Bellman functions and $L^p$ estimates for paraproducts
  We give an explicit formula for one possible Bellman function associated with the $L^p$ boundedness of dyadic paraproducts regarded as bilinear operators or trilinear forms. Then we apply the same Bellman function in various other settings, to give self-contained alternative proofs of the estimates for several classical operators. These include the martingale paraproducts of Ba\~{n}uelos and Bennett and the paraproducts with respect to the heat flows. 
Vjekoslav Kova\v{c}, Kristina Ana \v{S}kreb
math.PR math.CA