Excluding Kuratowski graphs and their duals from binary matroids

Dillon Mayhew, Gordon Royle, Geoff Whittle

Research output: Contribution to journalArticle

Abstract

We consider some applications of our characterisation of the internally 4-connected binary matroids with no M(K3,3)-minor. We characterise the internally 4-connected binary matroids with no minor in M, where M is a subset of {M(K3,3),M(K3,3),M(K5),M(K5)} that contains either M(K3,3) or M(K3,3). We also describe a practical algorithm for testing whether a binary matroid has a minor in M. In addition we characterise the growth-rate of binary matroids with no M(K3,3)-minor, and we show that a binary matroid with no M(K3,3)-minor has critical exponent over GF(2) at most equal to four.

Original languageEnglish
Pages (from-to)95-113
Number of pages19
JournalJournal of Combinatorial Theory. Series B
Volume125
DOIs
Publication statusPublished - 1 Jul 2017

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