how can I remove the punctuation before the field "addendum"? Here is my MWE: \documentclass{scrbook} \usepackage[ngerman]{babel} \usepackage[utf8]{inputenc} \usepackage[autostyle=true,german=quotes]{csquotes} \usepackage[style=sbl,citepages=separate,backend=biber,sblfootnotes=false,ibidpage=tru...

I would like to understand more about QEC, such as surface codes, error codes, and qLDPC codes. For quantum algorithms beyond the Nielsen and Chuang book the lecture notes by Andrew Childs are a very good resource, and I'm looking for something similar for quantum error correction. Do you have so...

Is there an infinite number of logic systems? To answer that question you need to determine what the lego blocks are. To my knowledge, the only lego blocks that exist that make up logic systems are logic rules, and most logic systems have a set number of logic rules like maybe 5 or 6, but I can't...

On guitar you can play a "natural harmonic" by gently resting your finger directly over a fretwire and plucking the string. I am trying to determine the pattern to natural harmonics. I would like to be able to just name a string and a fret and instantly know which note would ring out if I did a n...

Relevant quotes: Enlarge. The target’s size doubles in all dimensions, and its weight is multiplied by eight. This growth increases its size by one category – from Medium to Large, for example. ... Animating Performance. By 6th level, as an action, you can animate one Large or smaller nonmagic...

I'm seeking a code review for the ~2000 lines of code. Makefile and tests are available at https://github.com/torrentg/logdb. I would appreciate feedback on the following aspects: Overall code structure and organization. Error handling and robustness. Efficiency and performance optimizations. Co...

We hear St Peter testifying before the Sadducees , of the authority under which he had healed a lame man, in Acts 4:10-12: ....by the name of Jesus Christ of Nazareth, whom you crucified but whom God raised from the dead, that this man stands before you healed. 11 Jesus is ‘the stone you builde...

I have just canceled one of the booking I did on booking.com. it was still in free cancelation date. but property just sent me a message requesting cvv number for card to get it refunded. never happened in previous cancelation. is it safe to give cvv number to property?

Suppose $\Omega \subset \mathbb{R}^d$ is a $C^{1,1}$ domain. Consider the biharmonic boundary value problem (BVP): $$ \begin{cases} \Delta^2 u = f \\ \nabla u \cdot \nu = g \\ u = u_D \end{cases} $$ wherein $\Delta^2 u = \Delta\Delta u$ is the application of the Laplace operator twice. (a) Determ...

When I am pedaling harder on a slope, the chain sometimes skips or gets detached from the front chainring. I have several videos shot with high speed camera in order to record what was wrong here. video 1 Video 2 Video 3 4k 60FPS Picture of Chain ring Can anyone tell me what is wrong with my bi...

Initially in my career, when I was sent an article to referee my decision to reject/approve used to be influenced on how "good" the journal was (IF, SciMago's Q). I.e.: if the article was ok but the results seemed "not enough" for a Q1 journal, then I would advise not to publish there. I no longe...

I'm rebuilding a rear wheel with brass nipples after some aluminum nipples have failed. I have troubles centering the wheel. The spokes are 260/266 mm DS/NDS long. The recommended spoke tension is 100 Kgf +10/-5, the rim is made out of carbon. I'm using a TM-1 spoke tension meter, the tension of ...

Kant rendered the judgments of reason as subjective, neither narrating nor accurately reflecting the reality of things. "We only sense from external objects, thus perception does not express reality but rather our emotional response to reality." Immanuel Kant(Sorry,i don't really know if this ...

The centre of a category $\mathcal{C}$ is the set $\mathrm{Z}(\mathcal{C})$ defined by $$ \begin{align*} \mathrm{Z}(\mathcal{C}) &\mathbin{\overset{\mathrm{def}}{=}} \int_{A\in\mathcal{C}}\mathrm{Hom}_{\mathcal{C}}(A,A)\\ &\cong \mathrm{Nat}(\mathrm{id}_{\mathcal{C}},\mathrm{id}_{\mathcal{C}}), \...

