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

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.

💡 Research Summary

This paper studies weighted composition operators on the family of weighted Dirichlet spaces (D_s) for (0<s<1). The spaces are defined by the norm \