Korovkin approximation in Waelbroeck algebras

DOI10.1007/BF01457226zbMath0576.41014OpenAlexW2016750368MaRDI QIDQ1065302

Michael Pannenberg

Publication date: 1986

Published in: Mathematische Annalen (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/164109

zbMATH Keywords

Choquet boundariesWaelbroeck algebraspectral contractionuniversal Korovkin closureuniversal Korovkin system

Mathematics Subject Classification ID

Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Approximation by positive operators (41A36)

Related Items

A characterization of C(X) among algebras on planar sets by the existence of a finite universal Korovkin system ⋮ Positive operators on tensor products which are the tensor product of their restrictions ⋮ A counterexample in Korovkin theory ⋮ On universal Korovkin sets w. r. t positive spectral contractions ⋮ On existence of finite universal Korovkin sets in Segal algebras ⋮ Some remarks on spectral states of LMC-algebras ⋮ On existence of finite universal Korovkin sets in the centre of group algebras ⋮ Finite universal Korovkin systems in tensor products of commutative Banach algebras ⋮ The Gleason-Kahane-Zelazko property and Korovkin systems in symmetric involutive Banach algebras ⋮ Approximate regularity of commutative Beurling algebras and Korovkin approximation ⋮ Unnamed Item ⋮ A characterization of a class of locally compact abelian groups via Korovkin theory

Cites Work

• On the universal convergence sets
• Geometric theory of Korovkin sets
• Extreme spectral states of commutative Banach algebras
• Topological vector spaces and algebras
• When is a Linear Functional Multiplicative?
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