We consider particles transport in the Sinai billiard with infinite horizon. The simulation shows that the transport is superdiffusive in both continuous and discrete time. Also, it is shown that the moments do not converge ...

In this paper, we introduce the concept of αα -normal subgroup of a finite group G, where αα is an automorphism of G. We also introduce the concept of absolute normal subgroup and investigate all absolute normal subgroups of some groups...