- xkcd: Existence Proof. RSS Feed - Atom Feed - Email. Comics I enjoy: Three Word Phrase , SMBC , Dinosaur Comics , Oglaf (nsfw), A Softer World , Buttersafe , Perry Bible Fellowship , Questionable Content , Buttercup Festival , Homestuck , Junior Scientist Power Hour. Other things: Tips on technology and government
- In mathematics, an existence proof is a proof that only shows that an object with a specific property exists, but does not tell what this object is. For instance, if f is a continuous function such that f (0) = 0 and f (100) = 2, it is easy to prove that there exists an x between 0 and 100 such that f (x) = 1 (as in the comic)
- According to https://en.wikipedia.org/wiki/Constructive_proof existence proof means a non-constructive proof. Such proofs are annoying to some mathematicians as they claim existence of something but do not show how to find it. So I fully understand the teacher that she wants to grab a sword and finally find it

Explanation. Miss Lenhart is teaching a math class. She begins a proof when one of her students ( Cueball) interrupts her asking if this is one of those dark-magic (unclear, incomprehensible) proofs. She claims no, but in a matter of seconds Cueball is calling out that he was right * Retrieved from https://www*.explainxkcd.com/wiki/index.php?title=Existence_Proof&oldid=14207 Direct image link: Existence Proof. Extra junk: Real analysis is way realer than I expected. Don't get it? explain xkcd. For the good of mobile users! Sincerely, xkcd_bot. < xkcd.com is best viewed with Netscape Navigator 4.0 or below on a Pentium 3±1 emulated in Javascript on an Apple IIGS. at a screen resolution of 1024x1. Please enable your ad blockers, disable high-heat drying, and remove your device. from Airplane Mode and set it to Boat Mode

** Explain xkcd: It's 'cause you're dumb**. Title text: Proof of Zermelo's well-ordering theorem given the Axiom of Choice: 1: Take S to be any set. 2: When I reach step three, if S hasn't managed to find a well-ordering relation for itself, I'll feed it into this wood chipper. 3: Hey, look, S is well-ordered XKCD #1626. Asimov's third law of robotics is that a robot must protect its own existence. Nuclear blasts trigger EMPs that destroy electronics, so a sentient AI that abides by Asimov's laws may seek to destroy our nuclear weapons, rather than use them against us

TIL While becoming a U.S. citizen, Kurt Gödel confided in his friend Albert Einstein that he had found an inconsistency in the U.S. Constitution that would allow the U.S. to become a dictatorship, causing Einstein to worry that Gödel's unpredictability would lead to his application being denied xkcd.com is best viewed with Netscape Navigator 4.0 or below on a Pentium 3±1 emulated in Javascript on an Apple IIGS at a screen resolution of 1024x1. Please enable your ad blockers, disable high-heat drying, and remove your device from Airplane Mode and set it to Boat Mode. For security reasons, please leave caps lock on while browsing

- Re: Existence Proof -- xkcd gets one really really right. Post by sparks » Thu Jun 29, 2017 2:51 am Unless she's got red hair, legs that won't quit, and is fresh and young just out of college
- Create your own XKCD-style comics using HTML markup. A browser-based visual editor included
- XKCD is a wonderful thrice-weekly webcomic of romance, sarcasm, math, and language written by Randall Munroe. Listed below are some of my favorite xkcd dealing with mathematics and/or cryptography. And if you have trouble understanding any of them, there's even a websit
- I do wish we could re-tool the way we teach proof and focus on the entire process of mathematical discovery, starting with experimentation, observation and conjecture -- then testing conjectures -- then drafting a proof that makes intuitive logical sense (and stressing the importance of intuitive sense). Not all proofs can be learned or written this way, perhaps, but it seems like we've gotten.
- g there is no maximal element and using transfinite induction and the assumptions of the situation to get a contradiction. Zorn's lemma tidies up the conditions a situation needs to satisfy in order for such an argument to work and enables mathematicians to not have to repeat the transfinite induction.

xkcd: Existence Proof https://xkcd.com/1856/ 補足 大学の授業で、数学の存在証明を行っていると思いきや、ロード・オブ・ザ・リング的な冒険活劇が始まってしまう、変なクラス。 XKCD作者が書いた本 XKCDの作者、ランドール マンロー氏の著作本『ホワット・イフ？：野球のボールを光速で投げたらどうなるか』を紹介します Often a proof will end up referring to something, like therefore it is equal to 3, where it was actually last referred to about 10 lines and 5 sentences ago. This could be avoided by giving it a name. It doesn't help to be more specific about it by saying that object that I was talking about ten lines above

* First, let's get a few things out of the way: In real life, we can't put a metal pole between the Earth and the Moon*.[1]For one, someone at NASA would probably yell at us. The end of the pole near the Moon would be pulled toward the Moon by the Moon's gravity, and the rest of it would be pulled back. This proof is definitely wrong. (take ( )to be is a prime number) Suppose we know ∃ . Can we conclude ∀ ? wasn't arbitrary. We knew something about it -it's the that exists to make true

The phrase correlation does not imply causation refers to the inability to legitimately deduce a cause-and-effect relationship between two events or variables solely on the basis of an observed association or correlation between them. The idea that correlation implies causation is an example of a questionable-cause logical fallacy, in which two events occurring together are taken to have. ** The proof of this principle was first given by 12th-century French philosopher William of Soissons**. Due to the principle of explosion, the existence of a contradiction (inconsistency) in a formal axiomatic system is disastrous; since any statement can be proven, it trivializes the concepts of truth and falsity

- Also, it can flash between blue and off within the time period of the proof to satisfy 1-3) and render 4) false. Any proof here must define for itself, an instantaneous time period. Such an impossible period is identical to nothing and cannot be defined otherwise it would be something. There can never be a proof of the principle of explosion.
- Carcinisation (or carcinization) is an example of convergent evolution in which a crustacean evolves into a crab-like form from a non-crab-like form.The term was introduced into evolutionary biology by L. A. Borradaile, who described it as one of the many attempts of Nature to evolve a crab. Most carcinised crustaceans belong to the order Anomur
- It's been argued that the secret of lasting love is giving up the myth of the one — and yet the notion of a perfect soul mate is irresistibly alluring to most of us. We go after it with remarkable ambition and even try to calculate the odds of finding that special someone, that invaluable human mirror who will tear apart your ego a little bit, show you your obstacles and.
- Simply put: cool physics and other sweet science. If you can't explain it simply, you don't understand it well enough. ~Rutherford via Einstein? (wikiquote) Created by Henry Reic

- xkcd 1856: Existence Proof : xkcd
- xkcd: Proof
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