Degeneracy in WT-spaces

DOI10.1016/0021-9045(84)90105-9zbMath0542.41019OpenAlexW2062077416MaRDI QIDQ795251

D. Zwick

Publication date: 1984

Published in: Journal of Approximation Theory (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/0021-9045(84)90105-9

zbMATH Keywords

WT-spaceWT-system

Mathematics Subject Classification ID

Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Spline approximation (41A15) Convexity of real functions in one variable, generalizations (26A51) Approximation by other special function classes (41A30)

Related Items (8)

Integral representation of Markov systems and the existence of adjoined functions for Haar spaces ⋮ Some aspects of best n-convex approximations ⋮ Integral representation of normalized weak Markov systems ⋮ Structure of weak Descartes systems ⋮ Characterization of WT-spaces whose derivatives form a WT-space ⋮ Some hereditary properties of WT-systems ⋮ The Chebyshev theory of a variation of \(L_ p(1<p<\infty)\) approximation ⋮ Relative differentiability and integral representation of a class of weak Markov systems

Cites Work

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• Discontinuous Cebysev systems
• On complete Tchebycheff-systems
• Properties of functions generalized convex with respect to a WT-system
• On the number of zeros of functions in a weak Tchebyshev-Space
• Eigenschaften von schwach tschebyscheffschen Räumen
• A characterization of Tchebycheff systems
• Characterization of generalized convex functions by their best approximation in sign-monotone norms
• Weak Chebyshev Subspaces and Continuous Selections for the Metric Projection

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