Eigenvalue collisions for periodic matrix families associated with Ginibre matrices

Carlos Vargas

We study, count and locate the exceptional points where eigenvalues collide for certain families of matrices $$R(s,t)=\cos (s\ddot{I}€/2)C+\sin (s\ddot{I}€/2)U(t),s,t\in [0,1]$$ wh…