[專題演講] 【改為線上】 【4月13日】國立屏東大學應用數學系 吳進通教授

Speaker:吳進通教授 (國立屏東大學應用數學系)

Title: First eigenvalue estimates in pseudo-hermitian geometry

Abstract: In this talk, I will talk about how to get a sharp lower bound estimate for the first nonzero eigenvalue of the sub-Laplacian, Kohn Laplacian, Folland-Stein operator, weighted sub-Laplacian and weighted Kohn Laplacian on a closed strictly pseudo-convex CR (2n+1)-manifold. We also discuss the case when a sharp lower bound estimate of the sub-Laplacian, Kohn Laplacian, weighted sub-Laplacian or weighted Kohn Laplacian is achieved. It can be showed that such a manifold is isometric to the standard CR (2n+1)-sphere.

Date: Wednesday, April 13, 2022

Time: 14:00-15:00

Venue: on line

https://meet.google.com/efr-qeqb-vmf

友善列印

Close Menu