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Non-Binary Matroids Having At Most Three Non-Binary Elements

Published online by Cambridge University Press:  12 September 2008

Manoel Lemos
Affiliation:
Departamento de Matemática, Universidade Federal de Pernambuco Cidade Universitária, Recife, PE, 50740–540, Brazil e-mail: manoel@dmat.ufpe.br

Abstract

An element e of a matroid M is called non-binary when M\e and M/e are both non-binary matroids. Oxley in [5] gave a characterization of the 3-connected non-binary matroids without non-binary elements. In this paper, we will construct all the 3-connected matroids having 1, 2 or 3 non-binary elements.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1994

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References

[1]Bixby, R. E. (1974) 1-matrices and a characterization of binary matroid. Discrete Math. 8 139145.CrossRefGoogle Scholar
[2]Bixby, R. E. (1982) A simple theorem on 3-connectivity. Linear Algebra Appl. 45 123126.CrossRefGoogle Scholar
[3]Crapo, H. H. (1965) Single-element extensions of matroids. J. Res. Nat. Bur. Standards, Sect. B 69 5565.CrossRefGoogle Scholar
[4]Oxley, J. G. (1987) On nonbinary 3-connected matroids. Transactions of the American Mathematical Society 300 663679.Google Scholar
[5]Oxley, J. G. (1990) A characterization of a class of non-binary matroids. J. Combin. Theory, Ser. B 49 181189.CrossRefGoogle Scholar
[6]Oxley, J. G. (1992) Matroid Theory, Oxford University Press.Google Scholar
[7]Seymour, P. D. (1980) Decomposition of regular matroids. J. Combin. Theory, Ser. B 28 305359.CrossRefGoogle Scholar
[8]Seymour, P. D. (1981) On minors of non-binary matroids. Combinatorica 1 387394.CrossRefGoogle Scholar
[9]Tutte, W. T. (1965) Lectures on matroids. J. Res. Nat. Bur. Standards, Sect. B 69 147.Google Scholar
[10]Tutte, W. T. (1966) Connectivity in matroids. Canad. J. Math. 18 13011324.CrossRefGoogle Scholar
[11]Welsh, D. J. A. (1976) Matroid Theory, Academic Press.Google Scholar