Continuité sur les espaces de tentes par extrapolation

International audience; We study the action of operators on tent spaces such as maximal operators, Calderón-Zygmund operators, Riesz potentials. We also consider singular non-integral operators. We obtain boundedness as an application of extrapolation methods in the Banach range. In the non Banach range, boundedness results for Calderón-Zygmund operators follows by using an appropriate atomic theory. We end with some consequences on amalgalm spaces.