Numerical range and Berezin range of weighted composition operators on weighted Dirichlet spaces

Read full text
Authors: Somdatta Barik, Anirban Sen, Kallol Paul
Cited by: 0

Abstract

We investigate the numerical ranges of weighted composition operators on weighted Dirichlet spaces, focusing on the properties of the inducing functions. We identify conditions on these functions under which the origin lies in the interior of the numerical range. The geometric structure of the numerical range is also analyzed, determining when it contains a circular or elliptical disc and computing the corresponding radius. Next, we introduce a class of Weyl-type weighted composition operators and obtain their Berezin range and Berezin number. Finally, we characterize the convexity of the Berezin range for weighted composition operators on these spaces.

Fields of Study & Subjects

Holomorphic and Operator Theory Advanced Operator Algebra Research Spectral Theory in Mathematical Physics

Publication details

Journal / source
arXiv (Cornell University)
Publication date
10 February 2026
Language
EN
Document type
Preprint