Random perturbations of the hyperbolic systems and
quasisimilarity of deterministic and nondeterministic systems
Anatoly Vershik
Abstract. Theory of Markov (or manyvaled) maps or polymorphisms
can be considered as extension of ergodic theory and deterministic
dynamics. The most of interest and new effect here is the exsitence
of the polymorphisms which are nondeterministic perturbations of
K-(or hyperbolic) systems and in the same time, are quasisimilar
to unperturbed deterministic systems. These are very special as
random perturbations, however as polymorphisms they are generic.