I bought some old chess books from the 80's, 90's, early 2000's, and some even older ones. Certainly they are not engine proofed or checked. Are there sites that are dedicated to checking these books to find where they go wrong or if they are right at all? And if my particular book is not checked...

Given two ciphertexts encrypting the same (natural language) plaintext, where we know that one of the ciphertexts was encrypted with AES-CBC (and unknown IV) and one was encrypted with AES in EBC mode, and given that neither of the two ciphertexts has any duplicated blocks, are there any statisti...

Is there a train (or bus, if no train) from Barcelona Airport (BCN) direct to Sitges? I am looking on the Rodalies Train/Transport website and there are multiple stations in Barcelona to choose, but I don't believe any of them are actually at BCN. Flying in to BCN, would one need to go into the ...

I've a difficulty to use the Notam decoder on this Notam. V0018/24 NOTAMN Q) OOMM/QPIAU/I/BO/A/000/999/2336N05816E005 A) OOMS B) 2401250001 C) 2405160001 E) [US DOD PROCEDURAL NOTAM] INSTRUMENT APPROACH PROCEDURE NOT AUTHORIZED ILS RWY 08L. Also what is US DOD in this context?

I want to show that the sequence $x_n=\left(\frac{5k^2}{k+1}\right)^k\cdot\frac{1}{5(k+1)}$ diverges to $\infty$. I struggle to show this formally, I know that $x^k$ for $x>1$ will "win" against $\frac{1}{5(k+1)}$ but I don't know how to show this formally. Thanks in advance!

I hope you’re all doing well. I’m currently working on a project where I need to model a chef’s hat with intricate folds, but I’m facing some challenges in figuring out the best approach. I have a reference image of the specific hat I want to model, but I’m struggling to translate it into a 3D mo...

Some time a go I heard from Bitcoin Mechanic that there was a coin join implementation that inscribes some data that they need in order to determine their pricing. Is that true? Do custodians such as Liquid use OP_RETURN for anything? Other than for many forms of spam, what is OP_RETURN used for ...

Why did Silk Spectre II put her costume back on in Watchmen #7? What did putting on a costume and being a superheroine do for her? I know Laurie hated being a superheroine but I never got why she also liked it a little bit too.

Dealing with a one-file elisp package, I wonder if there is a nice way to see unused functions and variables after some major refactoring. I can go through the code and do xref-find-references. But maybe there is an easier way to get a quick overview, even for the price of false positives.

So I had the following situation in a very casual MtG match: I've played Chandra, Flamecaller, a 4-loyalty planeswalker; Then my opponent cast Boros Charm "in response to" that spell, targeting Chandra herself. I argued that it was not possible, since at that moment Chandra was not a valid targ...

This question has come up in my algorithms and physics research. I apologize if this is very basic, but I am new to number theory and it seems this is a number-theoretic question. What can we say about positive numbers $x >0$ for which there exists a constant $C(x)>0$ depending on $x$, such that ...

For $n\geq 1$, endow $\mathbb{R}^n$ with the usual scalar product. Let $u=(1,1,\dots,1)\in\mathbb{R}^n$, $v\in {]0,+\infty[^n}$ and denote by $p_{u^\perp}$ and $p_{v^\perp}$ the orthographic projection onto the hyperplanes $u^\perp$ and $v^\perp$. For $x\in\mathbb{R}^n$ such that $x\notin [0,+\in...

"38 “You have heard that it was said, ‘An eye for an eye and a tooth for a tooth.’ 39 But I say to you, Do not resist the one who is evil. But if anyone slaps you on the right cheek, turn to him the other also. 40 And if anyone would sue you and take your tunic, let him have your cloak as well. ...

Hobbyist dev boards are typically powered by USB and the GND and VBUS pins of the USB connector are usually broken out as pins on the board (so, that one can power additional devices connected to these pins). I've always expected to see a diode on the board between the USB connector and the pin t...

Mainly I'm asking in case I get thrown into a situation similar to the Tournament of Power from dragon ball super, or most of the other tournaments in z and super, where I can't use weapons. Is there a path that boosts unarmed strike when raging?

Pathfinder 2e designer Michael Sayer made a post describing the game's assumptions of how spellcasters are intended to play, which I found completely baffling, and totally at odds with any game I've ever played. ...What [the game] does assume, though, is that the wizard will have a variety of op...

I had planned on creating a Twitch/YouTube channel. My username on ps4 and other places contains the name of a DnD monster (the bugbear.) Would my channel ever be in danger of action against it from WoTC for using the name?

