  Nonlinear inequalities based on the quadratic Renyi entropy for mixed
two-qubit states are characterized on the Entropy-Concurrence plane. This class
of inequalities is stronger than Clauser-Horne-Shimony-Holt (CHSH) inequalities
and, in particular, are violated "in toto" by the set of Type I
Maximally-Entangled-Mixture States (MEMS I).
