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Proof of the l2l2 decoupling conjecture

Presenter
May 6, 2014
Abstract
Ciprian Demeter Indiana University We prove the l2l2 Decoupling Conjecture for hypersurfaces with nonvanishing Gaussian curvature in the expected range of LpLp spaces. This has a wide range of important consequences. One of them is the validity of the Discrete Restriction Conjecture, which in turn implies the full range of expected Lpx,tLx,tp Strichartz estimates for both classical and irrational tori. Another one is an improvement in the range for the discrete restriction theory for lattice points on the sphere. Various connections with Incidence Geometry and Number Theory are also discussed. This is joint work with Jean Bourgain.