These photos are from the photo book "Genesis". The area I am curious about is in the dunes. I was having a tough time even coming up with adjectives to describe this photo. It almost looks like a painting to me. The dunes have this "brushed" quality to them. I am curious if it is due to the gr...

Can courts nullify/strike down rules of the legislature if they violate fundamental rights? In the U.S., the courts have a final say on whether a statutory provision is constitutional, and if it is not, then it is immediately ineffectual, with immediate (non-) effect. In the UK, the fundamental p...

Historically, Windows used CR/LF and backslash, first for new lines, second for path separator. But it turns out that it supports forward slashes as well: Note that Windows supports either the forward slash (which is returned by the AltDirectorySeparatorChar field) or the backslash (which is ret...

Rules of Nurikabe: Shade some cells in the grid. Each area of unshaded cells must contain exactly one number, which indicates the size of that area. Two unshaded areas may not share an edge, but they can touch at a corner. Shaded cells must form one orthogonally connected area, and no 2x2 square ...

I recently came across this post by Valter Moretti concerning the utility of von Neumann algebras in mathematical physics. In it, he mentions The closure of von Neumann algebras with respect to the strong operator topology is the feature that makes them more interesting than simple $C^*$-algebra...

I am German, my wife is British. Normally I could go on a holiday to Spain for any amount of time, and my wife could go for up to three months. Would it be possible for my wife to stay more than three months (most likely less than six) together with me? Would she need to apply for a visitor visa,...

I found this item on the beach today in north west England. It’s very light weight and delicate, about 3cm long and some interesting patterns on it. Any ideas on what it is would be greatly appreciated

I have two quantum circuits that I'd like to display side by side using the quantikz package in LaTeX. Here's the code for the two circuits: \begin{quantikz} & \ctrl{1} & \\ & \targ{} & \end{quantikz} $\equiv$ \begin{quantikz} & \qw & \ctrl{1} & \qw & \qw \\ & \gate{H} & \gate{Z} &...

A sentence describing a troll from Harry Potter: 背が四メーテルもあり、墓石のような鈍い灰色の肌、岩石のようにゴツゴツのずんぐりした巨体、ハゲた頭は小さく、ココナッツがちょこんと載っているようだ。(Japanese TL) Twelve feet tall, its skin was a dull, granite grey, its great lumpy body like a boulder with its small bald head perched on top like a coconut. (Original Engli...

After watching this video I decided to simulate the following circuit in PSpice: Time domain simulation with general settings, TSTOP of 100 ms and maximum step size of 1 μs yielded the following sine and Fourier graphs: By rearranging the formula: $$f=1/2\pi\sqrt{LC}$$ we get: $$LC=(1/2\pi f)^...

I learned much of my English vocabulary watching Hollywood movies. I learned much of my English vocabulary from watching Hollywood movies. I learned much of my English vocabulary by watching Hollywood movies. Are these correct and if so, do they mean the same thing?

I'm running Debian Linux and long story short I had an SSD failure. I have successfully recovered parts of my user folder, like the .config and .local directory. I installed a new system on a fresh drive. I copied over my .config/chromium directory to the new user, but whenever I start chromium i...

So I entered Argentina by plane a month ago, passed the entry immigration checks at the airport, and then some days later took a bus to Chile. The bus went through the Los Libertadores pass, where I passed the Chilean entry immigration procedures and got the PDI paper. However, I do not remember ...

On April 2 2022 I asked for estimates of expected results. How much larger will the "observable by us" universe be when JWST becomes operational?. As of Jan 27 2024 with JWST operational for about 18 months how much larger (percent) is the observable sphere? I would not consider CMB to be the pri...

I recently acquired a copy of Mozart's Rondo alla Turca and am a bit baffled by one of the fingerings annotated: On measure 47, it marks 3-1-4 for C#, E, A. Is there a reason for this fingering? Or might it be a typo? To make the fingering work as-written, you'd need to cross your hand twice, an...

I need to Compile functions for use on parallel kernels. There are many such functions, so compiling in parallel is desirable. When compiling functions with CompilationTarget -> "C", the compilation fails with multiple errors related to CLangFormat. Is there a way to compile these functions witho...

In our book we use for our classes, we often require cardinals to be uncountable regular cardinals (when proving stuff with cofinality/stationarity...). We often use that by creating some sort of sequence of length $\omega$ inside of an uncountable regular cardinal $\kappa$ and then saying that t...

