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Recommended course: Advanced Geometry Puzzles https://brilliant.org/courses/advance...

Mathematica Notebook and animations can be found at the bottom of Dan Romik's page
https://www.math.ucdavis.edu/~romik/m...

And more here by Simon Mackenzie
https://drive.google.com/drive/u/3/fo...

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A big thank you to my AMAZING PATRONS!
Jonathan Koppelman, Michael Seydel, Cy 'kkm' K'Nelson, Thorsten Auth, Chris Flynn, Tim Barnard, AndrewA, Izzy Ca, Millennial Glacier, Richard O McEwen Jr, Scott Ready, John H. Austin, Jr., Brian Wilkins, Thomas V Lohmeier, David Johnston, Thomas Krause, Lynn Shackelford, Ave Eva Thornton, Andrew Pann, Anne Tan, David Tuman, Richard Rensman, Larry Nixon, Ben Mitchell, Steve Archer, Luna, Viktor Lazarevich, Tyler Simms, Michael Geer, James Mahoney, Jim Felich, Fabio Manzini, Jeremy, Sam Richardson, Robin High, KiYun Roe, Christopher Rhoades, DONALD McLeod, Ron Hochsprung, Aria Bend, James Matheson, Kevin Anderson, Alexander230, Tim Ludwig, Alexander Del Toro Barba, Justin Smith, A. Duncan, Mark Littlehale, Tony T Flores, Dagmawi Elehu, Jeffrey Smith, Alex Hackman, bpatb, Paul Barclay, 12tone, Sergey Ten, Damien Holloway, John Lakeman, Jana Christine Saout, Jeff Schwarz, Yana Chernobilsky, Louis Mashado, Michael Dean, Chris Amaris, Matt G, Dag-Erling Smørgrav, John Shioli, Todd Loreman, Susan Jones, Antony Birch, Paul Bunbury, Kent Arimura, Phillip Rhodes, Michael Nugent, James N Smith, Roland Gibson, Joe McTee, Dean Fantastic, Bernard Pang, Oleg Dats, John Spalding, Simon J. Dodd, Tang Chun, Michelle, William Toffey, Michel Speiser, Rigid Designator, James Horsley, Brian Williams, Craig Tumblison, Cameron Tacklind, 之元 丁, Kevin Chi, Lance Ahmu, Tim Cheseborough, Markus Lindström, Steve Watson, Midnight Skeptic, Dexter Scott, Potch, Indrajeet Sagar, Markus Herrmann (trekkie22), Gil Chesterton, Alipasha Sadri, Pablo de Caffe, Taylor Hornby, Mark Fisher, Emily, Colin Byrne, Nick H, Jesper de Jong, Loren Hart, Sofia Fredriksson, Phat Hoang, Spuddy, Sascha Bohemia, tesseract, Stephen Britt, KG, Hansjuerg Widmer, John Sigwald, O C, Carlos Gonzalez, Res, Thomas Kägi, James Palermo, Chris Teubert, Fran, Christopher Milton, Robert J Frey, Wolfgang Ripken, Jeremy Bowkett, Vincent Karpinski, Nicolas Frias, Louis M, kadhonn, Moose Thompson, Rick DeWitt, Andrew, Pedro Paulo Vezza Campos, S, Rebecca Lashua, Pat Gunn, George Fletcher, RobF, Vincent Seguin, Shawn, Israel Shirk, Jesse Clark, Steven Wheeler, Philip Freeman, Jareth Arnold, Simon Barker, Lou, and Simon Dargaville.

Chapters
0:00 The Moving Sofa Problem
2:06 Hammersley's sofa
3:15 Gerver's Sofa
3:55 Why is it so hard?
5:34 How Gerver came up with his sofa
9:50 Thank you Brilliant!
11:23 Will you find a bigger sofa?



Creator - Jade Tan-Holmes
Script - Alexander Berkes
Animations - Daniel Kouts and Simon Mackenzie
Music - epidemicsound.com