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IEICE TRANSACTIONS on Fundamentals

Excluded Minors of Rank 3 for Orientability and Representability

Hidefumi HIRAISHI, Sonoko MORIYAMA

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Summary :

We investigate excluded minor characterizations of two fundamental classes of matroids: orientable matroids and representable matroids. We prove (i) for any fixed field F, there exist infinitely many excluded minors of rank 3 for the union of the class of orientable matroids and the class of F-representable matroids, and (ii) for any fixed field F with characteristic 0, there exist infinitely many orientable excluded minors of rank 3 for intersection of the class of orientable matroids and the class of F-representable matroids. We show these statements by explicitly constructing infinite families of excluded minors.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E101-A No.9 pp.1355-1362
Publication Date
2018/09/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E101.A.1355
Type of Manuscript
Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category

Authors

Hidefumi HIRAISHI
  The University of Tokyo
Sonoko MORIYAMA
  Nihon University

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