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Monday
10
Mar 14
3:30 PM - 4:30 PM KAP 414
Stirring and Mixing
Gautam Iyer Carnegie Mellon

I will talk about various ``mixing'' questions that have attracted interest recently. For instance, ``Can you stir your coffee to keep it hot for longer'', or ``How well can you stir cream into your coffee, and at what cost?''.
Mathematically these questions translate into studying a negative Sobolev norm of a passively advected scalar. The study of such questions also involves very interesting connection Bressan's (still open!) rearrangement cost conjecture. I will spend most of the talk surveying recent results, and conclude with brief description of joint work with A. Kiselev, Xiaoqian Xu and myself.

Previous colloquium: Surfaces and fronts in periodic media Next colloquium: Efficient Performance Evaluation of the Generalized Shiryaev--Roberts Detection Procedure in the Multi-Cyclic Setup