We consider a non-self-adjoint h-pseudodifferential operator P in the semi-classical limit (h → 0). If p is the leading symbol, then under suitable assumptions about the behaviour of p at infinity, we know that the resolvent (z − P )−1 is uniformly bounded for z in any compact set not intersecting the closure of the range of p. Under a subellipticity condition, we show that the resolvent extend...

We study the link between Ψdos and Wick operators via Bargmann transform. deduce a formula for symbol of operator in terms short-time Fourier transform Weyl symbol. This gives characterizations symbols Shubin type infinite order, results on composition. prove series expansion anti-Wick which leads to sharp Gårding inequality transition hypoellipticity symbols. Finally we show continuity operato...

Les romanciers de la nouvelle génération transgressent, sans aucune gêne, norme grammaticale. Ce genre discours, qui dans deuxième moitié du XXe siècle semblait une innovation, est devenu en ce début XXIe les littératures négro-africaines. L’œuvre K. Kwahulé s’inscrit cette mouvance. Babyface un roman construit bric-broc. Le discours entrelacs phénomènes linguistiques et sociaux disparates comp...