Howald's theorem revisited

Géométrie des espaces singuliers

Lieu: 
Salle séminaire M3
Orateur: 
Miguel ROBREDO
Affiliation: 
Univ. Complutense, Madrid
Dates: 
Mardi, 17 Janvier, 2017 - 10:15 - 11:15
Résumé: 

Multiplier ideals and jumping numbers are, in general, quite difficul to compute. Howald's theorem allows to write multiplier ideals as points corresponding to a monomial inside of the Newton polyhedron for a monomial ideal. Toric resolutions seem to be the perfect land to generalize Howald's result. In the talk we discuss about the generalization to plane branches, with the extremely useful ingredient of Eggers-Wall trees, which simplify computations to a simple combinatorial question.