"Maximizers Beyond the Hemisphere for the Second Neumann Eigenvalue" by Jeffrey J. Langford and Richard Laugesen
 

Maximizers Beyond the Hemisphere for the Second Neumann Eigenvalue

Publication Date

2023

Description

The first positive Neumann eigenvalue of the Laplacian is shown to be maximal for a spherical cap among simply connected domains covering up to 94% of the 2-sphere. The previous best result, by Bandle, was 50%.

Journal

Mathematische Annalen

Volume

386

Issue

3-4

First Page

2255

Last Page

2281

Department

Mathematics

DOI

https://doi.org/10.1007/s00208-022-02455-z

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