The First Eigenvalue of the Laplacian for Plane Domains
- 1 February 1981
- journal article
- Published by JSTOR in Proceedings of the American Mathematical Society
- Vol. 81 (2) , 304-305
- https://doi.org/10.2307/2044213
Abstract
We prove an improved lower bound for the first eigenvalue of the Laplacian of a connected plane domain in terms of its inradius and connectivity.Keywords
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