A Bizarre Sudoku Set-Up – Numberphile

From Numberphile. Featuring Mark Goodliffe from Cracking the Cryptic. See https://brilliant.org/numberphile for Brilliant and 20% off their premium service & 30-day trial (episode sponsor). More links & stuff in full description below ↓↓↓ Cracking the Cryptic (featuring Mark and his off-sider Simon): https://www.youtube.com/c/CrackingTheCryptic See Simon crack this puzzle at: https://youtu.be/HVt_VnkFW0Q More from CtC on Numberphile:…

Behold the Folded Circle Snack Discovery

From Vihart. Naan. Pita. Tortilla. Crepe. These are just some of the foldable circle snacks you can find here on the wondrous planet Earth. But how far does it go? Join us this Pi Day as we explore whether aliens would think Earth is cooler if we stopped sending digits of pi into space This…

The biggest hand calculation in a century! [π Day 2024]

From Standup Mathematician. Please note down the new value of pi: 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223176 If you’d like to sign up to hear about future ridiculous maths projects that require volunteers: https://forms.gle/w44THpNJ3jWUPqHy6 Play list of all my previous calculating pi videos: https://youtube.com/playlist?list=PLhtC92GarkjyYbxI3-4qzIWIRbZaw4wuP&si=DzWXgnv_vYfDgiLZ This calculation was paid-for with surplus funding from a previous Stand-up Maths kick-starter. If you’d like…

Rotation without rotating.

From Standup Mathematician. Check out Jane Street’s excellent Academy of Math and Programming (AMP). https://bit.ly/sum-amp Here are Andrew Taylors slides on "Rotation with three shears". I saw him give this talk at the MathsJam Gathering 2023. The proof is on page 4. https://github.andrewt.net/shears/ This is a nice introduction to the concept: https://cohost.org/tomforsyth/post/891823-rotation-with-three Way more details…

What are these symbols? – Numberphile

From Numberphile. Asaf Karagila discusses some of the symbols used in Logic and Set Theory. More links & stuff in full description below ↓↓↓ Asaf is a UKRI Future Leaders Fellow. Asaf’s blog – https://karagila.org More videos and Numberphile podcast featuring Asaf – https://www.youtube.com/playlist?list=PLt5AfwLFPxWJyt0zdvzvDoeL_8pqO0S7p The video about Aleph and "Ultimate Infinity" will be coming soon…

The many cubes hidden inside a dodecahedron

From Standup Mathematician. Do check out my video with Adam Savage over on Tested: https://youtu.be/s_F4uD8wAs0 Yes, I’m back in NYC for An Evening of Unnecessary Detail on Sunday April 14. https://www.eventbrite.com/e/matt-parker-an-evening-of-unnecessary-detail-tickets-847453715877?aff=oddtdtcreator Pre-order my new book! https://mathsgear.co.uk/collections/books/products/love-triangle-by-matt-parker-signed The excellent graphics of spinning dodecahedrons were made by Ben Sparks. You can see the GeoGebra file here: https://www.geogebra.org/m/yhkepkbc…

The beautiful maths which makes 5G faster than 4G, faster than 3G, faster than…

From Standup Mathematician. Pre-order Love Triangle on Maths Gear now and get a signed copy! Also, a special book cover if you’re fast enough. https://mathsgear.co.uk/products/love-triangle-by-matt-parker-signed UK edition out 20 June, pre-order options: https://bit.ly/UKLoveTriangle USA edition out 20 August, pre-order options: https://bit.ly/3wCTesR Here are the fantastic GeoGebra files Ben Sparks made for the video. Modulated 1…

Simple yet 5000 years missed ?

