J. Maroulas

activity

20072011

most citedInvestigating the Numerical Range of Non Square Matrices

2 citations · 4 across the 4 of their papers we have counts for

collaborators

Showing 2011Show all

2 papers · 1 filter

math.RA2011★ 2 cited

The higher rank numerical range of matrix polynomials

Aikaterini Aretaki, John Maroulas

The notion of the higher rank numerical range $Λ_{k} (L (λ))$ for matrix polynomials $L (λ) = A_{m} λ^{m} + ... + A_{1} λ + A_{0}$ is introduced here and some fundamental geometrical properties…

math.FA2011

The k-rank numerical radii

Aikaterini Aretaki, John Maroulas

The $k$ -rank numerical range $Λ_{k} (A)$ is expressed via an intersection of a countable family of numerical ranges ${F (M_{ν}^{*} A M_{ν})}_{ν \in N}$ with respect to $n\times (n…