Are there 10^272,000 Universes? – Numberphile

From Numberphile. Featuring Tony Padilla. Check https://brilliant.org/numberphile for Brilliant and get 20% off their premium service (episode sponsor) More links & stuff in full description below ↓↓↓ We have a physics channel too: https://www.youtube.com/user/sixtysymbols Order Tony’s book Fantastic Numbers and Where to Find Them: A Cosmic Quest from Zero to Infinity Amazon US – https://amzn.to/3JYQbws…

chickensalad.mp4

From Vihart. Just a casual chat about abortion while making chicken salad. Here’s a link I found that’s pretty good, if you’re looking for calls to action: bit.ly/RoeWYCD Usually my videos are funded by Patreon, but this one isn’t, because that could be awkward for the folks I might usually name as funders. So. Patreon…

Mathematical Hugs (and Chiral Knots) – Numberphile

From Numberphile. Extra footage at: https://youtu.be/ue9LHv4XXBQ – Featuring Ayliean MacDonald. More links & stuff in full description below ↓↓↓ More about Ayliean MacDonald: https://linktr.ee/Ayliean Ayliean videos on Numberphile: https://bit.ly/Ayliean_Playlist Knots Playlist: http://bit.ly/Knot-a-Phile Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated…

Is this the ultimate sine pattern?

From Standup Mathematician. You can buy the jacket from the video! Signed by Matt. Or not. You choose. (All money goes to charity. You don’t have a choice about that.) https://www.ebay.co.uk/itm/363879463026 Here is the Geobebra file "Trigonometry Tracer" made by Ben Sparks: https://www.geogebra.org/m/S2W46Thv Do check out Ben’s channel: https://youtube.com/c/SparksMaths Katie "radians" Steckles is also on…

Primes and Primitive Sets (an Erdős Conjecture is cracked) – Numberphile

From Numberphile. Extra footage at https://youtu.be/-r2agPNx0gA – Featuring Jared Duker Lichtman. More links & stuff in full description below ↓↓↓ A proof of the Erdős primitive set conjecture: https://arxiv.org/abs/2202.02384 More Prime Number videos: https://bit.ly/PrimePlaylist Jared Duker Lichtman: https://www.maths.ox.ac.uk/people/jared.lichtman Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science…

New World Record! 100 Trillion digits of π.

From Standup Mathematician. Check out Emma’s blog post about the calculation: https://cloud.google.com/blog/products/compute/calculating-100-trillion-digits-of-pi-on-google-cloud Register for Emma’s live seminar! It’s on at 19:00 BST and different time zones are different. https://cloudonair.withgoogle.com/events/pi-time Emma Haruka Iwao’s records: 2019: 31,415,926,535,897 digits of π 2022: 100,000,000,000,000 digits of π Chudnovsky algorithm https://en.wikipedia.org/wiki/Chudnovsky_algorithm And here is me Chudnovskying by hand: https://www.youtube.com/watch?v=LhlqCJjbEa0 Bailey–Borwein–Plouffe…

Summer of Math Exposition #2

From 3Blue1Brown. Mailing-list: https://summerofmathexposition.substack.com/p/the-summer-of-math-exposition-is?s=r Find collaborators here: https://github.com/leios/SoME_Topics/ Join the discord: https://discord.gg/dsp3zgB4qQ Submission form: https://forms.gle/sNqosxqwCW2EjPVu5 Last year’s results: https://3b1b.co/blog/some1-results —————— Music by Vincent Rubinetti. https://www.vincentrubinetti.com/ —————— 3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted on new…

A number NOBODY has thought of – Numberphile

From Numberphile. Featuring Tony Padilla. Check https://brilliant.org/numberphile for Brilliant and get 20% off their premium service (episode sponsor) More links & stuff in full description below ↓↓↓ Tony at the University of Nottingham – https://www.nottingham.ac.uk/physics/people/antonio.padilla Order Tony’s book Fantastic Numbers and Where to Find Them: A Cosmic Quest from Zero to Infinity Amazon US –…

Heron’s formula: What is the hidden meaning of 1 + 2 + 3 = 1 x 2 x 3 ?

