Results 211 to 220 of about 63,539 (239)

Linear operators that preserve thec-numerical range or radius of matrices

Linear and Multilinear Algebra, 1988
Let For any n × n matrix A, define the c-numerical range and the c-numerical radius by and rc (A) = max{|z|: z∈ W c (A)} respectively. We give a characterization for those linear operators Twhich satisfy for all matrix A. Moreover, we give a full description for the extreme points of the unit ball in the real linear space of n × n hermitian matrices ...
Chi-Kwong Li, Nam-Kiu Tsing
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Duality between some linear preservers problems: the invariance of thec-numerical range, thec-numerical radius and certain matrix sets

Linear and Multilinear Algebra, 1988
Let C be a hermitian matrix. We show that the C-numerical range or C-numerical radius preservers are actually the dual operators of some matrix set preservers. We use the known results about the C-numerical range preservers to determine the structure of their dual operators.
Chi-Kwong Li, Nam-Kiu Tsing
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Weighted numerical range and weighted numerical radius for even-order tensor via Einstein product

Rendiconti del Circolo Matematico di Palermo Series 2
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Aaisha Be, Debasisha Mishra
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The invarianee ofC-numerical rangeC-numericai radius, and their dual problems

Linear and Multilinear Algebra, 1991
Let C be an n×n normal matrix. Let For any n×n matrix A, define the C-numerical range and the C-numerical radius of A by and respectively. We give a characierizaiion for those linear operators T which satisfy one of the following properties: .
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Numerical Ranges and Numerical Radius of Truncated Toeplitz Operators in the Case u = zn

International Journal of Mathematics Trends and Technology, 2023
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Spectral Radius, Numerical Range

2022
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ON NUMERICAL RANGE AND NUMERICAL RADIUS OF A SPECIAL PAIR OPERATOR MATRICES

Advances in Mathematics: Scientific Journal, 2020
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The proton charge radius

Reviews of Modern Physics, 2022
Haiyan Gao, Marc Vanderhaeghen
exaly  

The coordination properties and ionic radius of actinium: A 120-year-old enigma

Coordination Chemistry Reviews, 2021
Gauthier J-P Deblonde, Mavrik Zavarin, Annie B Kersting   +2 more
exaly  

Numerical range, abscissa, and radius

2020
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