%0 Journal Article %T A New proof of the CR Identity and related Topics %A Gamara %A Najoua %A Ahmed %A Ali Ben %A Aribi %A Amine %J Cubo (Temuco) %D 2012 %I Scientific Electronic Library Online %R 10.4067/S0719-06462012000200003 %X in this paper we give a new proof for "the cr identity" and deduce non existence results of positive solutions for semi-linear boundary value problems on star-shaped domains where is the sublaplacian of the heisenberg group , function on a star-shaped and bounded domain. %K analysis on cr manifolds %K cr structure %K cr identity %K critical growth %K yamabe like problems. %U http://www.scielo.cl/scielo.php?script=sci_abstract&pid=S0719-06462012000200003&lng=en&nrm=iso&tlng=en