• Let G(s) have full row normal rank. Then z0Î C is a transmission
zero if and only if there exists a vector h0¹ 0 such that h0*G(z0)=0.
• Suppose z0Î C is not a pole of G(s). Then z0 is a transmission zero if and only if
rank(G(z0)) < normalrank(G(s)).
• Let G(s) be a square m×m matrix and detG(s)¹0.
Suppose
z0Î C is not a pole of G(s). Then z0 is a transmission zero if and only if detG(z0) = 0.