I can't remember the name of the manga, but I do remember that the main character (MC) is playing her favorite video game when she is trying to find one of the legendary wish granting stones that is hidden in a dungeon. When she finds it, she is reborn into the game world as a baby version of her...

The last person I witnessed use a mortar and pestle was my grandmother, and even she was dissatisfied with how a few grains of coriander might regularly fly off. But mortar and pestles remain very much on sale at stores and online (and most are not provided with a "safety cover"). This suggests t...

I have been trying to remove the P Trap to clean it. I can turn the 1 on my right to loosen it. However, for the 2 on the left, I can’t seem to loosen it. It won’t budge left or right. Do I need a plumber’s wrench? Also which direction should I be turning it? Thank you

We asked the simple question to Google: latex how to produce embossed text To which Gogle came back with: Generative AI is experimental. Learn more There are a few ways to produce embossed text in LaTeX. One way is to use the \emboss package. This package provides a number of commands for creati...

I had planned on creating a Twitch/YouTube channel. My username on ps4 and other places contains the name of a DnD monster (the bugbear.) Would my channel ever be in danger of action against it from WoTC for using the name?

I have been in contact with a professor since October last year about a post-doc position. We had three meetings so far. The first one to get to know each other better and to establish the project's subject. The second one, after I wrote 12 pages, to develop the project. The third one, after I wr...

TLDR: If you have two record collection variables that have the exact same records, in the same order, how can removing one from the other NOT result in a blank collection? Full question with background: I have a custom object named Board, with two custom lookup fields to a contact record: Primar...

In a previous question addressing skeptical analogies aiming to cast doubt on the evidential worth of testimonies for extraordinary claims, I cited this source which I'd like to revisit here with a different focus: Stephen Meyer: And then that there were reports that he had been, that he had app...

I want to mount a board to the wall like in the image. It's currently rectangular, so I need to cut out the blue section. How do I mark the board correctly before cutting? It's not quite trivial, because the angle Alpha is more than 90 degrees, maybe more like 95 - but I can't measure it. If the...

For a number of month, the British Post Office scandal has been a leading item in British news largely thanks to a an ITV television drama. For those who don't know about the scandal, the short version is that the Post Office falsely accused a large number of postmasters of fraud and embezzlement...

Here is what I know, I would like similar information for other European countries. UK At your retirement age, you may apply for a bus pass. There is no fee but you need to apply. This gives you free travel on local busses (1) after 9:30am. (1) Not just local to you but it does not include long...

So, I came up with a concept for an NPC character for pathfinder 1.e that involved a grey paladin with the pact servant trait not just being basically a pseudo hellknight, but being a direct worshiper of Asmodeus not evil so much as misguided. He would be someone who genuinely believes that a wor...

At what temperature does the vapor seen on aircraft maneuvering form? I know this highly depends on humidity, but is there a general calculation? When doing my research, I found this page, but it only really talked about how air can't turn into water. I'm fairly sure that the temperature this ...

In computer security, the initialism or three letter acronym "DOS" often stands for "Denial of Service", as in a "DOS attack". Sometimes it is used as a verb: "One hacker says to the other 'I will DOS you' " Q: how would you spell the past tense of "DOS" used as a verb? "He dossed me" "He D...

I am drawing bezier curves onto 3d objects for a project. So far, I have been doing it like this: Add a new bezier curve Go into edit mode, select the draw tool, set depth to surface, and draw my curve with the mouse After the curve is drawn, I go into Data --> Bevel, and create a round thickne...

I forgot an expensive jacket on an airplane, in the overhead bin. I realized it long after I left the airport. I agree that this was a dumb move - the cabin temperature was quite warm, and the weather on arrival did not mandate such a jacket. I landed at TLS (Toulouse Blagnac) on an easyJet fligh...

So I have a file full of test commands that I like to run against some of my functions to make sure they are handling all possible situations correctly. No point in having duplicate commands tho. Here's some examples: rap ,Xflg MIT X11 rap ,XPBfl 'MITER' rap ,Bflg share git-grep ...

A current carrying wire produces an electromagnetic force. The magnetic aspect of this force is perpendicular to the wire, and the resulting magnetic force field lines point in the clockwise direction - always. You can verify by holding a compass near a current carrying wire and observe that Nort...

