The quasiapproximate \((\mathcal U + \mathcal K)\)-invariants of essentially normal operators

DOI10.1007/S00020-003-1226-ZzbMath1079.47022OpenAlexW2028138247MaRDI QIDQ1764254

You Qing Ji, Jue Xian Li

Publication date: 24 February 2005

Published in: Integral Equations and Operator Theory (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s00020-003-1226-z

zbMATH Keywords

Hilbert spaceBergmann operatorCowen-Douglas operatoressentially normal operatorquasiapproximate \((\mathcal U + \mathcal K)\)-equivalenceunilateral weighted operator

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Subnormal operators, hyponormal operators, etc. (47B20) Structure theory of linear operators (47A65) General theory of linear operators (47A99)

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