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arXiv · 2505.02397

Frequently hypercyclic composition operators on the little Lipschitz space of a rooted tree

Antoni López-Martínez
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Abstract

We characterize the strictly increasing symbols $\varphi:\mathbb{N}_0\longrightarrow\mathbb{N}_0$ whose composition operators $C_{\varphi}$ satisfy the Frequent Hypercyclicity Criterion on the little Lipschitz space $\mathcal{L}_0(\mathbb{N}_0)$. With this result we continue the recent research about this kind of spaces and operators, but our approach relies on establishing a natural isomorphism between the Lipschitz-type spaces over rooted trees and the classical spaces $\ell^{\infty}$ and $c_0$. Such isomorphism provides an alternative framework that simplifies and allows to improve many previous results about these spaces and the operators defined there.

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Antoni López-Martínez. 2025-05-05. Frequently hypercyclic composition operators on the little Lipschitz space of a rooted tree. https://doi.org/10.1007/s00009-026-03075-6

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