I'm not able to remove the space in the table on the right in the below example: \documentclass[runningheads]{llncs} % \usepackage{subcaption} \usepackage{amssymb} \usepackage{booktabs} \usepackage{tabularx} \usepackage{amsmath,array,booktabs} %\UseTblrLibrary{amsmath, booktabs, counter} \newtheo...

According to my understanding, the butterfly effect says, very informally, that even a tiny perturbation in a physical system can lead to significant alterations in future states of the physical system. But, I am looking for a more formal and rigorous definition of the butterfly effect, for two r...

From my couch-level understanding of the equivalence principle it seems like unless the source of the gravitational body on that side of the equation was infinitely sized, it would be simple to measure a difference between the two as the gravitational field of a non-infinite body would always hav...

I am self-studying measure theory using Measure Theory by Donald Cohn. The book makes the following definition: Definition$\quad$ Suppose that $f:X\to[-\infty,+\infty]$ is $\mathscr{A}$-measurable and that $A\in\mathscr{A}$. Then $f$ is integrable over $A$ if the function $f\chi_A$ is integrable...

THE KNIGHT'S CENTURY. THEN Dr. Bates drew on a large sheet of paper a reduced chessboard of twenty-five squares, and numbered it in the manner shown in our diagram. He then placed a chess knight on the central square, which was not numbered, and asked us to make a series of knight's moves (as man...

In Dhammapada, verse 129, Buddha states: All tremble at violence; all fear death. Putting oneself in the place of another, one should not kill nor cause another to kill. Taking this at face value, obviously however, not everyone fears death. People who had their amygdala removed or atrophied du...

I am an engineering student and am trying to prove the following combinatorics identity in math: $$\sum_{{m=k}}^{N} C(m,k) = C(N+1, K+1)$$ It was suggested to me to use Proof By Induction so I tried to do this problem. Step 1: Show this identity is true for a specific choice of $N=K$ LHS: $$\s...

I'm living in Belgium, very near to the border with France. I'm 51 years old. I just had a discussion with a younger Walloon colleague (about 35 years old) about the French word for "waitress". My colleague claimed the correct word being "serveuse". I'm convinced the correct word is "serviteuse",...

On a crowded train, there is no available seat. An old man gets on the train looking around for a seat. You stand up and give your seat to him. Do we have a specific verb to express "you give a seat to an old person on a train when no seat is available"?

Due to re-entry heating and the sheer velocity when coming in from solar orbit into the Earth's SOI, will Starship do a capture burn to slow it down before entering the atmosphere or just go for a direct encounter?

I have a 2x9 crank and cassette system. And I can't get it to go on the last cog because my rear derailer is maxed out. I bought a used and altered MTB and I can see the chain is short. So typically how many links are in a chain for this crank system?

I'm trying to add a logo to an object. The tutorials I watched instructed to export an Illustrator file as SVG. Then import it into Blender and shrink-wrap it to an object. I followed instructions (I think) but the white and grey parts of the logo aren't showing up even though the vectors for tho...

So the origin of my question is from a model known as VSEPR which helps you predict the shapes of molecules. According to this model, the bonds (or electron groups) arrange themselves in space in such a way that they are at maximum angles to their adjacents and therefore electrons experiencing mi...

Consider the subvariety of Spec $\mathbb{Q}[x,y,z]$ cut out by the equations \begin{eqnarray*} f_1: a_1x^2 - y^2 - b_1^2 & = & 0 \\ f_2 : a_2x^2 - z^2 - b_2^2 & = & 0 \end{eqnarray*} where $a_1,a_2,b_1,b_2$ are positive integers, lets assume all distinct. By Legendre's theorem, the equation $f_i ...

The level of technology is mostly on par with that of the early 1970s. Hovercraft similar to the SR.N6, Bell Aerospace Voyageur and Lebed are what is available. Other methods of transport are at the level you would expect for that era. The primary terrain being considered are open, smooth deserts...

大家好! 这是我第一次用这个网站。谢谢大家的帮助和推荐 目前正在练习用比喻。我想用中文说："Time is like sunlight and habits are like trees. The habits that receive your time will flourish. If you give your time to good habits, they will grow tall and wide, to the point that no light can reach your bad habits. Thus, your bad habits wither away.

I need a fast +,-10V pulse. I thought I could trigger the base of a switching transistor with my fast rise time digital I/O and get a 0-20V at the collector and then shift the DC to 0 volt and have a symmetrical +,-10V pulse. the first part of creating the 20v pulse is easy. But is there an easy...

