Weak factorization and Hankel forms for weighted Bergman spaces on the   unit ball
  We establish weak factorizations for a weighted Bergman space $A^p_{\a}$, with $1<p<\infty$, into two weighted Bergman spaces on the unit ball of $\C^n$. To obtain this result, we characterize bounded Hankel forms on weighted Bergman spaces on the unit ball of $\C^n$. 
Jordi Pau and Ruhan Zhao
math.FA math.CV