Tentacles Akimbo (with Cliff Stoll) – Numberphile

From Numberphile. Cliff Stoll and glass-blown topology – interview continues at https://youtu.be/Iv71QEId4ck — We’re uploading Cliff videos like this for the next three Sundays. (with other stuff during the week!) More links & stuff in full description below ↓↓↓ More videos with Cliff: http://bit.ly/Cliff_Videos Cliff Stoll’s Klein Bottle business: https://www.kleinbottle.com Our thanks to glass blower…

Pentagons and the Golden Ratio – Numberphile

From Numberphile. Continuing on from Zvezda’s previous video about Ptolemey’s Theorem (see: https://youtu.be/bJOuzqu3MUQ) now we use it to prove some cool stuff with pentagons and equilateral triangles. More links & stuff in full description below ↓↓↓ Zvezda’s Numberphile playlist: http://bit.ly/zvezda_videos Zvezda’s webpage: https://math.berkeley.edu/~stankova/ Golden Ratio: https://youtu.be/sj8Sg8qnjOg Epic Circles: https://youtu.be/sG_6nlMZ8f4 Triangle Magic Highway: https://youtu.be/wVH4MS6v23U Numberphile is…

A Miraculous Proof (Ptolemy’s Theorem) – Numberphile

From Numberphile. Featuring Zvezdelina Stankova… Want more? Part 2 (bringing in Pentagons and the Golden Ratio) is at: https://youtu.be/o3QBgkQi_HA More links & stuff in full description below ↓↓↓ Zvezda’s Numberphile playlist: http://bit.ly/zvezda_videos Zvezda’s webpage: https://math.berkeley.edu/~stankova/ Epic Circles: https://youtu.be/sG_6nlMZ8f4 Triangle Magic Highway: https://youtu.be/wVH4MS6v23U Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are…

Russian Multiplication – Numberphile

From Numberphile. Johnny Ball on Russian and Egyptian Multiplication. Check out Brilliant (get 20% off their premium service): https://brilliant.org/numberphile (sponsor) More links & stuff in full description below ↓↓↓ More on Johnny Ball, including his books and live shows: https://www.johnnyball.co.uk Russian multiplication is also known as Ethiopian multiplication. Why Use Binary? (on Computerphile) – https://youtu.be/thrx3SBEpL8…

Superhero Triangles – Numberphile

From Numberphile. Heronian triangles and other fascinating things, featuring Dr James Grime. Get your Superhero Triangle T-Shirt and other stuff: http://bit.ly/Super_Tri More links & stuff in full description below ↓↓↓ More videos with Dr Grime: http://bit.ly/grimevideos Dr James Grime: https://www.singingbanana.com PAPERS: A unique pair of triangles – https://arxiv.org/abs/1809.09936 Heronian Triangles Whose Areas Are Integer Multiples…

A Prime Surprise (Mertens Conjecture) – Numberphile

From Numberphile. Dr Holly Krieger discusses Merterns’ Conjecture. Check out Brilliant (get 20% off their premium service): https://brilliant.org/numberphile (sponsor) More links & stuff in full description below ↓↓↓ More videos with Holly (playlist): http://bit.ly/HollyKrieger Dr Holly Krieger is the Corfield Lecturer at the University of Cambridge and a Fellow at Murray Edwards College: https://www.dpmms.cam.ac.uk/~hk439/ On…

Colouring Numbers – Numberphile

From Numberphile. Fields Medallist Sir Timothy Gowers discusses Van der Waerden’s theorem. Interview continues on Numberphile2 at: https://youtu.be/hHIfJcwipAY More links & stuff in full description below ↓↓↓ Timothy Gowers website: https://gowers.wordpress.com And his Twitter: https://twitter.com/wtgowers Podcast with Timothy Gowers: https://youtu.be/Pxsac9ZM9us The Fields Medal (with Cédric Villani): https://youtu.be/Vp3sgYKULp0 Numberphile is supported by the Mathematical Sciences Research…

A New Discovery about Dodecahedrons – Numberphile

From Numberphile. Featuring Jayadev Athreya on a new discovery about platonic solids, in particular dodecahedra… Extra footage: https://youtu.be/hpNPPqm1EMc Yellow Brick Road Sticker and T-Shirts: https://teespring.com/yellow-brick-numberphile More links & stuff in full description below ↓↓↓ PAPER: A Trajectory from a Vertex to Itself on the Dodecahedron: https://arxiv.org/abs/1802.00811 PAPER: Platonic solids and high genus covers of lattice…

Counting Outtakes (from our Pi Million video) – Numberphile

From Numberphile. These are outtakes from the main video at: https://youtu.be/__UlMppZZgs Who’s Who based on the main video: https://www.numberphile.com/pi-million More links & stuff in full description below ↓↓↓ 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…

Pi Million Subscribers – Numberphile

From Numberphile. Outtakes: https://youtu.be/Wrj1Kl6CHIQ Who’s Who in the video: https://www.numberphile.com/pi-million More links & stuff in full description below ↓↓↓ Patreon: http://www.patreon.com/numberphile Numberphile T-Shirts: https://teespring.com/stores/numberphile 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.…

A Breakthrough in Graph Theory – Numberphile

From Numberphile. A counterexample to Hedetniemi’s conjecture – featuring Erica Klarreich. Get 3 months of Audible for just $6.95 a month. Visit https://www.audible.com/numberphile or text "numberphile" to 500 500 More links & stuff in full description below ↓↓↓ Read Erica Klarreich’s Quanta article on this subject: https://www.quantamagazine.org/mathematician-disproves-hedetniemis-graph-theory-conjecture-20190617/ And visit her website: http://www.ericaklarreich.com/ Yaroslav Shitov’s breakthrough…

A Fascinating Thing about Fractions – Numberphile

From Numberphile. The Dynamical Uniform Boundedness Conjecture with Dr Holly Krieger. Extra from this interview: https://youtu.be/v4LWFzTyhpU Dr Krieger on the Numberphile Podcast: https://youtu.be/QmfQQzjpdpM More links & stuff in full description below ↓↓↓ More videos with Holly: http://bit.ly/HollyKrieger Holly’s website: https://www.dpmms.cam.ac.uk/~hk439/ She is the Corfield Lecturer at the University of Cambridge as well as a Fellow…

Approximating Irrational Numbers (Duffin-Schaeffer Conjecture) – Numberphile

From Numberphile. James Maynard recently co-authored a proof of the Duffin-Schaeffer Conjecture. More links & stuff in full description below ↓↓↓ More James Maynard on Numberphile: http://bit.ly/JamesMaynard On the Duffin-Schaeffer conjecture – by Dimitris Koukoulopoulos and James Maynard – https://arxiv.org/abs/1907.04593 Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported…

Taking a Turkey’s Temperature – Numberphile

From Numberphile. A Thanksgiving special featuring Cliff Stoll. Check out Brilliant (get 20% off their premium service): https://brilliant.org/numberphile (sponsor) More links & stuff in full description below ↓↓↓ More videos with Cliff: http://bit.ly/Cliff_Videos 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…

The Archimedes Number – Numberphile

From Numberphile. Archimedes’s famous Cattle Problem had a truly epic solution. Featuring Alex Bellos. More links & stuff in full description below ↓↓↓ Alex Bellos: http://www.alexbellos.com More Alex videos on Numberphile: http://bit.ly/Bellos_Playlist So You Think You’ve Got Problems by Alex Bellos Amazon: https://amzn.to/2KR9Get Signed copies via MathsGear:http://bit.ly/BellosProblemsSigned More Alex books: https://amzn.to/2KQTc5Y The Cattle Problem by…