Ⅰ. INTRODUCTIONSuppose Ω is a convex domain with piecewise smooth boundary on a 2-dimensional sphere with radius R. Let λ<sub>1</sub>（Ω）be the first eigenvalue of the Laplacian with
基金Project supported by the National Natural Science Foundation of China.
文摘Ⅰ. INTRODUCTIONSuppose Ω is a convex domain with piecewise smooth boundary on a 2-dimensional sphere with radius R. Let λ<sub>1</sub>（Ω）be the first eigenvalue of the Laplacian with