From Mathologer. 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.…

The 1,200 Year Maths Mistake

From Standup Mathematician. See you all in Wemding, Germany in 2033 for the next installation of this inevitable maths mistake. Thanks to everyone involved with Zeitpyramide who were hugely welcoming and accomodating. Official Zeitpyramyde website: http://www.zeitpyramide.de/ Check out Ayliean MacDonald’s excellent work on TikTok and indeed YouTube: https://www.tiktok.com/@ayliean/video/7276938427071876385 https://www.youtube.com/@Ayliean We also had an very helpful…

Does -1/12 Protect Us From Infinity? – Numberphile

From Numberphile. Ten years later… Professor Tony Padilla returns to the thorny issue of summing the integers arriving at -1/12. More links & stuff in full description below ↓↓↓ Also newly uploaded today about -1/12: https://youtu.be/FmLIGN8ZGdw -1/12 shield sticker and t-shirts: https://numberphile.creator-spring.com/listing/1-12-shield-numberphile Here’s the new paper: https://arxiv.org/abs/2401.10981 Here are our -1/12 videos, including the one…

The Return of -1/12 – Numberphile

From Numberphile. Featuring Tony Feng from UC Berkeley. See our other new video today about -1/12 with Tony Padilla at https://youtu.be/beakj767uG4 More links & stuff in full description below ↓↓↓ See our full -1/12 playlist: https://www.youtube.com/playlist?list=PLt5AfwLFPxWK2zCU-4X1iuuu5m8hf6L1B Tony Feng’s website: https://math.berkeley.edu/~fengt/ Note: As explained by Brady at the end of this video, Tony Feng did not…

What’s up with this strange number coincidence?

From Standup Mathematician. Support "Doing Things the Hard Way Matt" on patreon: https://www.patreon.com/standupmaths Full video of Doing Things the Hard Way Matt doing things the hard way is on Patreon: https://www.patreon.com/posts/watch-full-doing-98412935 OEIS sequence A010527 "Decimal expansion of sqrt(3)/2" https://oeis.org/A010527 Do support the OEIS! https://oeisf.org/donate/ And here are a bunch of the digits: 0.8660254037844386467637231707529361834714026269051903140279034897 Wikipedia page…

The Game of Risk – Numberphile

From Numberphile. Mathematician and game enthusiast Marcus du Sautoy discusses the iconic game of Risk. More links & stuff in full description below ↓↓↓ Around the World in Eighty Games (Amazon affiliate link): https://amzn.to/3snW2bD More about the book: https://www.simonyi.ox.ac.uk/books/around-the-world-in-80-games/ Marcus du Sautoy books: https://amzn.to/3QkSjnf Marcus du Sautoy website: https://www.simonyi.ox.ac.uk More videos with Marcus: https://bit.ly/Marcus_Numberphile Dice…

The Z Factor – Numberphile

From Numberphile. Featuring Tom Crawford. Jane Street skyscraper puzzle (and info on the AMP program) at https://bit.ly/numberphile-amp — More links & stuff in full description below ↓↓↓ Jane Street’s Academy of Math and Programming is now accepting applications for their summer 2024 program, which will run from June 29th-August 2nd in NYC… Or you can…

Catalan Numbers – Numberphile

From Numberphile. Featuring Sophie Maclean. See https://brilliant.org/numberphile for Brilliant and 20% off their premium service & 30-day trial (episode sponsor). More links & stuff in full description below ↓↓↓ Sophie Maclean is based at Kings College, London: https://sophiethemathmo.wordpress.com More Sophie on Numberphile: https://bit.ly/Sophie_Numberphile Pascal’s Triangle: https://youtu.be/0iMtlus-afo Patreon: http://www.patreon.com/numberphile Numberphile is supported by Jane Street. Learn…

The Most Mathematical Sudoku – Numberphile

From Numberphile. Simon Anthony (from Cracking the Cryptic) shows us an incredible sudoku set by a mathematician. See the Phistomefel Ring at: https://youtu.be/pezlnN4X52g More links & stuff in full description below ↓↓↓ Cracking the Cryptic: https://www.youtube.com/c/CrackingTheCryptic See Simon crack the puzzle at: https://youtu.be/qvfBBhhCLxo Another Numberphile video about Sudoku: https://youtu.be/MlyTq-xVkQE Thanks also to mathguy_12 (Nathan Hallmark)…

Why are the ice shelves collapsing?

