Mathologer
Mathologer
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Conway's IRIS and the windscreen wiper theorem
Conway's whatever ... it's named after John Conway and so it must be good :)
Wiki page dedicated to John Conway
en.wikipedia.org/wiki/John_Horton_Conway
Wiki page Conway's circle
en.wikipedia.org/wiki/Conway_circle_theorem
Wiki page on his Game of Life
en.wikipedia.org/wiki/Conway%27s_Game_of_Life
Michael de Villiers (the connection with the windscreen wiper theorem, read this one first)
dynamicmathematicslearning.com/conway-circle-theorem-special-case-side-divider-theorem.pdf
dynamicmathematicslearning.com/conway-circle-as-special-side-divider-theorem.html
Also check out Michael's main page dynamicmathematicslearning.com/homepage4.html
Matt Baker's tribute blog to John Conway
mattbaker.blog/2020/04/15/some-mathematical-gems-from-john-conway/#more-4162
Tanya Khovanova's blog post on Conway's circle showing Conway's wearing a Conway circled Mathcamp t-shirt
blog.tanyakhovanova.com/2010/06/conways-circle/
Colin Beveridge's proof without words
aperiodical.com/2020/05/the-big-lock-down-math-off-match-14/
Colin Beveridge and Elizabeth A Wilson (his proof without words explained :)
aperiodical.com/2020/06/conways-circle-theorem-a-proof-this-time-with-words/
Paul Farrel's beautiful animated proof
czcams.com/video/MvLBeOIPZ08/video.html
Me on Conway's circle and Conway's pinwheel tiling for the Gathering of Gardner
czcams.com/video/VrXnwmyxylg/video.html
Card Colm on Conway and his circle
www.cardcolm.org/JHC.html
cardcolm.org/Pics/RybaConwayCircle.pdf
Eric Braude
Conways Circle Theorem: A Short Proof Enabling Generalization to Polygons
arxiv.org/abs/2111.01835
Mathologer video on curves of constant width
New Reuleaux Triangle Magic
czcams.com/video/-eQaF6OmWKw/video.html
Mathologer videos on Conway's proof of Morley's miracle
Math is Illuminati confirmed
czcams.com/video/DfnBW6HvNwM/video.html
Part 2
czcams.com/video/gjhmh3yWiTI/video.html
Music: Rain by ANBR and Ethereal Ottom
T-shirt: ages old, don't remember where I got this one from
Enjoy!
Burkard
zhlédnutí: 73 102