New to bash scripting and looking to tidy my screen. I have a number of terminal windows running separate process but all with the same window title. Using the following i can change the title.. all well and good: PS1='\[\e]0;TEST TITLE HERE: \w\a\]${debian_chroot:+($debian_chroot)}\[\033[01;32...

There is an additional rule called V2 in main clauses, which moves the finite (inflected for subject) verb into the second position in the sentence. '' which '' refers to which of these ? usually it should replace the word closest to it, but it didn't make much sense here ? I always get confused ...

I am a British national living in France with the post-Brexit titre de séjour (i.e., it never expires). I don't have any other kind of French ID, nor French nationality. Do I need my French titre de séjour when flying within Schengen (e.g. Paris to Rome and back again) or is my British passport e...

I recently encountered the Four Divisors problem on LeetCode and managed to achieve a 100% beat rate with my solution. I'd like to share it with you all and gather feedback on its effectiveness and potential optimizations. Brief description of the problem: Given an integer array nums, return the...

Y'all remember that old adage about how knowledge is power? When that knowledge is magic, specifically the type of magic that can do almost everything, the adage becomes a lot more practical than metaphorical. Since magic, despite having a genetic component, is something that takes years of study...

Is there any difference between "stay the course" and "stay on (the) course"? Is "the" necessary in "stay on (the) course"? We will stay on course rather than change course. We will stay on the course rather than change the course. We will stay on the course rather than change course. I have no...

It is said that Least Squares estimates would differ from Maximum Likelihood estimates if the underlying data were non-normal. This should be the reason why LS estimates can be used in linear regression, while for generalized linear models, the parameters are derived from ML estimates. Even thoug...

I'm trying to set up a load balancer with HAProxy, but I'm having trouble understanding how to configure it. Can someone provide an example configuration?

Using ForwardDiff in Julia gives me the following values for 2 matrices I have tried to use JAX to auto differentiate the same function in Python but I am getting the following results for A and B respectively Both results have the same structure but have different values. Are both results eq...

I know it can install apps, change settings on the Mac automatically. I’m concerned about things like: monitoring my screen without my consent decrypting TLS traffic send data to the server for censorship or monitoring Is there a list of capabilities of MDM?

Brier score can be computed for joint predictions of multiple variables, each with multiple categories. Let's say we have 4 variables with 3 possible classes each. In that case, the denominator of the Brier score is 4 (as it seems implied in the original 1956 Brier paper) or 12 (as seems implied ...

I want to include a ods file using the odsfile package in combination with the tabularray package. However this results in an Misplaced alignment tab character & error. Here is a M(n)WE: %% Compile with lualatex \documentclass{article} \usepackage{odsfile} \usepackage{tabularray} \tabletemplat...

I am looking for some advice to return to academia around financial math and related branches. I used to be a pure math enthusiast. Back in my school days, I was a competitive mathematician (qualified Japan MO) and programmer which got me interested in the subject initially. I eventually decided ...

A space is realcompact if its a closed subspace of an arbitrary product of real lines, with product topology. A cardinal $\kappa$ is called measurable if there exists a (countably additive) $\{0, 1\}$-valued measure $\mu:\kappa\to \{0, 1\}$ with $\mu(\kappa) = 1$ and $\mu(\{x\}) = 0$ for $x\in \k...

I have problem with italicization using \let\eachwordone=\it for Times New Roman font from \usepackage{times}. Here is my tex document: \documentclass[10pt]{article} \ExpandArgs{c}\newcommand{new@fontshape}{anything} \usepackage{linguex} \usepackage[russian,indonesian]{babel} \usepackage[none]{h...

On the day of my Canadian visa biometrics, I had a slight cut on the upper part of my upper thumb due to a razor. It didn't bleed or anything. I informed the biometrics officer about this but they said it wouldn't be an issue. Subsequently, the scans of all 10 digits were taken. I am a bit concer...

In wikipedia, the notion of straight line is described as a basic notion, a primitive that is not defined. I wonder if there're any formal definition for a straight line in any specificular context so far, for instance in $\mathbb R^n$, in differential geometry .. ? Thanks.

I have to present my study as a poster and, in order to make my results more visual, I thought it was a good idea to report them as a forest plot. However, it is ok to use a forest plot to report the crude odds ratio (obtained using univariable binary logistic regression) or can this type of grap...

Rhiannon's choice is a concept from a science-fiction novel to describe a common dilemma for that society. I just can't recall where is it from or what it is about! I recalled it while reading Seth Dickinson's "Three Bodies at Mitanni" which is a story about 3 officers whose job is to visit seede...