Found in Durnstein, Austria yesterday. I have never seen flowers seem to come from the main branches in such a vivid colour. What is this?

I have noticed that both Lombard, Venetan and Ligurian (and I assume Piedmontese) use "gh'" (i.e. /g/) for the 3SG dative clitic (Italian "gli") and at least some of the many functions of "ci" (Lombard "avegh" vs. Italian "averci"). Unfortunately I haven't been able to find where it comes from. D...

I would like to learn, how to find broken symbolic links, recursively given a path. Just as a precise reference of what I am looking for, the linux equivalent (that does not work in macOS) would be: find /path/to/directory -xtype l

TL;DR: I don't understand the dependency issue with binary classification (binary relevance) compared to multi-label prediction models. I often read in papers that some kind of "dependency information" is missing when a binary classification is used for a multi-label prediction problem. I mean a ...

I came across one paper with a very pleasing font and formatting. I tried many different fonts available but couldn't find the exact match. I also like the spacing and linewidth. I would appreciate your help identifying these items! The full paper is here https://arxiv.org/abs/2401.14953

I want to put a legend at the right-up corner, add background gridlines for every 5 units, fix the size of the picture (want to put different data in the same format so that value 30 in this graph is the same length with value 30 in another graph), wonder if there's a way to download the file in...

俺に何ができるのかずっと考えてる。。。 別にそれでよくないっすか? 何かできるとか思ってんなら思い上がりっすよ In the first bubble the character explain that "I've been thinking all this time what I can do" Then the character answer that to him. But I don't quite get his answer? "If you think you can do something you are being presumptuous"? Mayb...

I was wondering whether the decay of neutrons and protons (if they happen to be able to decay, as it is predicted by some GUTs) could be avoided in some cases. Let's begin with neutrons: In principle neutrons have a very short time when they are isolated (around 10 minutes) and they suffer beta d...

I can understand how a buck converter can step down the voltage but only with the formulas. I am struggling to understand intuitively how the inductor stores energy and releases it in a way so that the voltage is stepped down. Same thing for boost, buck-boost and other converters. Thanks in advan...

I have this MWE: \documentclass{amsart} \usepackage[cmtip, all]{xy} \begin{document} \xymatrix@R=2pc@C=2pc{ f\in\mathcal C^1(D) \ar@<.8ex>@{=>}[r] \ar@<-.8ex>@{<=}[r]|{\SelectTips{cm}{}\object@{/}}|{} & f\,\text{differenziabile} \ar@<.8ex>@{=>}[r] \ar@<-.8ex>@{<=}[r]|{\SelectTips{cm}{}\object@...

I came across this example in an old book. I have this question here. What is this point P, how is it defined? I did some calculations (implicit differentiation) and it seems to me it's the point where $x = \sqrt[3]{4}, y = \sqrt[6]{4}$. Why? Because it seems to me that's when the derivative $...

The Juice SSH app disables swipe typing and autocorrect on the keyboard by default. How can I switch these features back on? The Juice SSH FAQ says to swipe right on the keyboard1: In normal JuiceSSH operation autocomplete, autocorrect and swipe typing are disabled. If you want to enter text wit...

A machine world (or forge world, or industrial world, or factory world, etc. etc. etc.), as I will define it for the purposes of this question, is a planet (or sufficiently large moon or asteroid) whose resources, surface area, and governmental apparatus are entirely devoted to fabricating some g...

I'm not unaware that formalism alone employs the right concepts to understand what quantum superposition is, and the interference it makes possible. Nevertheless, I'd like to know what images, in the eyes and ears of physicists (not being one myself), to describe as loosely as possible this proce...

I've started to be a big fan of store-bought spicy ajvar, which is generally a delicious and low-effort spread for toast et al. However, all the jars claim something like "after opening, refrigerate and consume within 3-4 days", despite being essentially lightly pickled, cooked peppers and seem p...

I have a 3d mesh that I intend to print, a robot head. The head should be printed in a variety of colors, but the originator of the mesh didn't part it out. Here's an example: The red section is what I'd like to separate from the rest of the head. When I do that, here's what it looks like: I...

