A counterexample in Korovkin theory

DOI10.1007/BF02844644zbMath0674.46031WikidataQ124858356 ScholiaQ124858356MaRDI QIDQ1121491

Ferdinand Beckhoff

Publication date: 1988

Published in: Rendiconti del Circolo Matemàtico di Palermo. Serie II (Search for Journal in Brave)

zbMATH Keywords

Korovkin closuresnon-commutative \(C^*\)-algebras

Mathematics Subject Classification ID

General theory of (C^*)-algebras (46L05) Approximation by positive operators (41A36)

Cites Work

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• On the universal convergence sets
• Korovkin approximation in Waelbroeck algebras
• Korovkin's theorems for C*-algebras
• A discrete integral representation for polynomials of fixed maximal degree and their universal Korovkin closure.
• Korovkin theory in normed algebras

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