Combinatorial Algebraic Topology and Applications

On the Cohomology of the Toric Compact Model of Type A_n

speaker: Viola Siconolfi (Politecnico di Bari)

abstract: I will start by presenting the wonderful compactification of a toric arrangement and some results on its cohomology ring. This first part is based on a paper from De Concini and Gaiffi. I will then focus on the toric arrangement of type A_n and give a combinatorial description of a monomial basis for the cohomology ring of its wonderful model. Such a description offers a geometrical point of view on the relation between some Eulerian statistics on the symmetric group. (This is a joint work with G. Gaiffi and O. Papini)

timetable:
Tue 28 Nov, 11:00 - 12:00, Aula Dini
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