A Weak-Star Rational Approximation Problem Connected with Subnormal Operators

DOI10.2307/2048165zbMath0684.30031OpenAlexW4250672989MaRDI QIDQ4734076

James J. Dudziak

Publication date: 1989

Full work available at URL: https://doi.org/10.2307/2048165

zbMATH Keywords

rational approximationsubnormal operator

Mathematics Subject Classification ID

Subnormal operators, hyponormal operators, etc. (47B20) Approximation in the complex plane (30E10) Approximation by rational functions (41A20) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Commutative Banach algebras and commutative topological algebras (46J99)

Related Items (1)

Towards a Functional Calculus for Subnormal Tuples: The Minimal Normal Extension

Cites Work

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• The minimal normal extension problem for subnormal operators
• A Stone-Weierstrass theorem for weak-star approximation by rational functions
• A functional calculus for subnormal operators. II

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