Title
Enumerating topological $(n_k)$-configurations
Abstract
An $(n_k)$-configuration is a set of $n$ points and $n$ lines in the projective plane such that their point-line incidence graph is $k$-regular. The configuration is geometric, topological, or combinatorial depending on whether lines are considered to be straight lines, pseudolines, or just combinatorial lines. We provide an algorithm for generating, for given $n$ and $k$, all topological $(n_k)$-configurations up to combinatorial isomorphism, without enumerating first all combinatorial $(n_k)$-configurations. We apply this algorithm to confirm efficiently a former result on topological $(18_4)$-configurations, from which we obtain a new geometric $(18_4)$-configuration. Preliminary results on $(19_4)$-configurations are also briefly reported.
Year
Venue
Field
2012
Computational Geometry: Theory and Applications
Topology,Discrete mathematics,Graph,Combinatorics,Isomorphism,Projective plane,Mathematics
DocType
Volume
ISSN
Journal
abs/1210.0306
Comput. Geom., 47(2):175-186, 2014
Citations 
PageRank 
References 
1
0.45
3
Authors
2
Name
Order
Citations
PageRank
Jürgen Bokowski115927.72
Vincent Pilaud25710.15