Title
Combinatorial polar orderings and recursively orderable arrangements
Abstract
Polar orderings arose in recent work of Salvetti and the second author on minimal CW-complexes for complexified hyperplane arrangements. We study the combinatorics of these orderings in the classical framework of oriented matroids, and reach thereby a weakening of the conditions required to actually determine such orderings. A class of arrangements for which the construction of the minimal complex is particularly easy, called recursively orderable arrangements, can therefore be combinatorially defined. We initiate the study of this class, giving a complete characterization in dimension 2 and proving that every supersolvable complexified arrangement is recursively orderable.
Year
DOI
Venue
2010
10.1016/j.aam.2008.11.005
Advances in Applied Mathematics
Keywords
Field
DocType
supersolvable complexified arrangement,minimal cw-complexes,classical framework,minimal complex,complexified hyperplane arrangement,recursively orderable,oriented matroids,combinatorial polar ordering,polar ordering,complete characterization,recursively orderable arrangement,discrete morse theory,arrangement of hyperplanes,oriented matroid
Matroid,Combinatorics,Mathematical analysis,Polar,Hyperplane,Discrete Morse theory,Recursion,Mathematics
Journal
Volume
Issue
ISSN
44
2
Adv. Appl. Math., 44 (2010), issue 2, 124-144
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Emanuele Delucchi183.50
Simona Settepanella201.69