Homogeneous operators on Hilbert spaces of holomorphic functions

In this paper we construct a large class of multiplication operators on reproducing kernel Hilbert spaces which are homogeneous with respect to the action of the Möbius group consisting of bi-holomorphic automorphisms of the unit disc D. Indeed, this class consists of exactly those operators for which the associated unitary representation of the universal covering group of the Möbius group is multiplicity free. For every m ∈ N we have a family of operators depending on m + 1 positive real parameters. The kernel function is calculated explicitly. It is proved that each of these operators is bounded, lies in the Cowen–Douglas class of D and is irreducible. These operators are shown to be mutually pairwise unitarily inequivalent. © 2008 Elsevier Inc. All rights reserved