2 citations · 4 across the 3 of their papers we have counts for
3 papers
math.RA2011★ 2 cited
The higher rank numerical range of matrix polynomials
Aikaterini Aretaki, John Maroulas
The notion of the higher rank numerical range for matrix polynomials is introduced here and some fundamental geometrical properties…
math.RA2011
The higher rank numerical range of nonnegative matrices
Aikaterini Aretaki, John Maroulas
In this article the well known "Perron-Frobenius theory" is investigated involving the higher rank numerical range of an irreducible and entrywise nonnegative matrix …
math.FA2009★ 2 cited
Investigating the Numerical Range of Non Square Matrices
Aikaterini Aretaki, John Maroulas
A presentation of numerical range for rectangular matrices is undertaken in this paper, introducing two different definitions and elaborating basic properties. Then we are extended…