Заседание семинара кафедры высшей математики и математической физики состоится 31 марта (среда) в 18-30.

Докладчик: Jeffrey Galkowski (University College London)

Тема: Geodesic beams and Weyl remainders

Абстракт:
In this talk we discuss quantitative improvements for Weyl remainders under dynamical assumptions on the geodesic flow. We consider a variety of Weyl type remainders including asymptotics for the eigenvalue counting function as well as for the on and off diagonal spectral projector. These improvements are obtained by combining the geodesic beam approach to understanding eigenfunction concentration together with an appropriate decomposition of the spectral projector into quasimodes for the Laplacian. One striking consequence of these estimates is a quantitatively improved Weyl remainder on all product manifolds. This is joint work with Y.Canzani.

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https://us02web.zoom.us/j/2709505573?pwd=dGZtbU9OaWVuWnVOVkk1Tm9kVXlrdz09

Meeting ID: 270 950 5573
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