Séminaire Combinatoire et Théorie des Nombres ICJ

Mobius functions for real hyperplane arrangements

Name: Mobius functions for real hyperplane arrangements
Start: 2019-01-15T10:45:00+01:00
End: 2019-01-15T11:45:00+01:00
Location: ICJ, Université Lyon 1

par Marcelo Aguiar (Cornell University)

mardi 15 janv. 2019, 10:45 → 11:45 Europe/Paris

Bât. Braconnier, salle Fokko du Cloux (ICJ, Université Lyon 1)

Bât. Braconnier, salle Fokko du Cloux

ICJ, Université Lyon 1

Description

We discuss the beginnings of a theory of noncommutative Mobius functions and its connections to the structure of the algebra of faces of a hyperplane arrangement. It is to be seen as a generalization of the theory of Mobius functions for lattices, developed by Rota and his school in the 70's.

Joint work with Swapneel Mahajan.