AbstractThe problem of the existence of a J-normal matrix A when its spectrum and the spectrum of some of its (n-1)×(n-1) principal submatrices are prescribed is analyzed. The case of 3×3 matrices is particularly investigated. The results here obtained in the framework of indefinite inner product spaces are in the spirit of those due to Nylen, Tam and Uhlig
AbstractWe show that a unitary upper Hessenberg matrix with positive subdiagonal elements is uniquel...
AbstractSome new sufficient conditions are found for n real numbers to be the spectrum of some n × n...
AbstractLet A be an n×n complex-valued matrix, all of whose principal minors are distinct from zero....
AbstractThe problem of the existence of a J-normal matrix A when its spectrum and the spectrum of so...
Ikramov KD, Elsner L. On normal matrices with normal principal submatrices. Journal of Mathematical ...
AbstractLet A be an n×n nonnegative matrix with the spectrum (λ1,λ2,…,λn) and let A1 be an m×m princ...
AbstractLet A be a normal matrix, v be any of its indices, A-v be the matrix obtained from A by dele...
AbstractWe study classes of matrices defined by various normality properties with respect to an inde...
We study classes of matrices defined by various normality properties with respect to an indefinite (...
AbstractA quasi-Jacobi form for J-unitarily diagonalizable J-normal matrices is given, extending a r...
Abstract. Polynomially normal matrices in real indefinite inner product spaces are studied, i.e., ma...
AbstractIn this paper, we study the extension properties of a bounded linear transformation from a s...
AbstractIf N is normal and invertible, the matrices A with N∗AN = ϱA for various ϱ span all matrices...
AbstractIn this paper we characterize all nxn matrices whose spectral radius equals their spectral n...
Abstract. Explicit relations between eigenvalues, eigenmatrix entries and matrix elements are derive...
AbstractWe show that a unitary upper Hessenberg matrix with positive subdiagonal elements is uniquel...
AbstractSome new sufficient conditions are found for n real numbers to be the spectrum of some n × n...
AbstractLet A be an n×n complex-valued matrix, all of whose principal minors are distinct from zero....
AbstractThe problem of the existence of a J-normal matrix A when its spectrum and the spectrum of so...
Ikramov KD, Elsner L. On normal matrices with normal principal submatrices. Journal of Mathematical ...
AbstractLet A be an n×n nonnegative matrix with the spectrum (λ1,λ2,…,λn) and let A1 be an m×m princ...
AbstractLet A be a normal matrix, v be any of its indices, A-v be the matrix obtained from A by dele...
AbstractWe study classes of matrices defined by various normality properties with respect to an inde...
We study classes of matrices defined by various normality properties with respect to an indefinite (...
AbstractA quasi-Jacobi form for J-unitarily diagonalizable J-normal matrices is given, extending a r...
Abstract. Polynomially normal matrices in real indefinite inner product spaces are studied, i.e., ma...
AbstractIn this paper, we study the extension properties of a bounded linear transformation from a s...
AbstractIf N is normal and invertible, the matrices A with N∗AN = ϱA for various ϱ span all matrices...
AbstractIn this paper we characterize all nxn matrices whose spectral radius equals their spectral n...
Abstract. Explicit relations between eigenvalues, eigenmatrix entries and matrix elements are derive...
AbstractWe show that a unitary upper Hessenberg matrix with positive subdiagonal elements is uniquel...
AbstractSome new sufficient conditions are found for n real numbers to be the spectrum of some n × n...
AbstractLet A be an n×n complex-valued matrix, all of whose principal minors are distinct from zero....
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