We calculated pi with colliding blocks

From Standup Mathematician. Happy Pi Day 2025 everyone! Check out Grant’s new 3blue1brown video: https://youtu.be/6dTyOl1fmDo?si=k0az9B4pEOnRXbIh Oh look, it’s Steve’s excellent channel: https://www.youtube.com/stevemould Sign up for future pi-by-hand videos: https://forms.gle/w44THpNJ3jWUPqHy6 Massive thanks to Hugh Hunt and everyone in the University of Cambridge Department of Engineering, particularly the legends in the workshop. https://www.eng.cam.ac.uk/profiles/hemh1 Huge thanks to my…

Mathematicians finally find the infinite card game.

From Standup Mathematician. More details about Jane Street’s AMP: https://jane-st.co/SUM-AMP25 Support me on Patreon and join in whatever thing I do next. https://www.patreon.com/standupmaths Please help me thank Mithuna for enduring all of that. Go check out her excellent physics channel: https://www.youtube.com/@LookingGlassUniverse Here is the main paper: A Non-Terminating Game of Beggar-My-Neighbor https://arxiv.org/abs/2403.13855 Huge thanks to…

Golf balls: how many holes in one?

From Standup Mathematician. Get your metal wall plates here! https://displate.com/@standup Use discount code STANDUP for: 1 or 2 Displates = 26% off, ≥3 Displates = 30% off (normal plates only, not Limited Editon, Lumino, Textra) Thanks to Henry Segerman and the Dice Lab for talking dimples and spheres: https://www.youtube.com/@UC4zzTEL5tuIgGMvzjk1Ozbg Check out The Dice Lab: https://www.mathartfun.com/DiceLabDice.html…

Can I 3D print a minimal infinite surface?

From Standup Mathematician. Check out the fantastic range of Bambu Labs 3D printers: https://bit.ly/SUM-bambu #bambulab #bambulabA1 #bambulabp1s #bambulabs Dan Piker on Mathstodon: https://mathstodon.xyz/@Danpiker/112858419960150896 Print file of Dan’s gyroid. It is a snug fit, maybe add a few extra percent. From: https://mathstodon.xyz/@Danpiker/112859215840044255 Previous pencil video: Costa surface print file I used by osj1961 (Joe Fields) https://www.thingiverse.com/thing:2882581…

I walked the length of a state (ish)

From Standup Mathematician. Join me on the medium seas, 7-10 November: https://stemconatsea.com/STANDUP Boundary Stones of the District of Columbia https://boundarystones.org/ Rectangular States and Kinky Borders https://mathtourist.blogspot.com/2007/08/rectangular-states-and-kinky-borders.html?m=1 "Chart showing the original boundary milestones of the District of Columbia." Fred E. Woodward, 1906. Geography and Map Division, Library of Congress. https://blogs.loc.gov/maps/2017/05/modest-monuments-the-district-of-columbia-boundary-stones/ Huge thanks to my Patreon supporters.…

18 mathematicians break my secret santa method

From Standup Mathematician. Learn more about Jane Street’s internship opportunities: https://jane-st.co/SUM-internships Sign up to patreon to get a unique christmas card! https://www.patreon.com/standupmaths A Mathematical Secret Santa Protocol by Katie Steckles https://www.youtube.com/watch?v=ehRTbNIr6-E This is the math stackexchange discussion: https://math.stackexchange.com/a/2896914 The Problems with Secret Santa, Hannah fry on Numberphile. https://www.youtube.com/watch?v=5kC5k5QBqcc Thanks to everyone who took part! Here…

Can the “Red Mirage” and “Blue Shift” be explained with math? ELECTION 2024

From Standup Mathematician. Here is the full MIT Election Data and Science Lab report: https://electionlab.mit.edu/sites/default/files/2021-04/Blue-Shift-in-2020-Election.pdf University of Florida’s Election Lab early voting stats. https://election.lab.ufl.edu/early-vote/2024-early-voting/ Trump quotes from the 2020 election night are 01:09 to 01:20 and 07:31 to 08:22 from this video: https://www.youtube.com/watch?v=YlmaKdbC6ZM&ab_channel=ABCNews CNN have a great timeline of what will happen when: https://edition.cnn.com/2024/11/02/politics/how-election-night-will-unfold-hour-by-hour/index.html I…

How on Earth does ^.?$|^(..+?)1+$ produce primes?

