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Billiard on nilmanifolds and other stories

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If you have a question about this talk, please contact Yonatan Gutman.

The subject grew out of a math olympiad problem: The prez and an assassin are in a room with reflecting walls. Assassin’s bullets would hit the prez even after any number of ricochets off the walls. As a result, the assassin has at his disposal an infinitely many deadly possibilities. The presidential security detail instantaneously position themselves at spots where they will intercept optimal subsets of deadly bullets. Can a finite number of security guards protect the prez?

I will talk about mathematical ramifications of this question

This talk is part of the Discrete Analysis Seminar series.

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