English

A Derivative-Hilbert operator Acting on Dirichlet spaces

Functional Analysis 2022-07-19 v1

Abstract

Let μ\mu be a positive Borel measure on the interval [0,1)[0,1). The Hankel matrix Hμ=(μn,k)n,k0\mathcal{H}_{\mu}=(\mu_{n,k})_{n,k\geq 0} with entries μn,k=μn+k\mu_{n,k}=\mu_{n+k}, where μn=[0,1)tndμ(t)\mu_{n}=\int_{[0,1)}t^nd\mu(t), induces formally the operator as DHμ(f)(z)=n=0(k=0μn,kak)(n+1)zn,zD,\mathcal{DH}_\mu(f)(z)=\sum_{n=0}^\infty\left(\sum_{k=0}^\infty \mu_{n,k}a_k\right)(n+1)z^n , z\in \mathbb{D}, where f(z)=n=0anznf(z)=\sum_{n=0}^{\infty}a_nz^n is an analytic function in D\mathbb{D}. In this paper, we characterize those positive Borel measures on [0,1)[0, 1) for which DHμ\mathcal{DH}_\mu is bounded (resp. compact) from Dirichlet spaces Dα(0<α2)\mathcal{D}_\alpha ( 0<\alpha\leq2 ) into Dβ(2β<4)\mathcal{D}_\beta ( 2\leq\beta<4 ).

Keywords

Cite

@article{arxiv.2207.08368,
  title  = {A Derivative-Hilbert operator Acting on Dirichlet spaces},
  author = {Yun Xu and Shanli Ye and Zhihui Zhou},
  journal= {arXiv preprint arXiv:2207.08368},
  year   = {2022}
}
R2 v1 2026-06-25T00:59:42.628Z