quadratic numerical range;
companion matrix;
zeros of polynomials;
D O I:
10.1137/S0895479802411651
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
Containment regions for the zeros of a monic polynomial are given with the aid of the quadratic numerical range of different types of companion matrices of the polynomial.