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 $(D_{\hat{I}}¸,\hat{I}{´}_1,\hat{I}{´}_{2,3})$-Calderón-Zygmund operator…