1 citations · 1 across the 2 of their papers we have counts for
4 papers
The Fibonacci--Redheffer matrix and its properties
Aristides V. Doumas, Panayiotis J. Psarrakos
A Redheffer--type matrix with Fibonacci entries is defined, and the determinant and spectral properties of this matrix are studied. Also, more general Redheffer--type matrices are…
On the distance from a matrix polynomial to matrix polynomials with prescribed distinct eigenvalues
E. Kokabifar, G. B. Loghmani, P. J. Psarrakos +1
Consider an matrix polynomial and a set consisting of distinct complex numbers. In this paper, a (weighted) spectral norm distance from to t…
On condition numbers of polynomial eigenvalue problems with nonsingular leading coefficients
Nikolaos Papathanasiou, Panayiotis Psarrakos
In this paper, we investigate condition numbers of eigenvalue problems of matrix polynomials with nonsingular leading coefficients, generalizing classical results of matrix perturb…
On Pseudospectra of Matrix Polynomials and their Boundaries
Lyonell Boulton, Peter Lancaster, Panayiotis Psarrakos
In the first part of this paper, the main concern is with smoothness properties of the boundary of the pseudospectrum of a matrix polynomial. In the second part, results are obtain…