From Mathologer. Today’s video is about Heron’s famous formula and Brahmagupta’s and Bretschneider’s extensions of this formula and what these formulas have to do with that curious identity 1+2+3=1x2x3. 00:00 Intro 01:01 1+2+3=1x2x3 in action 02:11 Equilateral triangle 02:30 Golden triangle 03:09 Chapter 1: Heron 06:18 Heron’s formula 08:50 Brahmagupta’s formula 10:20 Bretschneider’s formula 11:52…

Two Candles, One Cake (Part 2) – Numberphile

From Numberphile. Ben Sparks continuing from Part 1, which is at: https://youtu.be/FkVe8qrT0LA Go deeper with Ben’s explanation at https://youtu.be/0eqBG6lz2mE More links & stuff in full description below ↓↓↓ Ben Sparks Numberphile playlist: http://bit.ly/Sparks_Playlist Ben on the Numberphile Podcast: https://youtu.be/-tGni9ObJWk Ben’s website: https://www.bensparks.co.uk Ben’s own YouTube channel: https://www.youtube.com/channel/UCNS_GTzkj_-qUoNAGaSX5jA Various cakes and cutting videos: https://youtube.com/playlist?list=PLt5AfwLFPxWKusrFky50yUbNDuUrxLWNz Bertrand’s Paradox:…

Two Candles, One Cake – Numberphile

From Numberphile. Featuring Ben Sparks. See part 2 at https://youtu.be/l5gUrDg01cQ More links & stuff in full description below ↓↓↓ Ben Sparks Numberphile playlist: http://bit.ly/Sparks_Playlist Ben on the Numberphile Podcast: https://youtu.be/-tGni9ObJWk Ben’s website: https://www.bensparks.co.uk Ben’s own YouTube channel: https://www.youtube.com/channel/UCNS_GTzkj_-qUoNAGaSX5jA Various cakes and cutting videos: https://youtube.com/playlist?list=PLt5AfwLFPxWKusrFky50yUbNDuUrxLWNz Bertrand’s Paradox: https://youtu.be/mZBwsm6B280 Numberphile is supported by the Mathematical Sciences Research…

I found Amongi in the digits of pi!

From Standup Mathematician. Thank you to BetterHelp for sponsoring this video! To get 10% off your first month of therapy, go to https://betterhelp.com/standupmaths to sign up today. If you are need of urgent mental health support please check for crisis help lines available in your country. USA: https://www.mentalhealth.gov/get-help/immediate-help UK: https://www.nhs.uk/mental-health/advice-for-life-situations-and-events/where-to-get-urgent-help-for-mental-health/ Plus if you are in…

How Roman numerals broke the official dog database.

From Standup Mathematician. Check out the Jane Street Academy of Math and Programming and do pass on to any one who could benefit. https://www.janestreet.com/join-jane-street/our-programs/amp/ If you like mono-media, here is A Podcast of Unnecessary Detail. https://festivalofthespokennerd.com/podcast I talked about the 37 Dogs problem in season 01, episode 05. And while I’m plugging things: did you…

What was the most expensive book ever?

From Standup Mathematician. Support my Humble Pi filming: get ridiculous perks. https://www.kickstarter.com/projects/standupmaths/matt-parkers-humble-pi-stand-up-show-filming See the filming happen in person! Thursday 21 April 2022 at the Bloomsbury Theatre in London. https://www.ucl.ac.uk/culture/whats-on/matt-parker Original blog post about the book prices by Michael Eisen of the Eisen Lab, University of California, Berkeley. https://www.michaeleisen.org/blog/?p=358 Wikipedia is a good place to start…

The magic log wheel: How was this missed for 400 years?

From Mathologer. Today is about reinventing a really cool mathematical wheel and its many different slide rule incarnations, just using a rubber band. 00:00 Intro 04:40 Multiply! 06:02 Pi times e 07:15 Divide! 08:39 Sliding rules 10:53 Apollo 11:08 Star Trek 11:45 Rubber band proof 13:13 Logarithms 16:50 Dmity’s wheel 17:48 Thank you! This video…

Twin Proofs for Twin Primes – Numberphile

From Numberphile. With Ben Sparks… Check https://brilliant.org/numberphile for Brilliant and get 20% off their premium service (episode sponsor) More links & stuff in full description below ↓↓↓ Twin primes with James Maynard: https://youtu.be/QKHKD8bRAro Ben Sparks on the Numberphile Podcast: https://youtu.be/-tGni9ObJWk More Ben Sparks on Numberphile: http://bit.ly/Sparks_Playlist Ben’s website: https://www.bensparks.co.uk Ben’s YouTube channel: https://www.youtube.com/channel/UCNS_GTzkj_-qUoNAGaSX5jA Numberphile is…

