Hi everyone,
I have a square matrix J \in \mathbb{C}^{2n \times 2n} where,
$J=\left(\begin{array}{cc}A&B\\\bar{B}&\bar{A}\end{array}\right)$
A \in \mathbb{C}^{n \times n} and its conjugate \bar{A} are diagonal.Assume the submatrices A,B \in \mathbb{C}^{n \times n} are constructed in a way...