Video

Simple yet 5000 years missed ?
zhlédnutí 200KPřed 2 měsíci
Good news! You really can still discover new beautiful maths without being a PhD mathematician. Stumbled across this one while working on the magic squares video. Another curious discovery by recreational mathematician Lee Sallows. A simple and beautiful and curious fact about triangles that, it appears, was first discovered only 10 years ago. Really quite amazing that this one got overlooked, ...
What's the curse of the Schwarz lantern?
zhlédnutí 167KPřed 4 měsíci
Second coop with Andrew. This time it's about the Schwarz lantern a very famous counterexample to something that mathematicians believed to be obviously true. A 3D cousin of the famous pi = 4 paradox. 00:00 Intro 00:39 Troll math: the pi=4 meme 02:25 Archimedes chops off corners 05:51 Archimedes boxing of pi 07:40 Schwarz lantern 16:59 Area formula 17:12 Schwarz pi = 4 memes 20:17 Folding flat ...
Why are the formulas for the sphere so weird? (major upgrade of Archimedes' greatest discoveries)
zhlédnutí 204KPřed 5 měsíci
In today’s video we’ll make a little bit of mathematical history. I'll tell you about a major upgrade of one of Archimedes' greatest discoveries about the good old sphere that so far only a handful of mathematicians know about. 00:00 Intro to the baggage carousel 01:04 Archimedes baggage carousel 04:26 Inside-out animations 04:59 Inside-out discussion 10:38 Inside-out paraboloid 12:43 Ratio 3:2...
Is this a paradox? (the best way of resolving the painter paradox)
zhlédnutí 108KPřed 6 měsíci
The painter's paradox, a.k.a. Gabriel's horn paradox a.k.a. Torricelli's horn paradox has been done to death on CZcams. So why do it again? Well, being all about some remarkable features of 1/x, this topic nicely complements the previous two videos that were also dedicated to 1/x. Now the first Mathologer trilogy is complete! Also, I thought of a couple of nice twists to make this treatment of ...
The best A - A ≠ 0 paradox
zhlédnutí 386KPřed 8 měsíci
This video is about a new stunning visual resolution of a very pretty and important paradox that I stumbled across while I was preparing the last video on logarithms. 00:00 Intro 00:56 Paradox 03:52 Visual sum = ln(2) 07:58 Pi 11:00 Gelfond's number 14:22 Pi exactly 17:35 Riemann's rearrangement theorem 22:40 Thanks! Riemann rearrangement theorem. en.wikipedia.org/wiki/Riemann_series_theorem Th...
Why don't they teach simple visual logarithms (and hyperbolic trig)?
zhlédnutí 347KPřed 9 měsíci
Simple visual logarithms. Is there such a thing? You bet :) 00:00 Intro 01:59 Rubik's cube and drill 03:26 What's the area? 05:15 Sum of 1 1/2 1/3 ... 06:35 Mystery sum 11:32 What base? 17:25 What is Log_b(x)? 22:14 Is this a circle? 28:53 Proof that e^a = cosh(a) sinh(a) 30:50 Thanks Maths of spinning cubes by Lingguo Bu tinyurl.com/yvp5udm6 Great history of hyperbolic functions by Janet Heine...
Ramanujan's easiest hard infinity monster (Mathologer Masterclass)
zhlédnutí 158KPřed 10 měsíci
In this masterclass video we'll dive into the mind of the mathematical genius Srinivasa Ramanujan. The focus will be on rediscovering one of his most beautiful identities. 00:00 Intro 02:48 How did his mind work? 09:12 What IS this? 15:11 Fantastic fraction 18:12 Impossible identity 23:38 Thanks! This video was inspired by two 2020 blog posts by John Baez: math.ucr.edu/home/baez/ramanujan/ Here...
Powell’s Pi Paradox: the genius 14th century Indian solution
zhlédnutí 493KPřed rokem
Around 1400 there lived an Indian astronomer and mathematician by the name of Madhava of Saṅgamagrāma. He was the greatest mathematician of his time and, among other mathematical feats, he and his followers managed to discover a lot of calculus 200 years before Newton and Leibniz did their thing. While preparing a video about this Indian calculus it occurred to me that some of Madhava's discov...
The Korean king's magic square: a brilliant algorithm in a k-drama (plus geomagic squares)
zhlédnutí 127KPřed rokem
A double feature on magic squares featuring Bachet's algorithm embedded in the Korean historical drama series Tree with deep roots and the Lee Sallow's geomagic squares. 00:00 Intro 02:52 Part 1: The king's magic squares 09:40 Proof 18:22 The order 5 and 7 magic squares 19:17 Part 2: Geometric magic square 30:59 Thanks! The Korean historical drama Tree with deep roots is available here www.viki...
What's hiding beneath? Animating a mathemagical gem
zhlédnutí 146KPřed rokem