Presently a fueled passenger jet is a flying bomb. Is there any hope in the near future of chemically reducing the flammability of jet fuel on impact?

In the regular pyramid P-ABCD, where PA = AB = 2, sketch its figure and calculate its volume. Clear["`*"] a = {0, 0, 0}; b = {2, 0, 0}; c = {2, 2, 0}; d = {0, 2, 0}; p = {1, 1, Sqrt[2]}; pyramid = Graphics3D[Polyhedron[{{a, b, p}, {b, c, p}, {c, d, p}, {d, a, p}}], Axes -> True, Boxed -> Fal...

Let $G_1$ and $G_2$ be $k_1$ and $k_2$ critical respectively. That is $\chi(G_1) = k_1$ and $\chi(G_2) = k_2$ and the removal of any vertex or edge reduces the chromatic number. I am trying to prove that the sum $G = G_1+G_2$ is $(k_1+k_2)$ critical. $G$ is the graph obtained by connecting every ...

There is a grammar textbook that gives the following example. (a) It looked more like a cormorant than a heron. (b) It looked more like a cormorant than like a heron. The textbook says that (b) is better than (a), but the thing is that I have never heard or seen any instance of (b) in my life. ...

I started using CASTEP (academic license). I have a little experience with Material Studio Visualizer, but now I cannot afford it. Would you please suggest nice tutorial(s) for beginners to CASTEP on basic calculations (e.g. structural optimization) WITHOUT Material Studio Visualizer?

I have a list of triangle coordinates in 2D-space: Clear["Global`*"]; lst = {{{3, 18}, {15, 0}, {16, 5}}, {{3, 18}, {15, 10}, {16, 5}}, {{-2, -7}, {3, 18}, {8, 17}}, {{-2, -7}, {8, 17}, {15, 0}}, {{-2, -7}, {8, 17}, {15, 10}}, {{-2, -7}, {8, 17}, {16, 5}}, {{-2, 17}, {3, -8}, {8...

In a smart contract, I want to maintain a set of addresses independent of the order. Would the sum of the hashes for each of the addresses be a cryptographically secure approach? If I do: root = bytes32(uint256(keccak256(addr1))+uint256(keccak256(addr2))+....+uint256(keccak256(addrN))) would the...

2010 Silverado 1500 When the headlights are in AUTO mode, the headlights automatically turn on when it’s dark at night. What mechanism is used to sense the light level to turn on the headlights? Where is the sensor located?

How to convert the form of a solution from solve as follows: {x -> 1, y -> 1, z -> Sqrt[2]} into a list form {1, 1, Sqrt[2]}?

This question applies to both mercury and alcohol thermometers. I assume the answers would be similar, but maybe not. My understanding is that the capillary in a liquid-in-glass thermometer consists of a liquid and a vacuum on the other end. However, if there is a vacuum, then wouldn't the liquid...

My question relates to the theorem and proof given in Erwin Kreyszig's Advanced engineering mathematics: Theorem 1 is as follows: My question is as follows: In the proof of Theorem 2, what is the justification for concluding $a_{m+1}$ = $b_{m+1}$, given that $a_{m+1}$ = $b_{m+1}$ only holds whe...

The "sequential" game A number of people stand in a line with their hands hidden in a pre-chosen state of either Rock ✊, Paper ✋ or Scissors ✌️. Here's an example line: Initial Line ✌️ ✋ ✊ ✋ ✊ ✌️ ✌️ ✊ ✌️ ✋ ✊ The game goes like this: at each turn, the leftmost player "challenges" the nex...

Let $P(x)$ be a third-degree polynomial with coefficients as natural numbers, and the constant term of $P(x)$ is $1$, and the sum of the coefficients of $P(x)$ is $2020$. Prove that there exist positive integers $a$ such that $(P(a))^2$ and $P(a)$ have different units digits when written in the d...

I am seeking assistance in creating a contour plot that displays both positive and negative contour values. I want the contour lines with positive values to be colored red, and those with negative values to be blue, as illustrated in the provided figure. Furthermore, I have utilized the code pro...

I'm currently reading the proof of Geroch's conjecture in Lawson-Michelsohn's Spin Geometry book and in the proof of Proposition IV.5.8 that every Ricci-flat enlargeable manifold is flat the following situation arises: We have the Riemannian product $\mathbb{R}^n\times Y$, where $Y$ is a simply c...