Title of article
Schur product of matrices and numerical radius (range) preserving maps Original Research Article
Author/Authors
Chi-Kwong Li، نويسنده , , Edward Poon، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
17
From page
8
To page
24
Abstract
Let F(A) be the numerical range or the numerical radius of a square matrix A. Denote by A ring operator B the Schur product of two matrices A and B. Characterizations are given for mappings on square matrices satisfying F(A ring operator B) = F(phi(A) ring operator phi(B)) for all matrices A and B. Analogous results are obtained for mappings on Hermitian matrices.
Keywords
Numerical radius , Schur product , Numerical range
Journal title
Linear Algebra and its Applications
Serial Year
2007
Journal title
Linear Algebra and its Applications
Record number
825594
Link To Document