Entropy Numbers of Quadratic Forms and Their Applications to Spectral Theory

DOI10.1007/978-3-0348-0263-5_14zbMath1255.47005OpenAlexW2198221869MaRDI QIDQ2914475

Hans Triebel

Publication date: 20 September 2012

Published in: Spectral Theory, Function Spaces and Inequalities (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/978-3-0348-0263-5_14

zbMATH Keywords

quadratic formsentropy numbersdegenerate elliptic operatorsdistribution of eigenvalues

Mathematics Subject Classification ID

Sobolev spaces and other spaces of ``smooth functions, embedding theorems, trace theorems (46E35) Estimates of eigenvalues in context of PDEs (35P15) Riesz operators; eigenvalue distributions; approximation numbers, (s)-numbers, Kolmogorov numbers, entropy numbers, etc. of operators (47B06) General theory of partial differential operators (47F05) Approximation by arbitrary nonlinear expressions; widths and entropy (41A46) Forms (bilinear, sesquilinear, multilinear) (47A07)

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Entropy and approximation numbers of embeddings of weighted Sobolev spaces

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