On a Conjecture of Ashbaugh and Benguria about Lower Eigenvalues of the Neumann Laplacian
arXiv:1808.09520
Abstract
In this paper, we prove an isoperimetric inequality for lower order eigenvalues of the free membrane problem on bounded domains of a Euclidean space or a hyperbolic space which strengthens the well-known Szegö-Weinberger inequality and supports strongly an important conjecture of Ashbaugh-Benguria.
arXiv comment16 pages