There is a lot more to the pretty equation 10² 11² 12² = 13² 14² than meets the eye. Let me show you. 00:00 Intro 00:07 Animated visual proofs 03:35 Mathologer materializes 06:31 Three puzzles 07:45 Thanks! Notes: The beautiful visual proof for the squares pattern is based on a note by Michael Boardman in Mathematics Magazine: tinyurl.com/2d4y7wtf As far as I can tell, I am the first one to not...
Fibonacci = Pythagoras: Help save a beautiful discovery from oblivion
zhlédnutí 242KPřed rokem
In 2007 a simple beautiful connection Pythagorean triples and the Fibonacci sequence was discovered. This video is about popularising this connection which previously went largely unnoticed. 00:00 Intro 07:07 Pythagorean triple tree 13:44 Pythagoras's other tree 16:02 Feuerbach miracle 24:28 Life lesson 26:10 The families of Plato, Fermat and Pythagoras 30:45 Euclid's Elements and some proofs 3...
Pythagoras twisted squares: Why did they not teach you any of this in school?
zhlédnutí 455KPřed rokem
A video on the iconic twisted squares diagram that many math(s) lovers have been familiar with since primary school. Surprisingly, there is a LOT more to this diagram than even expert mathematicians are aware of. And lots of this LOT is really really beautiful and important. A couple of things covered in this video include: Fermat's four squares theorem, Pythagoras for 60- and 120-degree triang...
Secrets of the lost number walls
zhlédnutí 163KPřed rokem
This video is about number walls a very beautiful corner of mathematics that hardly anybody seems to be aware of. Time for a thorough Mathologerization :) Overall a very natural follow-on to the very popular video on difference tables from a couple of months ago ("Why don't they teach Newton's calculus of 'What comes next?'") 00:00 Intro 01:02 Chapter 1: What's in a wall 03:35 Chapter 2: Number...
Why is calculus so ... EASY ?
zhlédnutí 1,5MPřed rokem
Calculus made easy, the Mathologer way :) 00:00 Intro 00:49 Calculus made easy. Silvanus P. Thompson comes alive 03:12 Part 1: Car calculus 12:05 Part 2: Differential calculus, elementary functions 19:08 Part 3: Integral calculus 27:21 Part 4: Leibniz magic notation 30:02 Animations: product rule 31:43 quotient rule 32:18 powers of x 33:10 sum rule 33:52 chain rule 34:54 exponential functions 3...
Heron’s formula: What is the hidden meaning of 1 + 2 + 3 = 1 x 2 x 3 ?
zhlédnutí 503KPřed 2 lety
Heron’s formula: What is the hidden meaning of 1 2 3 = 1 x 2 x 3 ?
Reinventing the magic log wheel: How was this missed for 400 years?
zhlédnutí 369KPřed 2 lety
Reinventing the magic log wheel: How was this missed for 400 years?
Tesla’s 3-6-9 and Vortex Math: Is this really the key to the universe?
zhlédnutí 3,9MPřed 2 lety
Tesla’s 3-6-9 and Vortex Math: Is this really the key to the universe?
How did Fibonacci beat the Solitaire army?
zhlédnutí 172KPřed 2 lety
How did Fibonacci beat the Solitaire army?
The 3-4-7 miracle. Why is this one not super famous?
zhlédnutí 581KPřed 2 lety
The 3-4-7 miracle. Why is this one not super famous?
Do you understand this viral very good math movie clip? (Nathan solves math problem X+Y)
zhlédnutí 692KPřed 2 lety
Do you understand this viral very good math movie clip? (Nathan solves math problem X Y)
Why don't they teach Newton's calculus of 'What comes next?'
zhlédnutí 809KPřed 2 lety
Why don't they teach Newton's calculus of 'What comes next?'
The Iron Man hyperspace formula really works (hypercube visualising, Euler's n-D polyhedron formula)
zhlédnutí 303KPřed 2 lety
The Iron Man hyperspace formula really works (hypercube visualising, Euler's n-D polyhedron formula)
The Moessner Miracle. Why wasn't this discovered for over 2000 years?
zhlédnutí 686KPřed 2 lety
The Moessner Miracle. Why wasn't this discovered for over 2000 years?
The Pigeon Hole Principle: 7 gorgeous proofs
zhlédnutí 180KPřed 3 lety
The Pigeon Hole Principle: 7 gorgeous proofs
The ultimate tower of Hanoi algorithm
zhlédnutí 222KPřed 3 lety
The ultimate tower of Hanoi algorithm
Explaining the bizarre pattern in making change for a googol dollars (infinite generating functions)
zhlédnutí 141KPřed 3 lety
Explaining the bizarre pattern in making change for a googol dollars (infinite generating functions)
The ARCTIC CIRCLE THEOREM or Why do physicists play dominoes?
zhlédnutí 324KPřed 3 lety
The ARCTIC CIRCLE THEOREM or Why do physicists play dominoes?
700 years of secrets of the Sum of Sums (paradoxical harmonic series)
zhlédnutí 778KPřed 3 lety
700 years of secrets of the Sum of Sums (paradoxical harmonic series)
The hardest "What comes next?" (Euler's pentagonal formula)
zhlédnutí 746KPřed 3 lety
The hardest "What comes next?" (Euler's pentagonal formula)

