Products and Commutators of Martingales in $H_1$ and $\mathrm{BMO}$

Aline Bonami, Yong Jiao, Guangheng Xie +2

Let $f:=(f_n{)}_{n\in {\mathbb{Z}}_{+}}$ and $g:=(g_n{)}_{n\in {\mathbb{Z}}_{+}}$ be two martingales related to the probability space $(\Omega ,\mathcal{F},\mathbb{P})$ equipped with the filtration $(…