Seminars & Colloquia Calendar
" Extremal functions for Morrey’s inequality in convex domains"
Ryan Hynd, MIT and University of Pennsylvania
Location: HILL 705
Date & time: Tuesday, 25 April 2017 at 1:40PM -
|Time: 1:40 PM|
|Location: Hill 705|
|Abstract: A celebrated result in the theory of Sobolev spaces is Morrey's inequality, which establishes the continuous embedding of the continuous functions in certain Sobolev spaces. Interestingly enough the equality case of this inequality has not been thoroughly investigated (unless the underlying domain is R^n). We show that if the underlying domain is a bounded convex domain, then the extremal functions are determined up to a multiplicative factor. We will explain why the assertion is false if convexity is dropped and why convexity is not necessary for this result to hold.
This is joint work with Erik Lindgren of KTH.