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Graduate Students Geometry and Analysis Seminar

Event Type
Seminar/Symposium
Sponsor
Department of Mathematics
Location
Henry Admin Building 143
Date
Sep 15, 2023   2:00 pm  
Speaker
Ryan McConnell
Contact
Hanna Kim
E-Mail
nekim2@illinois.edu
Views
1
Originating Calendar
Graduate Student Seminars in Mathematics

Title: Strichartz Inequalities on Compact Manifolds

Abstract: Strichartz inequalities on Rn follow from a simple dispersion estimate and interpolation, and are optimal. The story changes dramatically on compact domains, where such an estimate can never hold. However, it is a great triumph of Bourgain that intermediate estimates hold at all on the Torus, and the ideas behind his proofs have been a driving force behind much of modern Harmonic Analysis. In this talk we will discuss the case of an arbitrary compact manifold without boundary and develop lossy-Strichartz estimates that somehow end up being sharp on certain manifolds (like the sphere!). This talk is a sequel to a prior talk I gave but won't require any knowledge of the other. Strichartz inequalities on Rn follow from a simple dispersion estimate and interpolation, and are optimal. The story changes dramatically on compact domains, where such an estimate can never hold. However, it is a great triumph of Bourgain that intermediate estimates hold at all on the Torus, and the ideas behind his proofs have been a driving force behind much of modern Harmonic Analysis. In this talk we will discuss the case of an arbitrary compact manifold without boundary and develop lossy-Strichartz estimates that somehow end up being sharp on certain manifolds (like the sphere!). This talk is a sequel to a prior talk I gave but won't require any knowledge of the other.

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