I want to start testing Ubuntu beta, but I don't want to download a new iso every time so I am using rsync. How do I use it to sync my local copy of the ubuntu iso with the ubdated on on the server. I use this command rsync -n rsync://cdimage.ubuntu.com/daily-live/20240419.2/noble-desktop-amd64....

I’m inclined to think that if someone says mathematical truth is empirical, it would trivialize the meaning of “empirical”. For example, to say that we do not know a priori the answer to certain math questions, and have to discover them through a kind of trial and error, with recourse to some ext...

I am trying to better understand SIGPIPE on linux. I ran this experiment: { ls -al /tmp/ ; echo "$?" 1>&2 ; } | head and it echos 141 which I understand is an exit code that is given to processes that exit with SIGPIPE Previously, I have done this a lot without understanding the nuances of SIGPI...

First, I feel kind of dumb -- I know never to click on questionable links. But a friend* sent me an email message to my iPhone 11 (iOS 17.4.1) with a link to a website with a picture of them. They're reasonably well known, so I thought, well, it could be, so I clicked. Safari brought up a scree...

Suppose I attempt to justify trusting my own thoughts with an argument. Suppose I read the argument and find it compelling. The very process of reading an argument (presumably written in English or some other natural language), understanding it, and having the experience of the argument "clicking"...

I am fairly new to hypothesis testing. I read that the F-test for equality of variance doesn't work well for distributions that aren't normal. Does this test work for truncated normal distributions for cases when the truncated distribution is symmetric?

I planted 10 Thuja fast growing Arborvitae trees 2 yr. ago. They are about 3-4 ft tall now. Just the other day I noticed very small light green balls on 4 of them. I don't know if this is normal or could it be diseased ? I live in Raleigh area of NC 27592

In this movie, Late Night with the Devil (2023), where the timeline is set in the 1960s or 1970s, one of the guests is smoking a cigar when the program is on the air. Were people allowed to smoke on TV back in the 1960s to 1970s?

So there's a multiple choice question that says, savings varies positively with the level of income and savings is IDENTICALLY equal to investment. Find the slope of the IS curve. Options are : Positive sloping Negative sloping Doesn't exist Vertical ^this is the only information given. According...

I'm writing up an academic document for which I have a max wordcount, using Overleaf's texcount with default settings to count words. By default this excludes equations (which is desirable) but this does not detect the IEEEeqnarray - is there a systematic way to exclude a type of environment from...

I wanted to see if my group of 8 long-time online friends, some of which had the same nationality and some not, would be clever enought to figure out where I've hidden a treasure somewhere in the world, so I arranged a puzzle for them. I sent them a message, in a group chat, of unique flight rout...

The equation is: x Log[x] - 3/2 x - 1/(2 x) + 2 == 0 Its root is just one, which is 1. Why does the output repeatedly write out 1 multiple times? Solve[x Log[x] - 3/2 x - 1/(2 x) + 2 == 0, x, Reals] get {{x -> 1}, {x -> 1}, {x -> 1}}

I am processing atmospheric data and I need to convert my raster input into polygons so I can find the intersection values between my pixels and other polygon features. I used the Raster Pixels to Polygons algorithm as a part of my process. Each input file has multiple bands representing differen...

As far as I'm aware, most forms of Vajrayana Buddhism (which is really only Tibetan and Shingon I think) are based on the Mahayana (Chinese?) canon and accept their sutras generally. Is there any form of Vajrayana which is based on the Pali canon?

I came across the word 直接的 in my textbook and became surprised because my understanding up to date is that 直接 could also be used as a 形容動詞, at least according to jisho.org and 大辞泉. If that's the case, what is the difference in nuance between 直接 and 直接的? Can you provide examples of other 形容動詞 that...

After a change of ISP, I've recently gotten IPv6 access, so I thought I'd play around a little with netstat to see if it's possible to get some kind of high-level per-protocol statistics from macOS Sonoma to see how much of my traffic is actually over IPv6. My experience with the BSD tools is lim...

