Title
Circuits and Cocircuits in Regular Matroids
Abstract
A classical result of Dirac's shows that, for any two edges and any n−2 vertices in a simple n-connected graph, there is a cycle that contains both edges and all n−2 of the vertices. Oxley has asked whether, for any two elements and any n−2 cocircuits in an n-connected matroid, there is a circuit that contains both elements and that has a non-empty intersection with all n−2 of the cocircuits. By using Seymour's decomposition theorem and results of Oxley and Denley and Wu, we prove that a slightly stronger property holds for regular matroids.
Year
DOI
Venue
2006
10.1007/s00373-006-0677-9
Graphs and Combinatorics
Keywords
Field
DocType
cocircuits,regular matroids,n-connected matroid,decomposition theorem,classical result,dirac,circuits,stronger property,non-empty intersection,simple n-connected graph
Matroid,Discrete mathematics,Graph,Combinatorics,Vertex (geometry),Decomposition theorem,Dirac (video compression format),Graphic matroid,Electronic circuit,Mathematics
Journal
Volume
Issue
ISSN
22
3
1435-5914
Citations 
PageRank 
References 
2
0.46
3
Authors
1
Name
Order
Citations
PageRank
Dillon Mayhew110218.63