An elementary proof of the oscillation lemma for weak Markov systems

DOI10.1016/0021-9045(89)90160-3zbMath0707.41033OpenAlexW2057684108WikidataQ124802394 ScholiaQ124802394MaRDI QIDQ919558

Friedhelm Schwenker, Roland Zielke

Publication date: 1989

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

Full work available at URL: https://doi.org/10.1016/0021-9045(89)90160-3

zbMATH Keywords

alternation Markov spacealternation space

Mathematics Subject Classification ID

Best approximation, Chebyshev systems (41A50) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Uniqueness of best approximation (41A52)

Related Items (2)

Integral representation of normalized weak Markov systems ⋮ Oscillation spaces

Cites Work

• Characterization of WT-spaces whose derivatives form a WT-space
• Relative differentiability and integral representation of a class of weak Markov systems
• Discontinuous Cebysev systems

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