Intersecting systems of signed sets.
Borg, