On the lack of directional quasiconcavity of the fundamental mode in the clamped membrane problem
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Publication:651394
DOI10.1007/s00013-011-0308-4zbMath1233.35149OpenAlexW1971957527MaRDI QIDQ651394
Publication date: 13 December 2011
Published in: Archiv der Mathematik (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1007/s00013-011-0308-4
Boundary value problems for second-order elliptic equations (35J25) Estimates of eigenvalues in context of PDEs (35P15) Membranes (74K15)
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