Spectrum where the boundary of the numerical range is not round

DOI10.1216/RMJM/1181072150zbMath0865.47002OpenAlexW2021439567MaRDI QIDQ1915727

Matthias Hübner

Publication date: 1 July 1996

Published in: Rocky Mountain Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1216/rmjm/1181072150

zbMATH Keywords

numerical rangebounded linear operatorboundary pointsinfinite curvatureconvex boundary curve

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12)

Related Items (5)

On non-round points of the boundary of the numerical range and an application to non-selfadjoint Schrödinger operators ⋮ On a conjecture of Hübner ⋮ Signatures of quantum phase transitions from the boundary of the numerical range ⋮ On the non-round points of the boundary of the numerical range^∗ ⋮ Normal essential eigenvalues in the boundary of the numerical range

Cites Work

• On the numerical range of a bounded operator
• Über den numerischen Wertebereich eines Operators
• Similarity and the numerical range

This page was built for publication: Spectrum where the boundary of the numerical range is not round