Komentáře

  • @TN-cx4qi
    @TN-cx4qi Před 8 hodinami

    I’m disappointed that you didn’t use pi for either the multiplier or the modulus. Guess I’ll have to write a program to show me what happens. 🤔 *edit - use pi as the multiplier and 512 as the modulus and it’s looks very interesting

  • @plopzzzzzz
    @plopzzzzzz Před 14 hodinami

    Cuba banks just collapsed People lost everything Coming to a bank near you 💯Buy Silver Now!!!!!!!! It’s going to explode 🍿🤯🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🚀🤓👍Banks banning cash withdrawals Worldwide

  • @nexaentertainment2764
    @nexaentertainment2764 Před 19 hodinami

    Calc 1 is incredibly overhyped on difficulty. The hardest part of calc is the algebra lol Calc 2 on the other hand is quite difficult ime.

  • @Nothingtonnobodson
    @Nothingtonnobodson Před 20 hodinami

    awesome video great as a trick for difficult MCQ problems

  • @tiberiupaslaru3830

    Swivel proof is much more “aha”-ish at the end 😮 And you should award Conway the “honorary mathologer” medal or something 😢 RIP JC

  • @tappyentmt4123
    @tappyentmt4123 Před dnem

    16:18 damn it also explains why lim tends to infinity (1+1/n)^n = e

  • @jp-hh9xq
    @jp-hh9xq Před dnem

    This video really helps build intuition for that identity thank you.

  • @Sean-xz1pi
    @Sean-xz1pi Před dnem

    I wonder if there is also a connection to rotations i.e. that SO(3) is not simply connected. Would be crazy if that were the case

  • @andrewnotgonnatellya7019

    This reminds me of Davenport's statement on the birthday paradox that he simply cannot believe it wasn't found earlier.

  • @sadiepeterson9796
    @sadiepeterson9796 Před dnem

    yay 😀 🤗 😆

  • @qroadside
    @qroadside Před dnem

    Worst connect four ever

  • @zackbrown213
    @zackbrown213 Před 2 dny

    Dude I hope you teach math. Our school system is so dry, you’re literally teaching sacred geometry with numbers. If I had learned this when I was young I would understand the universe much better.

  • @carollane8694
    @carollane8694 Před 2 dny

    Ferris Bueller tried reversing an odometer. It didn't end well for him.

  • @alvapazz
    @alvapazz Před 2 dny

    I got it!

  • @sethphillips46735
    @sethphillips46735 Před 2 dny

    I liked the "coloring" proof, it was easier to see why it must be true.

  • @aku7598
    @aku7598 Před 2 dny

    Creating a function is really hard, especially in physics.

  • @clir6o
    @clir6o Před 2 dny

    This proves that perfect circles do not exist , and we can stop limiting ourselves with them

  • @VoidPants
    @VoidPants Před 3 dny

    e

  • @VoidPants
    @VoidPants Před 3 dny

    2x a of stuff = a of stuff squared STOP I KNOW THAT GUY IVE SEEN THAT BEFORE ?!

  • @bludeat7398
    @bludeat7398 Před 3 dny

    from triangle inequality the diameter of wiper curve is larger because if you take triangle with base of diameter of wiper and center of circle then 2r_circle < d_wiper

  • @elidan7932
    @elidan7932 Před 3 dny

    That vortex pattern looks like the vw logo ...

  • @Ethan13371
    @Ethan13371 Před 4 dny

    Could you instead count down from the assassin that killed Batman, ignoring the initial numbers? Let’s say that the assassin that killed Batman is assassin i, while the assassin immediately to the left of him is 2i, the next is 3i, so on.

  • @yordangrigorov6399
    @yordangrigorov6399 Před 4 dny

    this video is a wealth of information hidden behind an obscure title!

  • @randy7894
    @randy7894 Před 5 dny

    Ofcourse. The universe favors base 10.

  • @manny2fs
    @manny2fs Před 5 dny

    The secret to finding the rebel alliance

  • @aaronspeedy7780
    @aaronspeedy7780 Před 5 dny

    They've started teaching this in AP PreCalculus, but sadly they are butchering it.

  • @aceofanimation4325
    @aceofanimation4325 Před 5 dny

    Pi shirt goes crazy

  • @mchristr
    @mchristr Před 5 dny

    I once asked a math teacher what exactly is calculus. They began doing examples on the board. After politely watching the teacher go through the steps on how to solve a problem, I said that I wasn't asking how to do calculus but rather what it is as a concept. After mumbling something about change over time, they gave up. So I majored in philosophy.

  • @raphaelbajet7583
    @raphaelbajet7583 Před 5 dny

    i want this shirt

  • @user-nf8ty6lj4o
    @user-nf8ty6lj4o Před 5 dny

    Wont ce^(x^2)-1 work

  • @maramtanooj8917
    @maramtanooj8917 Před 5 dny

    Looking at this video, the guy in the video and the comments, it makes sense why is the greatest Tesla

  • @user-km2tp5lo7e
    @user-km2tp5lo7e Před 6 dny

    You started simple and moved to a terrifying state by displaying those functions

  • @Alex-ff8si
    @Alex-ff8si Před 6 dny

    the awnswer 15:36 IS 5 18:47 SCHIFFALI SYMBOL {5/2} 20:58 180

  • @jacobzimmermann59
    @jacobzimmermann59 Před 6 dny

    The swivel proof is definitely cooler although I went basically the color proof route.

