A counterexample to Hedetniemi's conjecture - featuring Erica Klarreich.
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More links & stuff in full description below ↓↓↓
Read Erica Klarreich's Quanta article on this subject: [ Ссылка ]
And visit her website: [ Ссылка ]
Yaroslav Shitov's breakthrough paper: [ Ссылка ]
Thanks to Stephen Hedetniemi for providing us with photos and pages from his original dissertation.
Some more graph theory on Numberphile...
Four Color Maps: [ Ссылка ]
An Unsolved Problem: [ Ссылка ]
Planar Graphs: [ Ссылка ]
Perfect Graphs: [ Ссылка ]
Friends and Strangers: [ Ссылка ]
River Crossings: [ Ссылка ]
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