Séminaires : Séminaire sur les Singularités

Equipe(s) : gd,
Responsables :André BELOTTO, Hussein MOURTADA, Matteo RUGGIERO, Bernard TEISSIER
Email des responsables : hussein.mourtada@imj-prg.fr
Salle : salle 1016
Adresse :Sophie Germain

Archive avant 2015

Hébergé par le projet Géométrie et Dynamique de l’IMJ-PRG



Orateur(s) Hema Srinivasan, - University of Missouri,
Titre A gluing operation on Semigroup Rings
Horaire16:00 à 18:00
RésumeFirst we will discuss the numerical semigroup rings, which are subsemigroups of the natural numbers. In this case, these rings are also the homogeneous coordinate rings of the monomial curves. Given two semigroups A and B, we will construct the minimal homogenous resolution of the semigroup C obtained by gluing A and B. From this construction, we can read off the formulae for the invariants of C in terms of A and B. There is not yet a complete generalization of gluing in higher dimensions. We will give some partial results in higher dimensions as well as some instances where a gluing is impossible.

Sallesalle 1016
AdresseSophie Germain