  • @bonquaviusdingle5720

    But is 1/x a "shape" in the same way as a cat? One has infinite area, the other doesn't?

  • @schizoframia4874
    @schizoframia4874 Před 6 dny

    29:55 plus or minus i ? That is the detail he is referring to?

  • @stelun56
    @stelun56 Před 7 dny

    i created a c program to anser calculus questions from harvards math entrance exam - easily done

  • @swbusby
    @swbusby Před 7 dny

    To an Engineer every number has value and precision. So my 10 is a ten to the precision of my measurement. My 0.9999... is to the precision of my measurement. I might say that .999... approaches 10 as it's precision approaches infinity.

    • @thetaomegatheta
      @thetaomegatheta Před 6 dny

      Or you could study a little bit of calculus and realise that 0.999... is exactly 1. And no, 0.999... is nowhere close to 10, unless you are an astronomer or something, and round to orders of magnitude.

  • @gregorypkampwirth8852

    This looks like an optical illusion, because the lines don't really appear to be of equal length!! Fascinating stuff!! Even though the professor maintains that they are all of equal length, or so I thought 💭 I heard him say!! Hmmm!!! Food for thought 💭

  • @solarwonder
    @solarwonder Před 7 dny

    the reuleaux triangle reminds me of a tool arctic peoples use to skin animals. there are many synergetic surprises in how geometry gets into ergonomic designs. there are many ways to skin a cat in math, too.

  • @juanmoralesvideo
    @juanmoralesvideo Před 7 dny

    I don't understand the 3 colour proof, so I like the magenta-aqua proof.

  • @jamirimaj6880
    @jamirimaj6880 Před 7 dny

    7:54 is the perfect analogy to think the paradox rationally: You can divide any shape by adding a number of lines, but it will still have the same area.

  • @liijio
    @liijio Před 7 dny

    Proving continuum hypothesis , proving inconsistency in ZFC , constructing ZFC from naive set specification , resolving Russell's paradox , constructing infinite number system , construct and ensure overall consistent mathematical universe and developing arithmetic system - edition 8 May 2024 DOI: 10.13140/RG.2.2.21713.75361 LicenseCC BY-NC-ND 4.0

  • @billypathy
    @billypathy Před 7 dny

    i still dont think homer would understand...

  • @IbnBahtuta
    @IbnBahtuta Před 7 dny

    The answer to the question in your upload's title is so simple I can't understand why you can't work it out. For centuries now, the masses don't need to know any maths to do factory labour. Today all they do is press buttons and clean the robots. The holy grail for the manufacturer is a workforce of zero. As it is now, when new factories are built, they invent jobs for people in them to get the tax breaks. The workers are becoming surplus to requirement. What jobs will they do, maths teachers, hardly, that will be done much better by software.

  • @MeiziVu
    @MeiziVu Před 8 dny

    36:23 😵‍💫😵‍💫😵‍💫😵‍💫

  • @cyrilmeynier5688
    @cyrilmeynier5688 Před 8 dny

    About Gelfund's number : it used to be a joke that mathematicians did to programmers Compute exp(pi) - pi and it should give 20, if it doesn't, you have floating point rounding problems.

  • @DoanVu-nb6hn
    @DoanVu-nb6hn Před 8 dny

    31:43 quotient rule -> what does h stand for?

  • @PrithwirajSen-nj6qq

    I do like to say that we may take Brahmsgupta formula as the base to return from this formula to Hero formula. The form of Barhamagupta formula I do like to memorize as below Area of quadrilateral = 1/4√[(-a+b+c+d)(a-b+c+d)(a+b-c+d)(a+b+c-d) ] ++ note that sign of a,, b, c, d become negative one after another ++It will be easy to memirize++ Now if we take d=0 then we may get Hero formula. Area of 🔺 = 1/4√[(-a+b+c)(a-b+c)(a+b-c) (a+b+c)] ++ Sign of a, b, c is negative on after another ++It is also easy to memorize and also to check whether we have correctly reach to Hero from Brahmagupta or not.

  • @roninkegawa1804
    @roninkegawa1804 Před 9 dny

    Soooo, a distance is a one dimension entity, but it can be calculated as a 2 dimensions entity. Where am I wrong here?