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Friday
24
Oct 08
3:30 PM - 4:30 PM KAP 249
Adding Numbers and Shuffling Cards
Persi Diaconis Stanford

The usual process of "carries" when adding numbers turns out to have interesting mathematics hidden in it. It begins with an "amazing" matrix discovered by Holte, which has close connections to the usual way of mixing cards by riffle shuffling. The connections give new results for addition and for shuffling. This is joint work with Jason Fulman.

Previous colloquium: The random matrix technique of ghosts and shadows Next colloquium: Invisibility and Inverse Problems