  The time evolution of galaxy cluster abundance is used to constrain
cosmological parameters in dark matter models containing a fraction of hot
particles (massive neutrino). We test the modified MDM models with cosmic
gravitational waves which are in agreement with observational data at $z=0$,
and show that they do not pass the cluster evolution test and therefore should
be ruled out. The models with a non-zero cosmological constant are in better
agreement with the evolution test. We estimate $\Omega_\Lambda$ and find that
it is strongly affected by a small fraction of hot dark matter: $0.4
<\Omega_\Lambda <0.8$ for $\Omega_H /\Omega_M <0.2$.
