2 papers
math.DG2010
Dégénerescence Locale des Transformations Conformes pseudo-Riemanniennes
Charles Frances
We study the set of conformal immersions between two pseudo-Riemannian manifolds of same dimension. We characterize the closure of this set inside the space of continuous maps, and…
math.DG2010
Formes normales pour les champs conformes pseudo-riemanniens
Charles Frances, Karin Melnick
We establish normal forms for conformal vector fields on pseudo-Riemannian manifolds in the neighborhood of a singularity. For real-analytic Lorentzian manifolds, we show that the…