q-RADIUS STABILITY OF MATRIX POLYNOMIALS
Y. Jahanshahi, B. Yousefi · International Journal of Pure and Apllied Mathematics · 2014
In this paper, the q-radius stability of a matrix polynomial P (λ) relative to an open region Ω of the complex plane and its relation to the q-numerical range of P (λ) are investigated.Also, we obtain a lower bound that involves the distance of Ω to the connected components of the q-numerical range of P (λ).