数学物理学报(英文版) ›› 1996, Vol. 16 ›› Issue (4): 388-392.
徐森林, 陈春生, 张华明, 陈广华
Xu Senlin, Chen Chunsheng, Zhang Huaming, Chen Guanghua
摘要: This paper is concerning with the estimate of the first eigenvalue of hyper surface embedded in a compact manifolds with positive Ricci curvature.It leads to an upper bound of area of compact Riemannian surface embedded in S3. Secondly,spectral isomorphic problem is discussed.