2-complex symmetric composition operators on $H^2$

Abstract

In this paper, we study 2-complex symmetric composition operators with the conjugation $J$ on the Hardy space $H^2$. More precisely, we obtain the necessary and sufficient condition for the composition operator $C_{\varphi }$ to be 2-complex symmetric when the symbols $\varphi$ is an automorphism of $\mathbb{D}$. We also characterize the 2-complex symmetric composition operator $C_{\varphi }$ on the Hardy space $H^2$ when $\varphi$ is a linear fractional self-map of $\mathbb{D}$.

13 pages