Big Factorials – Numberphile

From Numberphile. Large factorials and the use of Stirling’s Approximation. Featuring Professor Ken McLaughlin. More links & stuff in full description below ↓↓↓ Professor McLaughlin is based at Colorado State University: https://www.math.colostate.edu/~kenmcl/ We filmed this during his time at the Mathematical Sciences Research Institute. 69 Factorial: https://www.youtube.com/watch?v=kw6l_uTakRA Numberphile is supported by the Mathematical Sciences Research…

Piano Secrets – Masterclass for Pi 2022

From Vihart. I don’t know who this video is for, but it’s here. Now is a good time for music, I think? Stuff you can buy to support this work: https://store.dftba.com/collections/vi-hart The sheetmusic and recording for the Pi Day 2022 piano composition: https://store.dftba.com/products/piano-sheet-music-digital-download-and-mp3 Exclusive shirt, cryptic edition, doubles as a puzzle: https://store.dftba.com/products/pi-day-2022-exclusive-shirt-cryptic-edition Exclusive shirt, shiny…

The Reciprocals of Primes – Numberphile

From Numberphile. Matt Parker explores the work of William Shanks – and boots up the ShanksBot. More links & stuff in full description below ↓↓↓ Matt Parker’s 2022 Pi Day Video: https://youtu.be/dtiLxLrzjOQ Discussing William Shanks on Objectivity: https://youtu.be/7yTXMeiVBCc Prime Number playlist: https://bit.ly/PrimePlaylist Pi playlist: http://bit.ly/PiPlaylist Matt Parker website: https://standupmaths.com Numberphile is supported by the Mathematical…

Pi Day 2022 – Chromatic Piano

From Vihart. This is my 12th annual Pi Day video. How am I still here? How are you? I don’t usually share "serious" music on the internet but I decided that March 2022 is a time to start. So I’m leaning hard into Pi Day and March 2022 this year, to not let another month…

The Coca-Cola Klein Bottle – Numberphile

From Numberphile. Cliff Stoll – the King of Klein Bottles – shows us more designs, including the Coke Klein Bottle… Full Klein Bottle Playlist: http://bit.ly/KleinBottles More links & stuff in full description below ↓↓↓ More videos with Cliff Stoll: http://bit.ly/Cliff_Videos Cliff’s Klein Bottle shop: http://bit.ly/ACME_Klein Lucas Clarke: https://www.lucasclarke.glass Coke stuff on Brady’s chemistry channel Periodic…

Why don’t Jigsaw Puzzles have the correct number of pieces?

From Standup Mathematician. Thank you to BetterHelp for sponsoring this video! To get 10% off your first month of therapy, go to https://betterhelp.com/standupmaths to sign up today. If you are need of urgent mental health support please check for crisis help lines available in your country. USA: https://www.mentalhealth.gov/get-help/immediate-help UK: https://www.nhs.uk/mental-health/advice-for-life-situations-and-events/where-to-get-urgent-help-for-mental-health/ Plus if you are in…

Sculpting with Tetrahedra – Numberphile

From Numberphile. Featuring Marcus Du Sautoy discussing polyhedra and the art of Conrad Shawcross… More links & stuff in full description below ↓↓↓ Marcus Du Sautoy website: https://www.simonyi.ox.ac.uk Marcus’ books on Amazon: https://amzn.to/33YbOxS More videos with Marcus: https://bit.ly/Marcus_Numberphile Conrad Shawcross (artist): https://conradshawcross.com Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are…

Twos-Day Tuesday! 22 YouTubers celebrate all things “two” and nothing goes wrong.

