DOIAbstract
AbstractThe smallest rectangle containing the numerical range of a real matrix is determined
AbstractThe smallest rectangle containing the numerical range of a real matrix is determined
[[abstract]]Let and denote respectively the space of n×n complex matrices and the real space of n×...
AbstractWe investigate the shape of the numerical range. A criterion for the numerical range of a ma...
A presentation of numerical ranges for rectangular matrices is undertaken in this paper, introducing...
Bonsall and Duncan (1973) observed that the numerical range of a bounded linear operator can be writ...
For a bounded linear operator A (or, in the finite dimensional setting, an n-by-n matrix A) its clas...
In this paper, we collect a few fairly well known facts about the nu-merical range and assemble them...
The numerical range of a matrix is a set of complex numbers that contains all the eigen- values of t...
We study the relationship between operators and their numerical ranges. The main results are as foll...
We study the relationship between operators and their numerical ranges. The main results are as foll...
We study the relationship between operators and their numerical ranges. The main results are as foll...
Abstract. This is an introduction to the notion of numerical range for bounded linear operators on H...
AbstractThe c-numerical range of a rank one matrix is explicitly described. Its proof is approached ...
Copyright c © 2014 Yu Ogasawara and Hiroshi Nakazato. This is an open access article distributed und...
AbstractNecessary and sufficient conditions are given for the C-numerical range of a matrix A to be ...
The block numerical range (BNR) of a block operator matrix is a generalization of the numerical rang...
[[abstract]]Let and denote respectively the space of n×n complex matrices and the real space of n×...
AbstractWe investigate the shape of the numerical range. A criterion for the numerical range of a ma...
A presentation of numerical ranges for rectangular matrices is undertaken in this paper, introducing...
Bonsall and Duncan (1973) observed that the numerical range of a bounded linear operator can be writ...
For a bounded linear operator A (or, in the finite dimensional setting, an n-by-n matrix A) its clas...
In this paper, we collect a few fairly well known facts about the nu-merical range and assemble them...
The numerical range of a matrix is a set of complex numbers that contains all the eigen- values of t...
We study the relationship between operators and their numerical ranges. The main results are as foll...
We study the relationship between operators and their numerical ranges. The main results are as foll...
We study the relationship between operators and their numerical ranges. The main results are as foll...
Abstract. This is an introduction to the notion of numerical range for bounded linear operators on H...
AbstractThe c-numerical range of a rank one matrix is explicitly described. Its proof is approached ...
Copyright c © 2014 Yu Ogasawara and Hiroshi Nakazato. This is an open access article distributed und...
AbstractNecessary and sufficient conditions are given for the C-numerical range of a matrix A to be ...
The block numerical range (BNR) of a block operator matrix is a generalization of the numerical rang...
[[abstract]]Let and denote respectively the space of n×n complex matrices and the real space of n×...
AbstractWe investigate the shape of the numerical range. A criterion for the numerical range of a ma...
A presentation of numerical ranges for rectangular matrices is undertaken in this paper, introducing...
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