Composition operators between de Branges-Rovnyak and Hardy spaces

Evgueni Doubtsov, Andrei V. Vasin

Let $d\ge 1$ and $\ddot{I}†:B_d\to \mathbb{D}$ be a holomorphic function, where $B_d$ denotes the open unit ball of ${\mathbb{C}}^d$ and $\mathbb{D}=B_1$. Let $b: \mathbb{D} \to \mathbb{D…