Matrices with invariant by rotation numerical ranges
Michel Crouzeix
公開日: 2025/7/28
Abstract
We characterize the d x d matrices whose numerical ranges are invariant by rotations of angle 2$\pi$/d.
Michel Crouzeix
公開日: 2025/7/28
We characterize the d x d matrices whose numerical ranges are invariant by rotations of angle 2$\pi$/d.