Date/heure
18 février 2026
14:15 - 15:15
Oratrice ou orateur
Alfonso Garmendia (Dijon)
Catégorie d'évènement Séminaire Théorie de Lie, Géométrie et Analyse
Résumé
This talk, based on joint work with Francesco Cattafi, presents an extension of the classical correspondence between vector bundles and principal bundles to the Lie groupoid setting. To achieve this, we introduced the notion of a PB-groupoid with a structural Lie 2-groupoid, establishing a correspondence between VB-groupoids and PB-groupoids. This framework enhances our understanding of VB-groupoids, which play a fundamental role in Poisson geometry, and provides a natural perspective on the tangent space of smooth symmetries.