Abel universal functions

Given a sequence rho = (r(n))(n) is an element of [0,1) tending to 1, we consider the set U-A(D, rho) of Abel universal functions consisting of holomorphic functions f in the open unit disk D such that for any compact set K included in the unit circle T, different from T, the set {z ? f (r(n)center dot)|(K) : n is an element of N} is dense in the space C(K) of continuous functions on K. It is known that the set U-A(D, rho) is residual in H(D). We prove that it does not coincide with any other classical sets of universal holomorphic functions. In particular, it is not even comparable in terms of inclusion to the set of holomorphic functions whose Taylor polynomials at 0 are dense in C(K) for any compact set K subset of T different from T. Moreover, we prove that the class of Abel universal functions is not invariant under the action of the differentiation operator. Finally, an Abel universal function can be viewed as a universal vector of the sequence of dilation operators T-n : f ? f (r(n)center dot) acting on H(D). Thus, we study the dynamical properties of (T-n)(n) such as the multiuniversality and the (common) frequent universality. All the proofs are constructive.