Motivic theories for orbifolds

par Mahn Toan Nguyen

vendredi 8 juin 2018, 10:30 → 11:30 Europe/Paris

Salle 112 (ICJ)

In this talk, I will discuss about new algebraic invariants for algebraic orbifolds: orbifold motivic cohomology and orbifold higher K-theory. These invariants come out as a consequence of the obstruction bundles and the virtual fundamental classes in Gromov-Witten theory. I will also explain how these invariants relate to motivic cohomology and K-theory of (crepant) resolutions of singularities of the coarse moduli spaces of orbifolds. This is a joint work with Lie Fu.