Math: Grigori Perelman videos

Perm URL with updates: http://xahlee.org/math/Grigori_Perelman.html

you are looking at a guy who solved a million-dollar math problem but turned it down.

Grigori Perelman in shopping market
Grigori Perelman walking on street
Grigori Perelman on subway
Grigori Perelman on subway

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