3 papers
math.CO2021
Ricci curvature of Bruhat orders
Viola Siconolfi
We study the Ricci curvature of the Hasse diagrams of the Bruhat order of finite irreducible Coxeter groups. For this purpose we compute the maximum degree of these graphs for type…
math.CO2021
Ricci curvature, Bruhat graphs and Coxeter groups
Viola Siconolfi
We consider the notion of discrete Ricci curvature for graphs defined by Schmuckenschl{ä}ger \cite{shmuck} and compute its value for Bruhat graphs associated to finite Coxeter grou…
math.CO2018
Wonderful models for generalized Dowling arrangements
Giovanni Gaiffi, Viola Siconolfi
For any triple given by a positive integer n, a finite group G, and a faithful representation V of G, one can describe a subspace arrangement whose intersection lattice is a genera…