Peaceable Queens - Numberphile A Colorful Unsolved Problem - Numberphile 3 months ago   07:21

Numberphile
Neil Sloane discusses peaceable queens and chess. Check out Brilliant (get 20% off their premium service): https://brilliant.org/numberphile (sponsor)
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Learn more at the OEIS entry (loads of links): https://oeis.org/A250000

References:
Ainley, Stephen. Mathematical Puzzles. London: G Bell & Sons, 1977.
Yukun Yao and Doron Zeilberger, Numerical and Symbolic Studies of the Peaceable Queens Problem, https://arxiv.org/abs/1902.05886

Other notable work by Michael De Vlieger, Benoit Jubin, Peter Karpov, Don Knuth, Rob Pratt, Bob Selcoe, Paul Tabatabai.

More Numberphile videos with Neil Sloane: http://bit.ly/Sloane_Numberphile

More chess-related videos: http://bit.ly/chess_numberphile

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A Colorful Unsolved Problem - Numberphile Peaceable Queens - Numberphile 3 months ago   09:39

James Grime on the Hadwiger–Nelson problem.
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Extra footage from this interview: https://up-tube.com/upvideo/7aOgEXiHbk4

The Four Color Map Theorem: https://up-tube.com/upvideo/AtoX43wO4eD

More on James Grime (you can book him for talks): http://singingbanana.com

More James Grime videos: http://bit.ly/grimevideos

The de Grey paper: https://arxiv.org/abs/1804.02385

A good write up on this topic via Quanta Magazine: https://www.quantamagazine.org/decades-old-graph-problem-yields-to-amateur-mathematician-20180417/

The Marijn Heule counterexample: http://www.cs.utexas.edu/users/marijn/CNP/553.png

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 the process of science. https://www.simonsfoundation.org/outreach/science-sandbox/

And support from Math For America - https://www.mathforamerica.org/

NUMBERPHILE
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Numberphile tweets: https://twitter.com/numberphile
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Videos by Brady Haran

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Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/

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