Faber–Krahn inequalities in sharp quantitative form
Faber–Krahn inequalities in sharp quantitative form
复制标题
尖锐定量形式的 Faber-Krahn 不等式
DOI:
10.1215/00127094-3120167
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发表时间:
2013
影响因子:
2.5
通讯作者:
B. Velichkov
中科院分区:
文献类型:
--
作者:
L. Brasco;G. Philippis;B. Velichkov
The classical Faber-Krahn inequality asserts that balls (uniquely) minimize the first eigenvalue of the Dirichlet-Laplacian among sets with given volume. In this paper we prove a sharp quantitative enhancement of this result, thus confirming a conjecture by Nadirashvili and Bhattacharya-Weitsman. More generally, the result applies to every optimal Poincare-Sobolev constant for the embeddings $W^{1,2}_0(\Omega)\hookrightarrow L^q(\Omega)$.