Is there a way to do some limited dissolve either through the built-in Blender tools or perhaps through scripting (if not possible through Blender tools) to remove these types of vertices? Or do I have to remove them manually? I have thousands of these types of vertices. They cause the faces to b...

Here's my idea from the quick research: Miners use getblocktemplate RPC method. In the obtained block template, they remove some transaction and instead place in other transaction that wouldn't normally get there (e.g. 0 fee transaction for a friend). They use generateblock RPC method and prov...

I'm curious whether the bicycle (or at least a rudimentary form of it) could be invented with pre-industrial technology, ie a society that has not undergone even the early stages of the industrial revolution. Could said bikes be built differently, to travel on rougher terrain and unpaved roads?

A Primary School Story “Ranger Anne and the Clever Tiger” Inside it says: She thinks, “Tim, it’s time you got some exercises.” Why is it got and not get?

Are there any plans to place a telescope satellites on the far side of the Sun at the L3 Lagrange point? I think it would be useful for a number of reasons. It would cover our blind spot for incoming meteors and open our chances of seeing some rare astronomical events like supernovae that may be ...

I am looking for a book that develops the theory of Hilbert spaces, including the spectral theorems and unitary representations, but includes non-separable Hilbert spaces in the main exposition. Any special results for separable Hilbert spaces are carefully marked as such, so as not to confuse t...

I made a dynamic vector visualization vec3D[x_,y_,z_,m_,d1_,d2_,c_]:= {c,Arrow[{{x,y,z},x+m*Cos[d1]*Cos[d2], y+m*Sin[d1]*Cos[d2], z+m*Sin[d2]}}]} Manipulate[ Graphics3D[vec3D[0,0,0,m,d1,d2, Blue], Axes->True, PlotRange->{{-1,1},{-1,1},{-1,1}}], {{m,0.5,"Mag...

The Malcev completion of an abstract group $G$ over a field $k$ of characteristic zero is defined by $$\hat G = \mathbb{G}(\widehat{k[G]}) ,$$ the group-like part of the completed (by the augmentation ideal $I$) group ring. Question: Suppose that $G$ is residually nilpotent and torsion-free. Then...

I was reading a study on the synthesis of Diethyl Methylphosphonite and it mentioned three ways to make it. The first way they said was costly and complicated. The second way was then explained in the study alongside methods on how to improve it. This is all that was said about the third way "the...

I think this kind of question has been asked, but i couldn’t find it. Well i have already know things like symmetries, conserved quantities and Noether’s theorem, as well as their role in particle physics. But i still don't get the idea of this topic. For example, an object moving in $x$ directio...

I started with a $40^\circ$ angle: I then copied that to the other side with a compass, I then added a perpendicular line on each side to make it a right triangle, making sure both are the same length: I then drew a triangle with the width of the other two triangles, and with a height doub...

We can write Cyrillic letter Ш by the following. %definition of Sha \usepackage[OT2,T1]{fontenc} \DeclareSymbolFont{cyrletters}{OT2}{wncyr}{m}{n} \DeclareMathSymbol{\Sha}{\mathalpha}{cyrletters}{"58} How can I write Ж in latex ? Thank you for your help. Cf. The following is the first part of my...

I have this old spigot sticking up out of the ground. There is a newer working one that’s on the side of the house. I’d like to remove this one. I believe the pipe runs away from the slab that you can see in this picture. I kinda just want to dig it out a little bit and then cut it off annd bury ...

The above image shown is a pedagogical machine from the book kleppner and kolenkow My question is when we are talking about the acceleration of the whole system we do $$F=(M_{net} \text{of system})a$$ or $$a=F/M_{net}$$ The $M_{net} $ of the system should be $M_1+M_2$ we don't include the 3rd ma...

I'm just still a student, and the question doesn't concern me, but I'm really curious about the answer. In class, during a break, our assistant was discussing with us (the students) the research that was being carried out in his department, his own research, the areas of study of him and his coll...

