A note on second order Riesz transforms in 3-dimensional Lie groups
Fabrice Baudoin, Li Chen·2020-03-22·via math.PR updates on arXiv.org
We prove explicit $L^p$ bounds for second order Riesz transforms of the sub-Laplacian in the Lie groups $\mathbb H$, $\mathbb{SU}(2)$ and $\mathbb{SL}(2)$