I have a trouble with many so-called 'fallacies' and 'No True Scotsman' is a no exception... Let me quote a famous line from The Game of Thrones: Any man who must say "I am the King" is no true King. Did Lord Tywin commit the 'No True Scotsman' fallacy here? Or another quote, less famous: Knig...

I have successfully set the pivot point to the 3D cursor. However, when I export the OBJ file and then re-import it, the pivot point is not stabilized. This also happens when I press Ctrl + A and apply all transforms. How can I fix this problem?

I would like a command that removes diacritics. I can write such a function in Python: import unicodedata def dediacritic(word): result = u"".join([unicodedata.normalize("NFD", x)[0] for x in word]) return result print("Ἰακώβ", dediacritic("Ἰακώβ")) This seems to work well: $ dediacrit...

So I have this dragon thingy named Kebera in my vampire-demon(?)-dragon world, that Zerk/'Gutsy' and Tincan 1000/TK-1000/TK, a human and small robot respectfully, ride upon. Kebera can of coarse walk and run, pretty fast I should note, but also can fly given it is a dragony thing, and also swim p...

In the datasheet of the IRF540 power MOSFET there are two different statements about the input gate resistance. At the end of page one, it says that with VDD = 25 V and TJ = 25 °C, the input gate resistance equals Rg = 25 Ω. Then, on page two, it says: Gate input resistance Rg = 0.5 - 3.6 Ω at 1...

looking to add a 60 amp breaker like this one to my main service disconnect so I can install an electric car charger right next to it. My panel for the rest of the house is a lot farther away and in the basement so this would save a lot of money. I found some similar questions like this one and l...

Traveling with my family this week, and my wife is a stickler for the rules. The TSA Travel Checklist website says you must follow the 3-1-1 liquids rule: 3.4 ounces or less per container 1 quart size, clear, plastic, zip top bag (all liquids must fit in bag) 1 bag per passenger When I trave...

I am teaching introductory calculus, physics and programming to engineering students at a local college. Yesterday, at the end of a long day which involved a lot of programming, I ended up making a bad joke. Maybe I was simply tired after the long day, but I had one of those moments, which we all...

If I'd like to select two symmetrical vertical edges in a sphere it is easy to do that manually: Four would be easy too: But with other divisions it could be harder to do so manually. Is there a simple way to select n edges that are covering the sphere with equal distance between each other?

From Avellaneda's Continuation of Don Quixote, chapter 6, p. 34 (circa 1614, translated by Yardley 1784 apparently after the French of Le Sage 1705 but it all seems very confusing). Don Quixote says: [...] you should see your undaunted master deliver himself up to the most dreadful dangers with ...

I don't know what the circuit is called; I found it in the suggested schematics of a Resolver to Digital Converter IC. The circuit is an amplifier circuit that has two push-pull amplifiers and a bunch of op-amps. The LTspice simulations give out clipped waveforms. How can I fix this? How do I go ...

Upon the king being told there was a secret message for him to be told in silence, why would the translation have the king instead say "Silence!" and the people know to just leave? Wouldn't they have to be told by the king to leave first so that the secret message could be told in privacy? Propos...

I often find myself preparing certain foods that contain viscous ingredients like honey and tahini sauce. For instance, one of my dressings contains both of these, which I currently measure out in a large measuring cup before blending everything together. The first difficulty arises once I have p...

In Matthew 5 it says: And seeing the multitudes, He went up on a mountain, and when He was seated His disciples came to Him. 2 Then He opened His mouth and taught them, saying: 3 “Blessed are the poor in spirit, For theirs is the kingdom of heaven. 4 Blessed are those who mourn, For they shall b...

First time posting here. I'm working on an old house, discarded old baseboards and repainted a few walls. When about to put on new baseboards, I'm finding that my old baseboards were higher than the new ones, and so I'm having this ugly transition from were the edge was on the old base boards vis...

When I go in the Shader Editor, my Principled BSDF is much shorter than all the ones I see in tutorials. This is what it looks like when I do it This is what it looks like in every tutorial I see

Question: I wonder what are the open problems , where computational experiments might me helpful? (Setting some bounds, excluding some cases, shaping some expectations ). Grant program: The context of the question is the following - in some sense there is a way to crowdsource some (quite specific...

I might be asking a very elementary question here. How do we identify where static friction is acting or kinetic friction is acting? For example, Consider this case: Now, here we are talking about "sliding" a body along the ground with the least possible force.. If we are talking about sliding...

