The numerical range of a product. II

DOI10.1016/0022-247X(71)90193-4zbMath0211.44401OpenAlexW4205112078MaRDI QIDQ2544295

Richard Bouldin

Publication date: 1971

Published in: Journal of Mathematical Analysis and Applications (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/0022-247x(71)90193-4

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Numerical range, numerical radius (47A12) Perturbation theory of linear operators (47A55)

Related Items (18)

On numerical range and numerical radius of convex function operators ⋮ Commutativity ofC*-algebras and associativity ofJB*-algebras ⋮ Numerical range submultiplicity ⋮ Domaine numérique du produit et de la bimultiplication 𝑀_{2,𝐴,𝐵} ⋮ Estimations of the numerical index of a JB*-triple ⋮ Nonsurjective numerical radius isometries between matrix algebras ⋮ Phases of sectorial operators ⋮ On a theorem of Bouldin ⋮ Characterizations of commutativity forC*-algebras ⋮ The spectrum of the product of operators, and the product of their numerical ranges ⋮ Comparison of direct and perturbation approaches to analysis of infinite-dimensional feedback control systems ⋮ Numerical Range for Certain Classes of Operators ⋮ A note on norm estimates of the numerical radius ⋮ Geometrical properties of the product of a \(C^*\)-algebra ⋮ Numerical ranges of products and tensor products ⋮ Numerical radius inequality for \(C_0\) contractions ⋮ The numerical range of a product. II ⋮ Polynomials in a matrix and its commutant

Cites Work

• Similarity and the numerical range
• The numerical range of a product. II
• Multiplicative properties of the numerical radius in operator theory.
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