Applied Math And Analysis Seminar
Wednesday, September 12, 2018, 12:00pm, Physics 119
Andrej Zlatos (University of California-San Diego)
On Universal Mixers

Abstract:

The problem of mixing via incompressible flows is classical and rich with connections to several branches of analysis including PDE, ergodic theory, and topological dynamics. In this talk I will discuss some recent developments in the area and then present a construction of universal mixers - incompressible flows that asymptotically mix arbitrarily well general solutions to the corresponding transport equation - in all dimensions. This mixing is in fact exponential in time (i.e., essentially optimal) for any initial condition with at least some degree of regularity, while there exists no uniform mixing rate for all measurable initial conditions. [video]

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