This feels like a very natural question, but I am struggling to find a reference. Consider a simple graph $G$, and say two vertices are conjugate if there exists an automorphism of $G$ that switches them. It is not hard to show that if $v,w$ are conjugate than the induced subgraphs on $G\setminus...

I am currently in a game with a GM/DM that is saying that Warlock and Sorcerer Magic Items are subclass specific. That they are not available in stores, they would have to be gifted by the Patron or Otherworldly Power, furthermore that a warlock or sorcerer from a different subclass would not be ...

While adjusting disc brakes, I often find that the caliper body slightly slides sideways when tightening the mounting screws. It is sometimes due to sticky washers, but I also encounter this issue with new out-of-the-box brake parts. Is there a trick to prevent this and ensure the caliper body st...

The children fantasy franchise Mia and Me (2012) revolves around the eponymous girl Mia who can travel to the parallel world of Centopia by means of a magical bracelet and an (ever-changing) passphrase read from a magic book. Centopia is inhabited by creatures like elves and unicorns. Mia makes v...

I have a list {{{1, 1, 1}, {1, 1, 1}}, {{1, 1, 1}, {1, 1, 2}}, {{1, 1, 1}, {1, 2, 1}}, {{1, 1, 1}, {1, 2, 2}}, {{1, 1, 1}, {2, 1, 1}}, {{1, 1, 1}, {2, 1, 2}}, {{1, 1, 1}, {2, 2, 1}}, {{1, 1, 1}, {2, 2, 2}}, {{1, 1, 2}, {1, 1, 1}}, {{1, 1, 2}, {1, 1, 2}}, {{1, 1, 2}, {1, 2, 1}}, {{1, 1, 2}, {1, ...

My question is inspired from this one in ILA 5th edition by Gilbert Strang: If $a_{11}=a_{22}=a_{33}=a_{44}=0$, how many of the 24 possible products $a_{1j}a_{2k}a_{3l}a_{4m}$ are sure to be zero? I found the answer for this case (15) but don't know how to solve in general for any size n. Thanks ...

In 5e there are all sorts of ways to increase damage from weapons, but nearly all of that additional damage is typed separately from the weapon - eg: extra force damage, fire, etc. Other than the Enlarge spell and related effects, what other ways are there to specifically increase the damage of t...

A small roof leak led (over time) to this damage in the corner of a drywall ceiling. Roof has been repaired, but I'm looking for guidance to repair the ceiling. I've done a handful of basic drywall patches before but never on a ceiling. How should I handle: It being in a corner Working overhead ...

I am moving my IKEA PAX storage unit, and I need to remove the doors to lighten the load. How do I unclip these hinges? My google searches seem to show a slightly different hinge than the one I have pictured. They all have a clip you pull up on on the right side of my photo. I don't see that c...

Answers to this question provide convincing evidence that Jesus reportedly read from the Septuagint (Greek) version of Isaiah in Luke 4:18-19, when he began his public ministry in Nazareth. My question is whether Matthew correctly reports Jesus as reading from the Septuagint. Possible scenarios i...

As advised, I am posting a separate question, but I still think it is a better fit for linguistics (because of phonetics and phonology); feel free to migrate to latin SE. Famagusta is supposed to be a corruption of Αμμόχωστος but how did the initial F spawn? To make the question a bit more genera...

how do i determine if the vectorspan $(u_1,u_2)$ is equal to the vector span of $(v_1,v_2)$ in $\Bbb R^6$, in other words how do i show that $\operatorname{span}(u_1,u_2) = \operatorname{span}(v_1,v_2)$: $$u_1=(1,0,1,0,1,0) \ , \ u_2=(0,1,1,1,1,-1) \ , \ v_1=(4,-5,-1,-5,-1,5) \ ,\ \\ v_2=(-3,2,...

A watershed in Syria’s reintegration into the Arab world’s diplomatic fold came earlier this year when Saudi Arabia began moving towards reconciliation with Damascus. Both the February 6 earthquakes and the March 10 Saudi-Iranian diplomatic deal accelerated Riyadh’s movement towards renormalisat...

I do think that some people behave in evil ways and this is sometimes habitual and involves evil intent. Does that mean there are evil people or do you need to believe in e.g. an evil character (which I am less sure of) or motivations (which I am more sympathetic to but might think is unhelpful) ...

According to Halacha, certain forms of Melacha are permissible on Yom Tov for needs of the holiday, notably cooking and carrying. My question is, if someone lives outside a kosher Eruv and they’re disabled/blind, can they move a guide animal outside as Ochel nefesh to go to synagogue on Yom Tov?

