Speaker: Sergey Galkin

Title: Bartender's guide to wandering drunkards

Date: March 12, 2013, 18:30-20:00

Place: MIPT's DM seminar at Moscow, L'va Tolstogo 16, Yandex, "7 wonders"

It turns that some pairs of random walks in dimensionmore than one are indistinguishable from the point of view of a bartender (an observer in a fixed point). Such random walks are obtained by mutations of each other, and geometrically correspond to special birational transformations of a torus. In dimension two any three equivalent in this sense mutations yield infinitely many others. Also all this story has a meaningful and interesting lift to a quantum torus.