scientific article; zbMATH DE number 1973964

zbMath1019.47005MaRDI QIDQ4422056

Pei Yuan Wu, Mao-Ting Chien, Shu-Hsien Tso

Publication date: 2 September 2003

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

Hilbert spacesingular numbersquadratic operatoridempotent operator\(k\)-numerical rangesquare-zero operator

Mathematics Subject Classification ID

Norms of matrices, numerical range, applications of functional analysis to matrix theory (15A60) Numerical range, numerical radius (47A12)

Related Items (2)

Higher dimensional numerical range of Lie products on self-adjoint operators ⋮ Elliptical range theorems for generalized numerical ranges of quadratic operators

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