Journée-séminaire de combinatoire

(équipe CALIN du LIPN, université Paris-Nord, Villetaneuse)

Le 02 avril 2013 à 10h30 en B107, Valentin Bonzom nous parlera de : Invariants of cellular complexes from twisted cohomology and the Reidemeister torsion

Résumé : Cellular complexes are often used in physics as discretizations of spacetime. An interesting class of amplitudes associated to those complexes are topological invariants. I will present a simple model which relates an integral over some Lie group elements associated to the edges of the complex to the so called combinatorial, or Reidemeister torsion of the complex.


Dernière modification : mardi 09 janvier 2018 Valid HTML 4.01! Valid CSS! Organisateurs : Cyril.Banderier & Gerard.Duchamp at lipn.univ-paris13.fr