Hardy-type inequalities for vector fields with the tangential components   vanishing
  This note studies the Hardy-type inequalities for vector fields with the $L^1$ norm of the $\curl$. In contrast to the well-known results in the whole space for the divergence-free vectors, we generalize the Hardy-type inequalities to the bounded domains and to the non-divergence-free vector fields with the tangential components on the boundary vanishing. 
Xingfei Xiang and Zhibing Zhang
math.AP