I have a lis {{{-12,2,-1},{-11,1,-5},{-10,-2,3},10 x+6 y+z+109==0},{{-12,2,-1},{-11,1,-5},{-10,6,3},2 x-2 y+z+29==0},{{-12,2,-1},{-11,1,-5},{-9,5,-7},3 x-y+z+39==0}} I would like to conver lis to text file has the form \documentclass[12pt,a4paper]{article} \usepackage{enumitem} \usepackage[left=...

My mother's math department struggled to solve this problem; apparently only one teacher did. I was surprised as I thought it was trivial. Source: my mother's telegram message

Mr. and Mrs. Dursley, of number four Privet Drive, were proud to say that they were perfectly normal, thank you very much Has JK Rowling ever explained why she chose the address 4 Privet Drive? I am curious both as to the street and the number.

In the early to mid 90's I recall reading a book where a computer scientist is asked to create a virtual reality for life to exist after death, using the idle cycles of networked computers from around the world. At the same time, a separate 'simulation' with all the building blocks of life to cre...

First, I'm assuming without asking that I can generate a blob of charged particles like the Sun's solar flares plasma. My thought was more directly related to HOW to shoot it? Isn't the real thing twisted out by the sun's wild magnetic fields? Can an electromagnetic railgun be configured to produ...

In a water-world where the only "land" are the floating, rotting corpses of titans, how would a medieval civilization develop agriculture? Since they are of medieval technology level, hydroponics seems like an unlikely solution. This water-world also has a range of seabed depths, meaning there ar...

I know the chords to a song on guitar is there any way I can play that song on the clarinet based on those chords?

I need to remove the lights from the walgreens humidifier that I have so that I can sleep in complete darkness. However, I’m not an electrical engineer and not all that familiar with wires and circuit boards. I’m attaching the pictures below. Can you please tell me if I’m able to remove the wires...

In the case of a ring or necklace, we divide all possible outcomes by 2. Why not in the Round table case for instance, if we have $5$ distinct key rings on a table, all we have to do is $\frac{(5-1)!}{2}$ then why we can't divide by $2$ in the case of a round table like if we have $5$ people to a...

I can't distinguish the meanings of gerunds. Eating (gerund) (=the action of eating) Eating slowly (gerund) (=the action of eating slowly) Do they refer to the same activity? (That is, is eating slowly eating?) Or eating and eating slowly refer to two different activities? I think eating and eati...

In the United States, medical professionals are not allowed to participate in executions of prisoners. Are they allowed to give palliative care to the prisoners during the process, if the care given serves only to reduce the prisoner's suffering and does not in any way hasten their death?

I just came across a New York Times article talking about a newly found Low Surface Brightness (LSB) galaxy (also called “ultra-diffuse galaxies” or “dark galaxies”). The new galaxy, J0613+52, was accidentally discovered using the Green Bank Observatory. To be sure, I verified the story via a Spa...

I regularly use the cancel package to cancel out terms in mathematical expressions, but sometimes those terms contain underbraces. Take the following (contrived) example: \[abc + \cancel{d \underbrace{(e - e)}_{0} f}\] Here, I cancel out the term $d(e - e)f$, and the underbrace emphasizes that ...

I'm looking for advice on the best way to fill a gap (about 1/2 inch wide) between the drywall and the window frame before re-sealing it with caulk. I've read that you can use a backer rod, or fill it with joint compound, or use insulating foam (specifically designed for windows) like the one fou...

In Ryuu ga Gotoku 8 (aka Like a Dragon Infinite Wealth), when asked about getting with a younger lady, a character says the line "[彼女｛かのじょ｝]下手｛へた｝すりゃふた回｛まわ｝りも年下｛としした｝だぞ" ("at worst, [she] could be like two dozen years younger than me"). I've never heard this 回り counter for 12-year periods, and I ...

I realize that this website is mainly for top-level mathematicians and I sincerely apologize if this question is in the wrong place, but I would really appreciate it if someone could give me suggestions. I am a 10th grader and I'm very interested in mathematics. As of now, I'm into math contests ...

My tutor said that only I,G, X-M in AD can include a multiplier and that consumption does not create a multiplier effect. I understand that these factors affect my ability to consume and that one of these factors changing will affect my income and affect my MPC and create a multiplier. But, what ...

I'm desperate. I vaguely remember the beginning. The female lead (villainess?) kills or framed by her fiancé because she is a witch. I think there is war or power struggle happening with the kingdom? As punishment, they exiled her and removed her arms and leg. She lived in a tent being taken care...

