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math.FA2026

Commutants of composition operators on function spaces of several complex variables

Frédéric Bayart, Maofa Wang, Xingxing Yao

This paper is devoted to an in-depth study of the minimal commutant property for composition operators acting on Hilbert spaces of holomorphic functions in several complex variable…

math.FA2026

On the dynamics of composition operators: supercyclicity, odometers and translations

Frédéric Bayart, Etienne Matheron

We study the dynamical properties of composition operators acting on Banach spaces of measurable functions. In particular, we study in some detail the composition operators induced…

math.FA2026

Composition operators on weighted Bergman spaces of the polydisc

Frédéric Bayart, Anne Dorval

We study composition operators between weighted Bergman spaces of the polydisc induced by smooth symbols. We prove a general result of continuity which only involves the behaviour…

math.FA2025

Approximation numbers of differences of composition operators

Frédéric Bayart, Clifford Gilmore, Sibel Sahin

In this study we consider the approximation numbers of differences of composition operators acting on the Hardy-Hilbert space H 2 (D). We obtain both upper and lower bounds for the…

math.FA2024

Königs maps and commutants of composition operators on the Hardy-Hilbert space of Dirichlet series

Frédéric Bayart, Xingxing Yao

Let be a holomorphic map which is a symbol of a bounded composition operator acting on the Hardy-Hilbert space of Dirichlet series. We find a Königs map for . We t…