Séminaire de l’équipe AGA
Responsables : F. SCAVIA, M. TAMIOZZO
Vendredi 10 avril 2026
10:30 Ambrus Pál (Eötvös Loránd University) 
Résumé
Computing the motivic Euler characteristic
Salle B407, bâtiment B, LAGA, Institut Galilée, Université Paris 13The motivic Euler characteristic is an invariant whose roots are in motivic homotopy theory, but can be defined in a much more classical way. It plays an important role in the quadratic refinement of curve counting. I will report on ongoing research about computing it various cases, which includes its birational invariance for Calabi-Yau varieties, methods using the theory of Galois invariants and unramified cohomology, and its relations to other cohomological invariants.
Vendredi 17 avril 2026
10:30 Remy van Dobben de Bruyn (Max Planck Institute for Mathematics (Bonn))
Titre bientôt disponible
Salle B407, bâtiment B, LAGA, Institut Galilée, Université Paris 13