I was thinking about writing an alternative future scenario where, after an intense period of American decline on the world stage, a new political ideology takes root in the United States called the "Second Manifest Destiny" which promotes uniting the entire North American continent into one supe...

What are a priori advantages of Lasso regularization for linear regression models, over many other heuristically-justifiable methods that both regularize the problem and perform variable selection? For instance, what would be advantages of Lasso over simply performing ridge regression and then dr...

Assume an rsync --recursive --ignore-existing foo bar copy command was being run for a large directory tree named foo, but that that command got prematurely interrupted. For example, because of a sudden power failure on the target machine. Running the above command again can save a lot of time fo...

This is my first question. I’m not trying to rock the boat. I believe what the New Covenant says about God’s name. The New Covenant says there is ONE NAME. The New Covenant doesn’t say there are two, or three, or four, or 10 names it says there is ONE NAME. Colossians 2:9 settles this is for me. ...

This morning I received a notification that after visiting some adult websites, 27 viruses have infected my phone (iPhone XR with iOS 17.3), that they would destroy my SIM card and delete my contacts. (I assume to most people that would be laughable). To handle this threat I should install an app...

I'm trying to make sense of what a system curve is, and I have three different conceptions in mind. Note: I don't have an engineering background, and these are relatively new concepts to me, so I may be botching some of the ideas and terminology. I'm also purposely avoiding discussion of a pump o...

Is it appropriate to employ a zero-inflated Poisson regression model for datasets characterized by a notable presence of zeros, even when these zeros are true zeros?

I have an old LCD monitor by Dell. Its model number is 2407WFPHC and its resolution is 1920 x 1200. I attach it to my modern Surface Laptop 5 whose resolution is 2256 x 1504. In the System Settings -> Display window, when I select the "Extend these displays" option, I see fullscreen windows on bo...

I recently started studying 3d and I had such an artifact in cycles on the reflection of a mirror surface. Maybe someone knows how to fix it? Or how to improve the render settings?

I have an I2C sensor connected to a microcontroller. The whole system is battery powered, so I need to find ways to switch off power from devices when they are not in use. For the sensor, I am thinking of using an IO Expander or something similar to disconnect the sensor from Vcc. But what to do ...

Currently, the process of selecting reviewers for journal papers is based on take-it-or-leave-it offers: the journal editor invites me to review a particular paper, and I can either accept or decline. Often, I get papers that are quite far from my current interests, so I either decline, or accept...

I'm submitting a paper to a conference. The conference encourages also submitting code for reproducibility. My paper builds upon a previous paper, which had a corresponding R package. Therefore, for this paper I've been updating this R package with the various modifications that the new paper pre...

In each orange tetromino, place a light that shines in all directions horizontally and vertically. Light shines through tetrominoes. Tetromino tiles are considered unlit initially and may be lit. Black spaces are walls and block light. The resulting dark squares (including black walls) will form ...

When a wheel is built with j-bend spokes, they are typically "interlaced", as the picture from ParkTool shows (crossing #3): There are clear technical advantages of doing so, described in Jobst Brandt's "The Bicycle Wheel" and asked here previously. But I have never seen straightpull spokes bein...

I saw a painting from a thrift shop, and am curious to know who the artist is. Here is the seal:

I've just installed lubuntu, and the only way to use internet is via ethernet. after: "sudo service network-manager restart", i get "unit network-manager.service not found". iwconfig gives no wireless extensions. sudo apt install firmare-iwlwifi network-manager gives: reading package lists...done...

Yesterday I(newbie on linux) port forwarded the port 42420 to play Vintage Story with some friends. After enabling it on the router and telling firewall-cmd what port to allow, we played without any issues. But today - after a shutdown over night, I find that the machine boots up a lot slower tha...

in the Michelson-Morley experiment, why didn't they assumed or concluded that ether is homogeneous and permeate all of space instead of coming from an unspecified source or direction dubbed the ether wind? I mean the signals detected in the interferometer is always cancelled out regardless the re...

Let □P. Suppose □P => Q. What can be said about the modality of Q? □P <=> P holds in every possible world. Thus it is available as a premise to derive Q in every possible world. Suppose Q is derived via axiom-based term substitution (proof), then since axioms are utilized, and they are assumed as...

Sliceforms are models made from intersecting sets of planes which slot together to generate intersecting three-dimensional surfaces. Here are some of them made by Nadja Vohradsky for the university of oxford mathematics-online-exhibition 2020 Sliceforms sit happily on the border between art and ...