Granted that physicists have always been concerned about causation, the laws of physics stated in terms of equations have nothing to say about causation. Are they correlational laws? When we say force is the cause of motion, we are talking metaphysics -- Henri Poincaré

There is a problem with the lm fonts. At some sizes the delimiters and the big operations (summation sign, etc) do not scale with the size of the font. The package fixcmex corrects this. (Hopefully the problem will be fixed in the original fonts eventually?). The mlmodern fonts are a darker ve...

It's known and documented that on the Intel 8080 most logical operations (including all OR and XOR operations) clear the half-carry (auxiliary carry) flag. A known exception is the ANA instruction, which updates it instead. According to the 8080/8085 Assembly Language Programming Manual (1981 ver...

In the midterm of probability in my university, they demand for us to calculate the derivative of $ h(x)=8\times\log_e{(\frac{x}{10})}$ and i find $ h(x)^`=\frac{8}{10x}$ but in the solution they write $ h(x)^`=\frac{8}{x}$ , i repeat the operation a lot of time but i can't find the same result, ...

I am in Italy for a short-term master programme. I am Albanian and we have the three-month Schengen visa available. However, my programme is 3 months and a half. I got my student visa (not Schengen) but the issue is that the embassy put 28/06, exactly the last day of school when I still have mand...

I have the following question. I have a text in which I want to insert a small mathematical formulation, namely in a bracket. Unfortunately, this mathematical formulation also contains a parenthesis, which would result in a double parenthesis in the text. Is this allowed in academic writing or do...

Many branches of Christianity believe that people who have done something wrong in this life will, in the afterlife, suffer an infinite punishment that is called hell. Hell is usually depicted as some kind of fire that burns souls, but souls being immortal, it lasts for eternity. Now, people who ...

Bridget Riley Bridget Riley (born 1931 in London) is an English painter known for her op art paintings. Alongside Victor Vasarely and Vera Molnár, she is one of the best-known representatives of this art movement. Bridget Riley at Gallery One, London, 1963 Riley studied art at Goldsmiths' Colleg...

Suppose I have a round loaf of bread, like the one in this picture. I want to eat it over multiple days, a portion each meal. What is the best way to cut it into slices to preserve freshness? Parallel slices like in that picture? Cutting it radially like a cake? Or maybe something different?

Is this sentence grammatically correct? These two people must be freelancers working hard on their computers. This sentence is a translation from Russian Эти два человека, должно быть фрилансеры, усердно работающие за компьютерам. The Russian sentence contains an introductory word (bold part)...

Android has an option to use a randomized MAC address to connect to a Wi-Fi network: How can I regenerate the randomized MAC address on Android?

So currently, I have two problem. The first one is that the result rendered is different from what is shown in the render preview in viewport shading. Render Preview: Render Result: The second problem is it takes a very long time to render. Is there any way the render time can be shorten a litt...

Just working on some characters and there's one who would be called "aunt" or "auntie" but in the most formal/respectful address possible. Specifically as the mother's older sister if that's important.

I'm learning Brazilian Portuguese via an app called Babbel. I've recently encountered an issue, which confused me. There was one sentence in one course section which read: Você quer ir ao cinema? The translation said: Do you want to go to the cinema? I don't think the course has taught anyth...

I want to illustrate in class that real-world applications of mathematics might take time to come to fruit. In this context, I want to find what the earliest real-world applications of Calculus and Linear Algebra were. By real-world application, I mean a device, instrument or technology which mad...

I was booking a hotel room via Agoda in the United States and saw that the claimed original price was much higher than the hotel price rate if booked at the hotel front desk or using the official hotel's website. I assume that Agoda is trying to inflate the claimed original price so that the "Ago...

Over the course of the game, the user generates a lot of very simple data. And array of strings (single letters), timestamps (int) and a boolean array, all equal in size. The length of this "save file" could be up to 1M each array. Though median size might be a lot lower, say a tenth of that. Wha...

