Remarks on hyponormal Toeplitz operators with nonharmonic symbols

Abstract

In this article, we present some necessary or sufficient conditions for the hyponormality of Toeplitz operator

on the Bergman space

A 2 ( D ) {A}^{2}\left({\mathbb{D}})

. In particular, we consider the Toeplitz operator

T φ {T}_{\varphi }

with nonharmonic symbols

φ \varphi

under certain assumptions.