WEAKLY SUBNORMAL WEIGHTED SHIFTS NEED NOT BE 2-HYPONORMAL

DOI10.11568/kjm.2015.23.1.199zbMath1439.47019OpenAlexW2032072000MaRDI QIDQ5217015

Jongrak Lee

Publication date: 21 February 2020

Published in: Korean Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.11568/kjm.2015.23.1.199

zbMATH Keywords

subnormal\(k\)-hyponormalpartially normal extensionweakly subnormal

Mathematics Subject Classification ID

Several-variable operator theory (spectral, Fredholm, etc.) (47A13) Subnormal operators, hyponormal operators, etc. (47B20) Linear operators on special spaces (weighted shifts, operators on sequence spaces, etc.) (47B37)

Cites Work

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• Quadratically hyponormal weighted shifts
• Towards a model theory for 2-hyponormal operators.
• A characterization of \(k\)-hyponormality via weak subnormality.
• Subnormal operators
• A new criterion for $k$-hyponormality via weak subnormality