In this paper we contribute to the generic theory of Hamiltonians by proving
that there is a C2-residual R in the set of C2 Hamiltonians on a closed
symplectic manifold M, such that, for any H in R, there is a full measure
subset of energies e in H(M) such that the Hamiltonian level (H,e) is
topologically mixing; moreover these level sets are homoclinic classes.Comment: 14 pages, 1 figure. This version is a major revision of the previous
one, including corrections flaws in some proof and adding more general
result