The multi-parameter Hausdorff operators on $H^1$ and $L^p$
In the present paper, we characterize the nonnegative functions $φ$ for which the multi-parameter Hausdorff operator $\mathcal H_φ$ generated by $φ$ is bounded on the multi-parameter Hardy space $H^1(\mathbb R\times\cdots\times\mathbb R)$ or $L^p(\mathbb R^n)$, $p\in [1,\infty]$. The corresponding operator norms are also obtained. Our results improve some recent results in \cite{FZ, LM2, LM3, We} and give an answer to an open question posted by Liflyand \cite{Li}.
math.CA↗