On a new construction of Nori motives

par Prof. Pierre CARTIER (CNRS & IHES)

mercredi 18 mai 2016, 10:30 → 12:00 Europe/Paris

Amphithéâtre Léon Motchane (IHES)

I shall report about a new direct construction of Nori motives, discovered independently by Barbieri-Viale and Prest on the one hand, by Joyal and myself on the other hand. Unlike previous constructions, one uses only standard constructions in category theory, like Frey free abelian category on a given additive category, and Serre’s construction of quotient categories.