A compact $T1$ theorem for Calderón-Zygmund operators associated with Zygmund dilations

Mingming Cao, Jiao Chen, Zhengyang Li +3

We develop a compact version of $T1$ theorem for singular integrals of Zygmund type on ${\mathbb{R}}^3$. More specifically, if a $(D_{\theta },{\delta }_1,{\delta }_{2,3})$-Calderón-Zygmund operator $T$…