Title
Excluding Kuratowski graphs and their duals from binary matroids
Abstract
We consider various applications of our characterization of the internally 4-connected binary matroids with no M(K3,3)-minor. In particular, we characterize the internally 4-connected members of those classes of binary matroids produced by excluding any collection of cycle and bond matroids of K3,3 and K5, as long as that collection contains either M(K3,3) or M*(K3,3). We also present polynomial-time algorithms for deciding membership of these classes, where the input consists of a matrix with entries from GF(2). In addition we characterize the maximum-sized simple binary matroids with no M(K3,3)-minor, for any particular rank, and we show that a binary matroid with no M(K3,3)-minor has a critical exponent over GF(2) of at most four.
Year
DOI
Venue
2017
10.1016/j.jctb.2017.03.005
J. Comb. Theory, Ser. B
Keywords
Field
DocType
critical exponent
Matroid,Graph,Discrete mathematics,Combinatorics,Dual polyhedron,Graphic matroid,Binary matroid,Critical exponent,Mathematics,Binary number
Journal
Volume
Issue
ISSN
125
C
0095-8956
Citations 
PageRank 
References 
0
0.34
11
Authors
3
Name
Order
Citations
PageRank
Dillon Mayhew110218.63
Gordon Royle2395.05
Geoff Whittle347157.57