From Standup Mathematician. Yes, I’m doing a show in LA on Sunday January 7. It’s a bit last-minute. Come and say hi! https://www.flapperscomedy.com/shows/an-evening-of-unnecessary-detail/72865/ Huge thanks to Sammie for sharing her equations. Check out her work at Northumbria University: https://www.northumbria.ac.uk/about-us/our-staff/b/sammie-buzzard/ "A Mathematical Model of Melt Lake Development on an Ice Shelf" https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017MS001155 Sammie’s very good MATLAB…

A Sudoku Secret to Blow Your Mind – Numberphile

From Numberphile. Simon Anthony (from Cracking the Cryptic) reveals the Phistomephel Ring – a hidden feature of ALL Sudoku puzzles. Second video is here: https://youtu.be/h8AulgkjyIc More links & stuff in full description below ↓↓↓ Cracking the Cryptic: https://www.youtube.com/c/CrackingTheCryptic Another Numberphile video about Sudoku: https://youtu.be/MlyTq-xVkQE Our thanks also to the legendary Phistomephel. Patreon: http://www.patreon.com/numberphile Numberphile is…

What’s the curse of the Schwarz lantern?

From Mathologer. 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…

Infinite Circles – Numberphile

From Numberphile. Professor Holly Krieger discusses filling an infinite plane with circles – without them touching or overlapping. More links & stuff in full description below ↓↓↓ More videos with Holly (playlist): http://bit.ly/HollyKrieger More videos about circles: https://www.youtube.com/playlist?list=PLt5AfwLFPxWJnoD6PZVQJvDW3l_cIpuiw Dr Holly Krieger is the Corfield Lecturer at the University of Cambridge and a Fellow at Murray…

Egyptian Fractions and the Greedy Algorithm – Numberphile

From Numberphile. Featuring Sophie Maclean. See https://brilliant.org/numberphile for Brilliant and 20% off their premium service & 30-day trial (episode sponsor). More links & stuff in full description below ↓↓↓ Sophie Maclean is based at Kings College, London: https://sophiethemathmo.wordpress.com More Sophie on Numberphile: https://bit.ly/Sophie_Numberphile Patreon: http://www.patreon.com/numberphile Numberphile is supported by Jane Street. Learn more about them…

244,432,188,000 games of Catan – Numberphile

From Numberphile. Featuring Marcus Du Sautoy. Check opportunities with Jane Street at https://bit.ly/numberphile-janestreet and Figgie at https://figgie.com (episode sponsor)… More links & stuff in full description below ↓↓↓ Around the World in Eighty Games (Amazon): https://amzn.to/3snW2bD More about the book: https://www.simonyi.ox.ac.uk/books/around-the-world-in-80-games/ Marcus du Sautoy books: https://amzn.to/3QkSjnf Marcus du Sautoy website: https://www.simonyi.ox.ac.uk More videos with Marcus:…

What are these strange dice? (Part 2) – Numberphile

From Numberphile. Featuring Henry Segerman. See Part 1 at https://youtu.be/3akBMSJ37Uk More links & stuff in full description below ↓↓↓ Henry and Robert Fathauer designed these "TheDiceLab" dice – more info at: http://thedicelab.com More dice videos: https://bit.ly/Dice_Videos More Numberphile videos with Henry Segerman: https://bit.ly/Segerman_Videos Humble Pi by Matt Parker: https://amzn.to/4a2FIhz The idea to make two/three/four sided…

What are these strange dice? – Numberphile

From Numberphile. Featuring Henry Segerman. See part 2 at https://youtu.be/8rYLBXd_kzI … See https://brilliant.org/numberphile for Brilliant and 20% off their premium service & 30-day trial (episode sponsor)… More links & stuff in full description below ↓↓↓ Henry and Robert Fathauer designed these "TheDiceLab" dice – more info at: http://thedicelab.com More dice videos: https://bit.ly/Dice_Videos More Numberphile videos…

