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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.RA2007
Further results on the Craig-Sakamoto equation
John Maroulas
In this paper necessary and sufficient conditions are stated for the Craig-Sakamoto equation det(I-sA-tB) = det(I-sA)det(I-tB), for all scalars s, t. Moreover, spectral properties…