Two interesting oriented matroids.
Richter-Gebert, Jürgen (1996)
Documenta Mathematica
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Displaying similar documents to “Oriented matroids in terms of order functions.”
Two interesting oriented matroids.
Oriented Matroids with Few Mutations.
G.M. Ziegler, N.E. Mnëv (1993)
Discrete & computational geometry
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Forbidden-minor characterization for the class of cographic element splitting matroids
Kiran Dalvi, Y.M. Borse, M.M. Shikare (2011)
Discussiones Mathematicae Graph Theory
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In this paper, we prove that an element splitting operation by every pair of elements on a cographic matroid yields a cographic matroid if and only if it has no minor isomorphic to M(K₄).
"What Is a Complex Matroid?"
G.M. Ziegler (1993)
Discrete & computational geometry
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Two Constructions of Oriented Matroids with Disconnected Extension Space.
J. Richter-Gebert, N.E. Mnëv (1993)
Discrete & computational geometry
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Amalgamation over uniform matroids
Svatopluk Poljak, Daniel Turzík (1984)
Czechoslovak Mathematical Journal
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Extension Spaces of Oriented Matroids.
B. Sturmfels, G. M. Ziegler (1993)
Discrete & computational geometry
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Oriented matroids today.
Ziegler, Günter M. (1996)
The Electronic Journal of Combinatorics [electronic only]
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On the Coordinatization of Oriented Matroids.
J. Bokowski, Bernd Sturmfels (1986)
Discrete & computational geometry
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Graphic Splitting of Cographic Matroids
Naiyer Pirouz (2015)
Discussiones Mathematicae Graph Theory
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In this paper, we obtain a forbidden minor characterization of a cographic matroid M for which the splitting matroid Mx,y is graphic for every pair x, y of elements of M.
On the excluded minors for matroids of branch-width three.
Hliněný, Petr (2002)
The Electronic Journal of Combinatorics [electronic only]
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