Volterra-type operators mapping weighted Dirichlet space into $H^{\infty }$

Abstract

The problem of describing the analytic functions $g$ on the unit disc such that the integral operator $T_g(f)(z)={\int }_0^{z}f(\zeta )g^{\prime }(\zeta )d\zeta$ is bounded (or compact) from a Banach space (or complete metric space) $X$ of analytic functions to the Hardy space $H^{\infty }$ is a tough problem and remains unsettled in many cases. For analytic functions $g$ with non-negative Maclaurin coefficients, we describe the boundedness and compactness of $T_g$ acting from a weighted Dirichlet space $D_{\omega }^p$, induced by an upper doubling weight $\omega$, to $H^{\infty }$. We also characterize, in terms of neat conditions on $\omega$, the upper doubling weights for which $T_g:D_{\omega }^p\to H^{\infty }$ is bounded (or compact) only if $g$ is constant.