Le séminaire symplectix du 4 février est intégré dans la rencontre de l'ANR Cosy des 3-4-5 février.
Exposé de Mélanie Bertelson (Bruxelles) le vendredi 4 février 10h-11h à Jussieu en salle 15-25-502
https://us02web.zoom.us/j/86008898134?pwd=WFZSaU1BdzhRN3Nkbm1wU0NMQWduZz09
Title : A construction of locally conformal symplectic structures
Résumé : We
describe a construction of a locally conformal symplectic structure
homotopic to any given non-degenerate 2-form and whose Lee form can be
any non-exact 1-form. Each connected component of the boundary, if any,
may be chosen to be concave or convex and to inherit a given overtwisted
contact structure. On the other hand, for codimension one foliations, a
leafwise locally conformal symplectic structure whose Lee form
coincides with the holonomy 1-form of the foliation, yields a contact
structure. Unfortunately, the h-principle described above does not admit
a foliated version, unless the ambient manifold has a non-empty
boundary that intersects all the leaves (plus some other necessary
conditions). This is a joint work with Gaël Meigniez.
Prochaines séances: 11 mars (A. Gadbled, Y. Rollin, ?),
Autre activité symplectique à Paris:
- Symplectic Zoominar (les vendredis hors symplectix à 15:15, heure de Paris)