Crescent Rolls

From Vihart. Doing it right for Thanksgiving. Yes, the roll sacrifice is a real tradition in my family. This video was not sponsored by Pillsbury, but it WAS supported by viewers like you, on Patreon. Special thanks to Ray Sidney, Andew Romaner, David Perryman, Alan Boulton, Carol Hart, David A Smith, not lesia, and Yana…

The Beautiful Math of Snakes and Ladders – Numberphile

From Numberphile. Featuring Marcus du Sautoy. Book details below. The game is also widely known as Chutes & Ladders. More links & stuff in full description below ↓↓↓ Around the World in Eighty Games (Amazon): https://amzn.to/3snW2bD More about the book: https://www.simonyi.ox.ac.uk/books/around-the-world-in-80-games/ Marcus du Sautoy books: https://amzn.to/3QkSjnf Marcus du Sautoy website: https://www.simonyi.ox.ac.uk More videos with Marcus:…

23% Beyond the Riemann Hypothesis – Numberphile

From Numberphile. Featuring Jared Duker Lichtman. More links & stuff in full description below ↓↓↓ Read more about this: https://www.maths.ox.ac.uk/node/65844 Jared Duker Lichtman: http://web.stanford.edu/~jdl18/ More videos: Riemann Hypothesis – https://youtu.be/d6c6uIyieoo The Key to the Riemann Hypothesis – https://youtu.be/VTveQ1ndH1c Primes and Primitive Sets (an earlier video with Jared) – https://youtu.be/33YSWaR3kAQ Patreon: http://www.patreon.com/numberphile Numberphile is supported by…

I have opinions about string light colors

From Vihart. It’s fine though. Bonus exercises for those who absolutely will continue to overthink this for the rest of their lives: 1. If you have a 150 light strand with 5 “Christmas” colors, and decide to remove all the pink ones and make it a 4 color pattern, what’s the minimum number of lights…

Why does Vegas have its own value of pi?

From Standup Mathematician. UPDATE: They fixed the website! And we got a photo of the pi wall! https://youtu.be/iW1MZWBZbQU Here is the value of "Vegas Pi": 3.14159265358979323846 1715364367892590360011 6892589235420199561121 968230301952035301852 Read all about the Sphere and science: https://www.thespherevegas.com/science Thanks to Linus Boman for the help! Check out their excellent videos: https://www.youtube.com/@LinusBoman Here is Linus’s post on…

What’s special about 288? – Numberphile

From Numberphile. Featuring Sophie Maclean and superfactorials. Try the Halfsies challenge at https://brilliant.org/challenge/numberphile (and tell us your score!) or go to Brilliant’s courses and start for free at https://brilliant.org/numberphile/ (episode sponsor) More links & stuff in full description below ↓↓↓ Sophie Maclean is based at Kings College, London: https://sophiethemathmo.wordpress.com More Sophie on Numberphile: https://bit.ly/Sophie_Numberphile Superpermutations:…

Faulhaber’s Fabulous Formula (and Bernoulli Numbers) – Numberphile

From Numberphile. Featuring Ellen Eischen from the University of Oregon. More links & stuff in full description below ↓↓↓ Ellen Eischen: http://www.elleneischen.com John Conway videos: https://bit.ly/ConwayNumberphile CORRECTION: Sum of the first 100 squares is 338350, not 1015050 as depicted. Sorry! Patreon: http://www.patreon.com/numberphile Numberphile is supported by Jane Street. Learn more about them (and exciting career…

The best A – A ≠ 0 paradox

From Mathologer. 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…

A needlessly complicated but awesome bridge.

From Standup Mathematician. The Einstein Hat Competition! https://momath.org/hatcontest/ Thanks to Jane Street for supporting this video. https://www.janestreet.com/join-jane-street/ Stan Wagon has written an article about all of the maths involved in the bridge: https://community.wolfram.com/groups/-/m/t/2917199 Designed by Thomas Randall-Page. https://www.thomasrandallpage.com/ Engineering by Alfred Jacquemot (then of Price & Myers). https://www.pricemyers.com/about-us/people/alfred-jacquemot You can ride the MoMath square-wheel bike…