Closed Range and Essential Norms of Composition Operators on Weighted Dirichlet Spaces

Caixing Gu, Li He, Xiaofeng Wang +1

We study closed range and essential norms of bounded composition operators $C_{\phi }$ on weighted Dirichlet spaces ${\mathcal{D}}_{\alpha }$. For $-1<\alpha <0$, we first consider maps whose images are…