Sunday, 25 August 2013

matrix $X$ such that for any matrix $Y$, $det(X^2 + Y^2) \geq 0$?

matrix $X$ such that for any matrix $Y$, $det(X^2 + Y^2) \geq 0$?

What is the characterization of (complex) matrices $X$ such that for any
real matrix $Y$, $det(X^2 + Y^2) \geq 0$ ?

No comments:

Post a Comment