Endpoint for the div-curl lemma in Hardy spaces
  We give a div-curl type lemma for the wedge product of closed differential forms on R^n when they have coefficients respectively in a Hardy space and L^infinity or BMO. In this last case, the wedge product belongs to an appropriate Hardy-Orlicz space. 
Aline Bonami (MAPMO), Justin Feuto, Sandrine Grellier (MAPMO)