Reversed Hardy-Littlewood-Sobolev inequality on Heisenberg group ${\mathbb{H}}^n$ and CR sphere ${\mathbb{S}}^{2n+1}$

Yazhou Han, Shutao Zhang

This paper is mainly devoted to the study of the reversed Hardy-Littlewood-Sobolev (HLS) inequality on Heisenberg group ${\mathbb{H}}^n$ and CR sphere ${\mathbb{S}}^{2n+1}$. First, we…