CRAMP
发表于 2025-4-1 05:26:18
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TIGER
发表于 2025-4-1 08:25:58
Beate Bahnerroblems for eigenvalues.Includes supplementary material: .Problems linking the shape of a domain or the coefficients of an elliptic operator to the sequence of its eigenvalues are among the most fascinating of mathematical analysis. In this book, we focus on extremal problems. For instance, we look
欢腾
发表于 2025-4-1 11:56:34
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