I am writing a character for a tabletop rpg campaign in an high fantasy world which is starting a magitech revolution. She is a secret service operative and I was thinking of giving her this hybrid weapons to give her some personality. Since she is famous for her stealth capabilities, in a first ...

In the Fallout TV series (2024) Season 1 finale, Episode 8: “The Beginning," there's a scene where the top executives of the companies: Vault-Tec, RobCo Industries, Big MT, West Tek, and REPCONN Aerospace share ideas for the Vault-Tec Vault experiments. Before the TV series, the Fallout video gam...

In Jane Austen's Persuasion, Anne Elliot happens to overhear a conversation between Captain Wentworth and Louisa Musgrove, where they are discussing "firmness of mind". Captain Wentworth uses the example of a nearby nut to illustrate his point: [']Here is a nut,' said he, catching one down from ...

I don't know if I am doing things right. How can I improve my recipe? The recipe. Only 2 ingedients water and lentils. I buy 1 plastic package of lentils from the supermarket. Around 500g. I open the package and toss them into a sieve. I hold the sieve under running water. I tip the sieve into a ...

Statement: Create a script that, given an integer n, print a matrix of n x n with the numbers from 1 to n², arranged in a snail pattern. Example: 1 2 3 8 9 4 7 6 5 I'm concerned by code quality, maintainability and general advices. My implementation: import collections.abc import itertools imp...

I want to animate complex curves with shape keys. When I have overlapping curves within one curve object, Blender doesn't fill the overlapping parts. My desired output would be this, but as one object (so I need to animate only one object instead of many). So I'm trying to build something with ...

I'm trying to create a disk image and mount the partition for further work, but I'm encountering a frustrating error message: "wrong fs type, bad option, bad superblock." Here's the steps I took and the output I received: $ dd if=/dev/zero of=test.img status=progress bs=200M count=1 1+0 records i...

I want to define a minor mode whose global arg is set to t. To make sure the mode is actually active, I call describe-mode by typing C-h m. However, as soon as I add :global t the mode does not show in the list of active modes. Here comes a minimal working example (define-minor-mode test-mode "...

I am preparing a presentation with the default beamer theme, since I need something really simple. I am using a background image that has to fade from right to left, and I modified the margins in order to have the rightmost part of the image completely visible. The default theme allows the blocks...

UK parliamentarians are permitted to hold second jobs unless they are ministers. Many MPs, particularly amongst the Conservatives, have availed themselves of this opportunity. For example, Jacob Rees-Mogg is paid around £29,000 a month for hosting a program on the GB News channel. Similarly, form...

I've read about some studies on the Paley I Construction. Among them I found the following notations ( See this page: https://documents.uow.edu.au/~jennie/matrices/32P02.html ). $$SNF:1,2^a,4^{b},8^{b},16^a,32$$ I am not familiar with these notations. Could you please recommend me some books or a...

I set some session data for a user I auto logged out. Then tried to retrieve that session data in a form validation. It is not there. class MFAController extends ControllerBase { public function sendOTP(int $uid, Request $request): RedirectResponse { if (empty($uid)) { \Drupal::logge...

I'm working on a calculus problem and need help solving the following definite integral: I'm struggling to simplify the integrand or find a substitution that makes the integral easier to evaluate. Here's what I've tried so far: Attempt at simplifying the inner square root. Checking if the funct...

The image alt tag shows the post title in the source instead of the Alt Text. function my_custom_image_sizes() { add_image_size('homepage-thumb', 329, 185, true); } add_action('after_setup_theme', 'my_custom_image_sizes'); function my_custom_thumbnails($html, $post_id, $post_image_id, $size,...

I have mounted a STM32F446VETx on my PCB as shown on a picture of my PCB: For me the pin 1 marker in the big mark at the top right of the picture, near C67. But, after a lot of trial, I can't connect my ST-Link 3 to it. I checked the SWDIO, SWCLK, NRST and power signals. They are all connected t...

