Derivative bounded functional calculus of power bounded operators on Banach spaces

Abstract

In this article we study bounded operators T on Banach space X which satisfy the discrete Gomilko Shi-Feng condition ∫02π| R(reit,T)2x,x* |dt ≤ C(r2-1)xx*, r>1, x∈ X, x* ∈ X*. We show that it is equivalent to a certain derivative bounded functional calculus and also to a bounded functional calculus relative to Besov space. Also on Hilbert space discrete Gomilko Shi-Feng condition is equivalent to power-boundedness. Finally we discuss the last equivalence on general Banach space involving the concept of γ-boundedness.

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