Reducing real almost-linear second-order partial differential operators in two independent variables to a canonical form
Régularité de moyennes de solutions d'équations aux dérivées partielles
Regularity of The Complex Monge-Ampere Equation for Radially Symmetric Functions of the Unit Ball.
Remarks on Gårding inequalities for differential operators
Classical Gårding inequalities such as those of Hörmander, Hörmander-Melin or Fefferman-Phong are proved by pseudo-differential methods which do not allow to keep a good control on the supports of the functions under study nor on the smoothness of the coefficients of the operator. In this paper, we show by very simple calculations that in certain special situations, the results that can be obtained directly are much better than those expected thanks to the general theory.