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Title

The role of permutations in mixing phenomena

Abstract

In this talk I will present an approximation result of divergence-free vector fields in the unit square by permutation vector fields: namely, vector fields whose flow permutes the subsquares of a grid of [0,1]^2. I will describe a way to derive mixing phenomena starting from permutations, focusing both on weak and strong mixing.

Please note that the seminar will take place in person in room 140 of Huxley Building.

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