I'm coming from a math background with no prior knowledge in physics or engineering and currently teaching myself signals processing. Upon learning the definition of a Hilbert transform for a real signal $s(t)$ I find it difficult to determine exactly what the Hilbert transform is doing. The sour...

I recently noticed a strange issue regarding C++23 Deducing this feature. Suppose we have a struct S with a simple conversion operator: struct S { operator int() { return 42; } }; int i = S{}; Since 42 is of type int, we can specify the return type of the conversion operator as auto, for exam...

I am using a hurdle model (binomial logit for the zero counts, truncated Poisson for the positive counts) to study the effects of demographic (and other) variables on the adoption of private air-quality sensors. I want to model adoption rates, therefore I use population as an offset. My unit of o...

Given two nonempty closed sets $C$ and $D$, the set $C-D$ is defined by $$ C-D=\{x-y|x \in C, y \in D\}. $$ Is the set $C-D$ closed? Here is my proof: Take $\{x_i\} \subseteq C$ satisfy $x_i \to x$, and $\{y_i\} \subseteq D$ satisfy $y_i \to y$, then we have $z_i=x_i-y_i \in C-D$ and $z_i \to x-y...

I was thinking of a hypothetical distribution where the mean(first cumulant) is non-zero, second cumulant(variance) is zero, and the third cumulant(skewness) is non-zero. The higher order cumulants are all zero. Can this distribution exist? Can the distribution have non-zero skewness if the varia...

I am trying to draw an Integral where the parameter of the integral is to the left of the integral sign as it is here: However, I have found nothing online for how to achieve this. Is there a (preferably easy) way to set the Integration parameter to the left of the symbol?

For a given integer m, there are at most two points in the secp256k1 curve whose x-value is m. Have we ever actually found a pair of distinct private keys whose corresponding public keys have the same x-value?

https://en.wikipedia.org/wiki/Compulsory_voting [![enter image description here][1]][1] Source: https://en.wikipedia.org/wiki/Compulsory_voting#/media/File:Compulsory_voting.svg What does North Korea have to gain from making voting compulsory? North Korea doesn't have a democracy, and yet, it pra...

I am puzzled about the designation of "regional airline". So far, I noted that most airlines designated as regional are part of a "main" airline and display a spin-off brand from the main airline identity. Some examples: HOP! (Air France) Lufthansa Regional Jazz (Air Canada) The only difference...

The following is from a scholarly book describing old Jerusalem in the context of the modern geo-political world. The bolded part stands out for me. 市街は、古い巨大な城壁にかこまれています。城壁は[方千]{ほうせん}メートルたらず。 市街の家々は大部分が白っぽい石づくりの、窓の小さい、暗い建物で、そのあいだをせまい石だたみのみちが、迷路のように走っています。(furigana is my addition, not in the ori...

Batman and James Gordon went to the spot where Pete Savage was killed. Gordon was looking at the photos, while Batman was checking out the rat maze: Batman: More symbols. It's another cipher. James Gordon: He blasted these out after his message went viral. Bastard murders you and your reputation...

The following is an simple example, as you can see the code go beyond the page, how could I make it sits within the linewidth with pre-determined margin of the document? Thank you. \documentclass{article} \usepackage{minted} \begin{document} \begin{minted}{python} import numpy as np def incm...

I found this coat of arms on old piano notes. What is this coat of arms?

im asked to find the number of arithmetic sequences of d=1 (or consecutive sequences the way the question describes it), of length of at least 2 from the numbers {1,2,...,n}. the question adds that it needs to be done by proving via bijection that this number is equal to the cardinality of a cert...

And similarly, would it be {membership_end_date|crmDate} or {{membership_end_date}|crmDate}?

The story revolves around a U.S. diplomat. At this future date, the world has two superpowers, the USA and Communist China. There is a dispute about how best to colonize Mars. The United States wants to terraform Mars. The Chinese want to genetically alter humans (explicitly referred to as “p...

In Geometric Nodes, I wanted to build concentic cylinders that never stop growing, over 1,800 images. I succeeded, but the setup is very cumbersome. For each cylinder, you need about ten nodes. For the final fifty cylinders, you end up with a toal of more than 500 nodes. I'm sure there are ways o...

I bought a small inverter generator, filled it with SAE10-30 oil that shipped with it, taking care to check with the dipstick several times so as not to overfill it (though it did take the full bottle), and then ran it for 5 hours, varying the load, per the manual's instructions. The jar in the p...