Sharp lower bound estimates for the first positive eigenvalue and rigidity theorem for sub-Laplacian and Kohn Laplacian
讲座名称：
Sharp lower bound estimates for the first positive eigenvalue and rigidity theorem for sub-Laplacian and Kohn Laplacian
讲座时间：
2013-07-24
讲座人：
LI Songying
形式：
校区：
兴庆校区
实践学分：
讲座内容：
报告人:Prof.LI, Songying (UC Irvine, USA)
题目：Sharp lower bound estimates for the first positive eigenvalue and rigidity theorem for sub-Laplacian and Kohn Laplacian
时间：7月24日下午4:30---6:00
地点：理科楼407
摘要: In this talk, I will present the Lichnerowicz-Obata type theorems for the first positive eigenvalue of the Laplacian on Riemannian manifold. I will also present a joint work with X. Wang on the lower bound and the rigidity theorems of the first positive eigenvalue for sub-Laplacian; and a joint work with S. Duong and X. Wang on the fist positive eigenvalue for Kohn Laplacian on the pseudo-Hermitian manifolds.
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