A sharp estimate for Neumann eigenvalues of the Laplace-Beltrami operator for domains in a hemisphere

Benguria, RD; Brandolini, B; Chiacchio, F

COMMUNICATIONS IN CONTEMPORARY MATHEMATICS, 2020; 22 (3):

Abstract

Here, we prove an isoperimetric inequality for the harmonic mean of the first N- 1 nontrivial Neumann eigenvalues of the Laplace-Beltrami operator for......

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