From Standup Mathematician. Happy Twos-Day Tuesday! Please donate to WaterAid using the fundraising link on this video or direct at https://www.wateraid.org/ It’s ridiculous that in 2022 not every human can go for a safe and sanitary number two. Continue this video on Steve Mould Shorts: https://youtube.com/shorts/267MQF1z2PU And then on Numberphile 2: https://youtu.be/2XKuG7cA03A This video featured…

The Coupon Collector’s Problem (with Geoff Marshall)

From Standup Mathematician. Check out Geoff’s channel. Here’s a video I’m in about Platforms Zero: https://www.youtube.com/watch?v=TTHOyTypNs8 Find your nearest Park Run: https://www.parkrun.com/ Thanks to all of Geoff’s running buddies for being involved. This is Matt’s Runderground channel: https://www.youtube.com/c/runderground Cheers to my Patreon supporters who keep this whole channel running. But not literally. You can also…

The Mathematics of Surviving Zombies – Numberphile

From Numberphile. With Thomas Woolley… Check https://brilliant.org/numberphile for Brilliant and get 20% off their premium service (episode sponsor) More links & stuff in full description below ↓↓↓ Thomas Woolley at Cardiff University: https://www.cardiff.ac.uk/people/view/783107-woolley-thomas Thomas on Twitter: https://twitter.com/ThomasEWoolley Some of these Zombies on some merch: https://numberphile.creator-spring.com/listing/zombie-equation-numberphile Objectivity: http://bit.ly/Objectivity Sixty Symbols: http://bit.ly/sixtysymbols Numberphile is supported by the…

Plotting Pi and Searching for Mona Lisa – Numberphile

From Numberphile. Matt Henderson lets his plotter loose on Pi. This plotting extravaganza follows on from this earlier video: https://youtu.be/kMBj2fp52tA More links & stuff in full description below ↓↓↓ Matt Henderson on Twitter (he posts lovely animations there): https://twitter.com/matthen2 Matt Henderson Numberphile Playlist: https://bit.ly/MattHendersonPlaylist 36-degree Mona Merch: https://numberphile.creator-spring.com/listing/36-degree-mona-numberphile (*) The Mona Lisa is just an…

The Plotting of Beautiful Curves (Euler Spirals and Sierpiński Triangles) – Numberphile

From Numberphile. This the first or two parts with Matt Henderson and his plotter – more *very* soon. More links & stuff in full description below ↓↓↓ Matt Henderson on Twitter (he posts lovely animations there): https://twitter.com/matthen2 Matt Henderson Numberphile Playlist: https://bit.ly/MattHendersonPlaylist Euler Spiral World Map: https://youtu.be/D3tdW9l1690 Numberphile is supported by the Mathematical Sciences Research…

Tunnelling through a Mountain – Numberphile

From Numberphile. Featuring Professor Hannah Fry – more details on her work below. Check out Brilliant (get 20% off their premium service): https://brilliant.org/numberphile (sponsor) More links & stuff in full description below ↓↓↓ Hannah Fry: https://hannahfry.co.uk Hannah’s books: https://amzn.to/3ArNEaA Her latest is Rutherford and Fry’s Complete Guide to Absolutely Everything: https://amzn.to/3tSvYDN More Hannah Fry on…

What is a Number? – Numberphile

From Numberphile. Featuring Asaf Karagila. More links & stuff in full description below ↓↓↓ Asaf is a UKRI Future Leaders Fellow. Asaf’s blog – http://karagila.org Asaf’s Twitter – https://twitter.com/AsafKaragila Numberphile podcast featuring Asaf – https://youtu.be/b6GLCTh5ARI All the Numbers with Matt Parker – https://youtu.be/5TkIe60y2GI Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We…

Stones on an Infinite Chessboard – Numberphile

From Numberphile. Another curious puzzle and number sequence from Neil Sloane. More of our videos with Neil: http://bit.ly/Sloane_Numberphile More links & stuff in full description below ↓↓↓ Neil Sloane is founder of the On-Line Encyclopedia of Integer Sequences: https://oeis.org More of our videos with Neil Sloane: http://bit.ly/Sloane_Numberphile Pebbling a chessboard with Zvezda Stankova: https://youtu.be/lFQGSGsXbXE Patreon:…

The 3-4-7 miracle. Why is this one not super famous?

