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Junior Colloquium: Noise-Induced Stabilization of Planar Flows

Prof. David Herzog, Duke University

Abstract: With broad interests in mind, we discuss certain, explosive ODEs in the plane that become stable under the addition of noise. In each equation, the process by which stabilization occurs is intuitively clear: Noise diverts the solution away from any instabilities in the underlyingODE. However, in many cases, proving rigorously this phenomenon occurs has thus far been difficult and the current methods used to do so are rather ad hoc. Here we present a general, novel approach to showing stabilization bynoise and apply it to these examples. We will see that the methods used streamline existing arguments as well as produce optimal results, in the sense that they allow us to understand well the asymptotic behavior of theequilibrium measure at infinity.

Where

Ayres Hall

Room 405
1403 Circle Drive
Knoxville, TN 37996

When

Thursday, 03 October, 2013

Who to contact

Contact:

Phone: 974-2463