Let $\mathcal{C}$ be a small category. Functoriality for presheaves says that for any functor $u\colon\mathcal{C}\to\mathcal{D}$ the precomposition functor $u^*\colon PSh(\mathcal{D})\to PSh(\mathcal {C})$ has two adjoints $u_!, u_*$ on the left and on the right correspondingly, see SGA 4, Exposé...

This question is related to this question. If I write a thesis and encounter a small problem that I can't resolve on my own, maybe because I didn't sleep well this day, and someone, like my mother or anyone else, suggests something like, 'Oh, that's trivial, you could use Theorem XY or fact YZ,' ...

I have a problem writting big text comment in algorithmic. The second like starts with 0 padding from statement indexing. Is there any solution to force second comment line start on level of first? Here how it looks like. Inserting start of code till the problem line. Whole code is pretty big. \...

This is the theorem to prove. Below is my proof that I consider rather long and complex. The given data is on this drawing: Construct $\angle DCE = \angle DCB$. The point $E$ on ray $CE$ is chosen in such way that $CE = CB$, and that is always possible by segment construction axiom. Connect...

Many of my friends spend hours and hours mindlessly scrolling on TikTok and Instagram each day. They benefit very little from this, if at all, and it saps big chunks from their day. I've been there too... minutes turn into hours and suddenly you're looking at 3 hours of Instagram on your screenti...

I have a 1.0 transmission material and i would like to add a transparent layer with white color. Here is my png : Here is my shader and the result. I just want to have the eyes in white color... (Just so you know, there is an object behind with a gradient emissive color). Thanks for your help!

I am running Fedora 39 completely updated. Unfortunately, whenever I connect my Apple Magic Mouse via Bluetooth it disconnects after some time. Researching this issue led me to buy a Bluetooth Dongle. This brought me one step closer to having a fully functioning mouse, but as said not 100%. What ...

Beginner puzzle This puzzle is intended to be suitable for people who are new to puzzle solving. Clarification: Both experienced solvers and new solvers are welcome to post solutions to this puzzle. The number 606 is written on a sheet of paper. What operation must be performed to make the num...

So, i was wondering: Planets, Stars, etc. Have a similar behavior to us, humans. I mean, they consume energy to stay "alive" and when this energy ends up they "die". And in the end we’re all the same "cosmic dust" from the beginning, that has become: Oxygen, Carbon, Hydrogen, etc. But what if the...

The following circuit diagram is from a book on electronic circuits. The Current source \$I_s\$ is driver of the amplifier. It was written that this amplifier has negative feedback. It seems that if the current \$I_s\$ increases a small amount in magnitude, voltage at the drain of the MOSFET \$Q_...

I encountered an issue with the following code, provided by NickD as an answer to a previous question (link to the question): (defun my-add-string-to-list (LIST-VAR STRING) (add-to-list LIST-VAR STRING t) (buffer-string)) ;; just to show that the function does not return a list (defun my-fai...

Is there a way in Mathematica to simplify expressions based on inexact or "relative" assumptions such as $x<<y$ or $x\approx y$? I see Simplify[expr, assum] takes an Assumption, e.g. Simplify[Sqrt[x^2], x>0] Simplify[Sqrt[x^2], Element[x, Reals]] But these appear to require exact assumptions....

So there was this exercise in my book (picture below) a compound I got to the conclusion that the compound might be either 2,6-di-tert-butyl-4-methylphenol or 3,5-di-tert-butyl-4-methylphenol. I was searching for some clue that would help me to distinguish between both of these compounds and the...

The above image is a floral diagram of the family Solanaceae So I was hoping someone could explain how to read this floral diagram The Centre suggestion axial placentation to me The ameboid like structures suggest that it's bisexual And the aestivation of the petals suggest Valvate aestivation ...

Given a probability distribution $F$: Let $X=F^{−1}(U)$ and $Y=F^{−1}(1−U)$, where $U$ is uniformly distributed on $[0,1]$. How to prove $\operatorname{Cov}(X, Y)<0$? I think $E[X]=E[Y]$ and the focus should be on proving $E[XY]<E[X]E[Y]$, but how to deal with the $E[XY]$ term $?$.