Envelopes, widths, and Landau problems for analytic functions

DOI10.1007/BF01889605zbMath0671.41016OpenAlexW2087965277MaRDI QIDQ1119850

Stephen D. Fisher

Publication date: 1989

Published in: Constructive Approximation (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01889605

zbMATH Keywords

Blaschke productenvelopeKolmogorov n-width

Mathematics Subject Classification ID

Approximation by arbitrary nonlinear expressions; widths and entropy (41A46)

Related Items (1)

Comparison theorems of Kolmogorov type and exact values of 𝑛-widths on Hardy–Sobolev classes

Cites Work

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• A holomorphic version of Landau's theorem
• The n-width of sets of analytic functions
• The boundary values of analytic and harmonic functions
• An Extremal Problem for Analytic Functions With Prescribed Zeros and rth Derivative in H ∞
• Some Theorems on Bounded Analytic Functions

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