Séminaires : Séminaire Dérivé

Equipe(s) : aa,
Responsables :Jean-Baptiste Teyssier, Maria Yakerson, Marco Roblaoo
Email des responsables : jean-baptiste.teyssier@imj-prg.fr, marco.robalo@imj-prg.fr, yakerson@imj-prg.fr
Salle : Salle Maryam Mirzakhani
Adresse :IHP
Description

Homotopical Methods in Algebraic and Arithmetic Geometry.

https://indico.math.cnrs.fr/category/808/


Orateur(s) Dustin Clausen - IHES,
Titre Formal groups and cohomology theories
Date23/01/2026
Horaire13:45 à 15:30
Diffusion
Résume

Quillen discovered a correspondence between cohomology theories and formal groups. While Quillen's correspondence is tight enough to be extremely successful in transporting phenomena back and forth, it is not one-to-one: some cohomology theories are missed, as are some formal groups. I will explain how to turn Quillen's correspondence into a one-to-one correspondence by changing the definition of a cohomology theory. From another perspective, this gives a functor-of-points description of Lurie's "derived moduli stack of formal groups", which he specified via charts. This is joint work with Robert Burklund and Ishan Levy.

SalleSalle Maryam Mirzakhani
AdresseIHP
© IMJ-PRG