English

Complex symmetry of composition operators on weighted Bergman spaces

Functional Analysis 2025-06-30 v1

Abstract

In this article, we study the complex symmetry of compositions operators Cϕf=fϕC_{\phi}f=f\circ \phi induced on weighted Bergman spaces Aβ2(D), β1,A^2_{\beta}(\mathbb{D}),\ \beta\geq -1, by analytic self-maps of the unit disk. One of ours main results shows that ϕ\phi has a fixed point in D\mathbb{D} whenever CϕC_{\phi} is complex symmetric. Our works establishes a strong relation between complex symmetry and cyclicity. By assuming βN\beta\in \mathbb{N} and ϕ\phi is an elliptic automorphism of D\mathbb{D} which not a rotation, we show that CϕC_{\phi} is not complex symmetric whenever ϕ\phi has order greater than 2(3+β).2(3+\beta).

Keywords

Cite

@article{arxiv.2002.07288,
  title  = {Complex symmetry of composition operators on weighted Bergman spaces},
  author = {Osmar R. Severiano},
  journal= {arXiv preprint arXiv:2002.07288},
  year   = {2025}
}