Endpoint Estimates for Certain Singular Integrals with Non-smooth Kernels

Xueting Han, Xuejing Huo

Let $L$ be a closed, densely defined operator of type $\ddot{I}‰$ on $L^2({\mathbb{R}}^n)$ with $0\le \ddot{I}‰<\ddot{I}€/2$. We assume that $L$ possesses a bounded $H_{\infty }$-functional calcul…