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Linear Dynamics of Multiplication and Composition Operators on \(\textrm{Hol}(\mathbb {D})\)

  • L. Oger

摘要

We give a complete description of the linear dynamics of multiplication \(M_m\) M m and composition operators \(C_\varphi \) C φ on the space \(\textrm{Hol}(\mathbb {D})\) Hol ( D ) of all holomorphic maps on the unit disc. We show that \(M_m\) M m is never supercyclic, and cyclic if and only if the map m is injective. For composition operators, we prove that if \(\varphi \) φ has a fixed point in \(\mathbb {D}\) D , then \(C_\varphi \) C φ is either not cyclic, or cyclic but not supercyclic on \(\textrm{Hol}(\mathbb {D})\) Hol ( D ) . On the other hand, if \(\varphi \) φ does not have any fixed point in the unit disc, then \(C_\varphi \) C φ is hypercyclic on \(\textrm{Hol}(\mathbb {D})\) Hol ( D ) . We provide explicit expressions of cyclic and hypercyclic vectors. Finally, we make some observations on weighted composition operators on \(\textrm{Hol}(\mathbb {D})\) Hol ( D ) .