From Mathologer. I got sidetracked again by a puzzling little mathematical miracle. And, as usual, I could not help myself and just had to figure it out. Here is the result of my efforts. 00:00 Intro 08:45 The Coin rotation paradox 16:00 Mystery number explanation 18:38 Challenges and the new book 19:53 One-minute animation on…

Conic Loaf of Bread – Numberphile

From Numberphile. Featuring Cliff Stoll – http://bit.ly/Cliff_Videos More links & stuff in full description below ↓↓↓ Cliff’s website: https://www.kleinbottle.com Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. https://www.simonsfoundation.org/outreach/science-sandbox/ And support from The…

Bertrand’s Paradox (with 3blue1brown) – Numberphile

From Numberphile. Featuring Grant Sanderson, creator of 3blue1brown. Extra footage from this interview: https://youtu.be/pJyKM-7IgAU 3blue1brown video on the shadow a cube: https://youtu.be/ltLUadnCyi0 More links & stuff in full description below ↓↓↓ 3blue1brown: https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw Grant on The Numberphile Podcast: https://youtu.be/A0RH93XvSyU Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by…

Alice, Bob, and the average shadow of a cube

From 3Blue1Brown. A tale of two problem solvers. Numberphile video on Bertrand’s paradox: https://youtu.be/mZBwsm6B280 Help fund future projects: https://www.patreon.com/3blue1brown​ Special thanks to these supporters: https://3b1b.co/lessons/newtons-fractal#thanks An equally valuable form of support is to simply share the videos. I first heard this puzzle in a problem-solving seminar at Stanford, but the general result about all convex…

The Largest Small Hexagon – Numberphile

From Numberphile. Featuring Dr James Grime. More links below. Check out Brilliant (get 20% off their premium service): https://brilliant.org/numberphile (sponsor) More links & stuff in full description below ↓↓↓ Ron Graham’s paper: http://www.math.ucsd.edu/~fan/ron/papers/75_02_hexagon.pdf James Grime: https://www.singingbanana.com His YouTube channel: https://www.youtube.com/user/singingbanana More James on Numberphile: http://bit.ly/grimevideos Numberphile is supported by the Mathematical Sciences Research Institute (MSRI):…

The Most Wanted Prime Number – Numberphile

From Numberphile. Featuring Neil Sloane. Visit https://gift.climeworks.com/numberphile to give the gift of CO₂ removal. Use code NUMBERPHILE10 for 10% off your purchase in December (sponsor) More links & stuff in full description below ↓↓↓ Neil Sloane is the founder of The OEIS: https://oeis.org More videos with Neil: http://bit.ly/Sloane_Numberphile Prime Playlist: https://bit.ly/PrimePlaylist Note the 17350-digit prime…

Omicron (the symbol) in Mathematics – Numberphile

From Numberphile. Professor Tony Padilla discusses the Greek letter Omicron. More links & stuff in full description below ↓↓↓ More Numberphile with Tony: http://bit.ly/Padilla_Numberphile More Numberphile on Covid: https://bit.ly/339Wuxf Don Knuth on Numberphile: https://youtu.be/mPn2AdMH7UQ and https://youtu.be/v678Em6qyzk Objectivity video about The Almagest: https://youtu.be/QW29uaD78OU Tony Padilla is based at the University of Nottingham: https://www.nottingham.ac.uk/physics/people/antonio.padilla Pre-order Tony’s upcoming…

Hitomezashi Stitch Patterns – Numberphile

From Numberphile. Ayliean MacDonald discusses Hitomezashi Stitch Patterns. More links & stuff in full description below ↓↓↓ More about Ayliean MacDonald: https://linktr.ee/Ayliean Previous video with Ayliean (Tower of Hanoi set to music): https://youtu.be/PGuRmqpr6Oo Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative…

Is there an equation for a triangle?

From Standup Mathematician. Thank you to BetterHelp for sponsoring this video! To get 10% off your first month of therapy, go to https://betterhelp.com/standupmaths to sign up today. If you are need of urgent mental health support please check for crisis help lines available in your country. USA: https://www.mentalhealth.gov/get-help/immediate-help UK: https://www.nhs.uk/mental-health/advice-for-life-situations-and-events/where-to-get-urgent-help-for-mental-health/ Sign up to my patreon…

Witness Numbers (and the truthful 1,662,803) – Numberphile

From Numberphile. Featuring Matt Parker – more Parker links below. Check out Brilliant (get 20% off their premium service): https://brilliant.org/numberphile (sponsor) More links & stuff in full description below ↓↓↓ MATT PARKER STUFF Stand-Ups Maths on YouTube: https://www.youtube.com/user/standupmaths Matt’s website: https://standupmaths.com Matt’s Books (Amazon): https://amzn.to/3absFfV Matt’s playlist on Numberphile: http://bit.ly/Matt_Videos Parker Square Merch: https://numberphile.creator-spring.com/listing/the-parker-square Numberphile…