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Symplectic actions of tori on four-manifolds (Séminaire commun avec la physique mathématique).

Vendredi, 4 Mai, 2007 - 16:00
Prénom de l'orateur : 
Alvaro
Nom de l'orateur : 
PELAYO
Résumé : 

I will present a classification of symplectic actions of
2-tori on compact, connected symplectic 4-manifolds, up to equivariant
symplectomorphisms. The classification is in terms of a collection of
invariants of the topology of the manifold, of the torus action and of
the symplectic form. I will construct explicit models of such symplectic
manifolds with torus actions, defined in terms of these invariants. Some
results are joint with J.J. Duistermaat.

Institution de l'orateur : 
University of Michigan
Thème de recherche : 
Topologie
Salle : 
1 tour Irma
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