From Standup Mathematician. Take your personal data back with Incogni! Use code standupmaths at the link below and get 60% off an annual plan: https://incogni.com/standupmaths ^.?$|^(..+?)1+$ Props will be for sale here: https://www.ebay.co.uk/usr/standupmaths Fantastic blog post by Illya Gerasymchuk. "Demystifying The Regular Expression That Checks If A Number Is Prime" https://illya.sh/the-codeumentary-blog/regular-expression-check-if-number-is-prime/ Thanks to everyone who…

What do we know about Asteroid 314159 aka ‘Mattparker’?

From Standup Mathematician. Order Love Triangle now and get a personalised gift tag! https://achievefulfilment.onwarehouse.app/preorders/new?campaign_id=wng5c4y Or just get a copy with no gift tag. You’ll receive it a bit faster. https://achievefulfilment.onwarehouse.app/preorders/new?campaign_id=yx6gcky There is a small chance we still have limited-edition covers left. You can check here: https://achievefulfilment.onwarehouse.app/preorders/new?campaign_id=w7qzcxw Thanks to everyone who bought the USA edition! You…

New largest prime number found! See all 41,024,320 digits.

From Standup Mathematician. 2^136,279,841 – 1 has 41,024,320 digits and is prime! Read all about the new largest prime number ever found: https://www.mersenne.org/primes/?press=M136279841 Huge thanks to Luke Durant, George Woltman and everyone at the Great Internet Mersenne Prime Search. Get involve in the search for large primes! https://www.mersenne.org/ This is the breakdown of the maths…

How can a jigsaw have two distinct solutions?

From Standup Mathematician. Learn more about Jane Street’s internship opportunities: https://jane-st.co/SUM-internships Check out Steve’s video: https://youtu.be/FMRi6pNAoag This is Ryan’s Diffusion Illusions site: https://diffusionillusions.com And here is the full “Diffusion Illusions: Hiding Images in Plain Sight” paper by Ryan Burgert, Xiang Li, Abe Leite, Kanchana Ranasinghe and Michael S. Ryoo. https://diffusionillusions.com/assets/diffusion_illusions.pdf Download of the jigsaw: https://www.dropbox.com/scl/fi/rennmoqgzjdup5uof7qna/jigsaw_jumbled.pdf?rlkey=u4v18cwbvut672hqx895tqga0&dl=0…

The unexpected probability result confusing everyone

From Standup Mathematician. Secure your privacy with Surfshark! Enter coupon code standupmaths for an extra 4 months free at https://surfshark.com/standupmaths Thanks to Dylan from Seattle for sending this amazing maths fact to me. You can see an archive of their ChatGPT conversation here: https://chatgpt.com/share/00ed003b-8be6-4756-92b3-de91454ab3f2 Thanks to Grant from 3blue1brown for putting actual work aside and…

Are accurate election predictions luck or skill?

From Standup Mathematician. Go to https://ground.news/standup for a data-driven, objective way to stay fully informed on the issues most important to you. Save 40% on the Ground News unlimited access Vantage plan with my link. Thanks to Jop Schaap for analysing how lucky I was. See their report here: https://www.dropbox.com/scl/fi/yrzp0z3r2u4dgistmtor1/Lucky_predictions_Jop_Schaap.pdf?rlkey=c0ctkocele9sso7kh46y73kcp&dl=0 If you’d like to see…

The Bingo Paradox: 3× more likely to win

From Standup Mathematician. Details on where you can buy Love Triangle in the USA: https://bit.ly/3wCTesR Or if you just want it from Amazon, this is my affiliate link: https://amzn.to/4fy30Ph For people in Europe, signed UK copies are still available on Maths Gear: https://mathsgear.co.uk/products/love-triangle-by-matt-parker-signed The box set you should not buy: https://achievefulfilment.onwarehouse.app/preorders/new?campaign_id=ymgvcjy Paul Catherall shop: https://www.paulcatherall.com/shop/…

The search for the biggest shape in the universe.

From Standup Mathematician. Love Triangle sweepstakes are open until Monday August 19th: https://sites.prh.com/love-triangle-sweepstakes Details on where you can pre-order/buy Love Triangle: https://bit.ly/3wCTesR Or if you just want it from Amazon, this is my affiliate link: https://amzn.to/4fy30Ph For people in Europe, signed UK copies are still available on Maths Gear: https://mathsgear.co.uk/products/love-triangle-by-matt-parker-signed “Search For Largest Polyhedra” by…