Asymptotic behavior of a sequence defined by iteration with applications

We consider the asymptotic behavior of some classes of sequences defined by a recurrent formula. The main result is the following: Let f : (0,1) 2 ! (0,1) be a continuous function such that (a) 0 0; (b) f(x,y) = px + (1 p)y P1=m Ks(x,y)