Characteristic elements for real hyperplane arrangements
Combinatorics
2019-02-21 v1
Abstract
Characteristic elements of the Tits algebra of a real hyperplane arrangement carry information about the characteristic polynomial. We present this notion and its basic properties, and apply it to derive various results about the characteristic polynomial of an arrangement, from Zaslavsky's formulas to more recent results of Kung and of Klivans and Swartz. We construct several examples of characteristic elements, including one in terms of intrinsic volumes of faces of the arrangement.
Cite
@article{arxiv.1902.07325,
title = {Characteristic elements for real hyperplane arrangements},
author = {Marcelo Aguiar and Jose Bastidas and Swapneel Mahajan},
journal= {arXiv preprint arXiv:1902.07325},
year = {2019}
}
Comments
Extended abstract to appear in FPSAC 2019 conference proceedings