100, rue des maths 38610 Gières / GPS : 45.193055, 5.772076 / Directeur : Louis Funar

Laurent Stolovitch

Equivalence of neighborhoods of embedded compact complex manifolds and higher codimension foliations
Lundi, 10 Février, 2020 - 14:00
Résumé : 

We consider an embedded $n$-dimensional compact complex manifold in $n+d$ dimensional complex manifolds. We are interested in the holomorphic classification of neighborhoods as part of Grauert's formal principle program. We will give conditions ensuring that a neighborhood of $C_n$ in $M_{n+d}$ is biholomorphic to a neighborhood of the zero section of its normal bundle. This extends Arnold's result about neighborhoods of a complex torus in a surface. We also prove the existence of a holomorphic foliation in $M_{n+d}$ having $C_n$ as a compact leaf, extending Ueda's theory to the high codimension case. Both problems appear as a kind linearization problem involving {\it small divisors condition} arising from solutions to their cohomological equations. This is joint work with X. Gong (Univ. Wisconsin-Madison).

Institution de l'orateur : 
Université de Nice Sophia-Antipolis
Thème de recherche : 
Algèbre et géométries
Salle : 
logo uga logo cnrs