in high school and at the time she was a freshman. Say that they stayed together over the years and he is now 18 and graduated. Is this relationship illegal since he is an adult and she is a minor? Or is this allowed since they started dat...

I need do align some (not all) of equations to the left. So also I want to avoid weird formatting of them so that is what $\displaystyle ...$ does Interline space is tiny. To increase it, I can use \[ \] environment, but it centers equations: Though space between lines is ok. So I can try flali...

I have a code for polynomial multiplication and it is written in C. I heard that whether a particular instruction is "constant time" can vary by architecture and by processor model and there isn't any official documentation for this behavior. How can I understand if my code is constant time or no...

Can every multivariate distribution $p(X)$ of a multivariate random variable $X = [X_1, X_2, \dots, X_d]^{T} \in \mathbb{R}^d$, be defined as some function of univariate distributions on $X_i$? I cannot think of any reason this should be true, but I cannot find a counterexample.

I am playing Yuumi, the magical cat and have picked Ekko's ultimate 3 times, but have run into a glitch. Here's some background information, Yuumi's W lets you hop on to a teammate and become untargetable, and Ekko's ultimate makes a trail of your last actions, and when activated lets you go back...

Since the (relatively) recent addition to Disney+ of All Hail the King, a Marvel "One-Shot", I've been wondering: how many Marvel One-Shots are there? Where were they originally released? Are they still available or have they become ghosts of the past? I'm looking for: A complete list of the One...

Many credit cards have no annual fee and some welcome bonuses. For example, after one spends over a certain amount in the first say three months, the credit card user gets $200 reward. I am thinking about applying for such a credit card, using it only to get the welcome bonus, and then either lea...

It is possible to read reports with Apex with SOQL SELECT Id, Name, DeveloperName from Report However it is NOT possible to update such records. I decided to use jsforce in this case and Metadata API to proceed with my changes. I was able to change Name by retrieving the report with conn.metadat...

If I wanted to move my c-lightning node to an other machine, is there a way to do that (and how)? Specifically, without changing my node key or closing my channels? This question was asked by plant-boy on IRC.

Are there any guidelines yet on how to deal with the Log4J bug in Geoserver? https://thenextweb.com/news/log4j-bug-internet-open-source-contributors-analysis

the figure I try to create is below: (I try to make the same with the upper figure, the lower is mine but it seem to be not the same) My code: \begin{center} \begin{tikzpicture} [scale=0.5] \draw [magenta, thick] circle [radius=2] (0,0) node[above]{$R$}--(150:4.5cm); \draw [magenta, thick] (0,0)...

I ruled out choices C and D because $n$ is a natural factor of $(n+1)!$, so $n$ won't divide $n(n+1)! -1 $ or $n(n+1)!+1 $(that could be the case if $n$ is $1$ but this question concerns only primes). I would like to know how to choose between choices A and B. Alternative ways to approach the pr...

I have some difficulties understanding the difference between Q-learning and SARSA. Here (What are the differences between SARSA and Q-learning?) the following updating formulas are given: Q-Learning $$Q(s,a) = Q(s,a) + \alpha (R_{t+1} + \gamma \max_aQ(s',a) - Q(s,a))$$ SARSA $$Q(s,a) = Q(s,a) + ...