Coupling, spectral gap and related topics. II
The author summarizes some general facts about the theory of the Laplace operator on Riemannian manifolds and gives a lower bound for the spectral gap. Connections with other well-known sharp estimates are also nicely discussed. [For Part I see ibid., No. 16, 1321-1326 (1997; Zbl 0892.58078, see above)].
scientific article; zbMATH DE number 1106395
scientific article