Some properties of analytic maps of operators inJ *-algebras

Abstract

HereJ*-algebras are considered, i.e. linear spaces of operators mapping one complex Hilbert space into another, which have a kind of Jordan triple product structure. Balls are determined which contain the sets of values of functionalsf(S) (S any fixed operator) defined on the classes of (Frechet-)holomorphic mapsf of the unit ball into the generalized upper half-plane and of the unit ball into the unit ball, respectively (see Theorems 1 and 2). Similar results were obtained for holomorphic maps of operators in the sense of functional calculus (see Theorems 3–5).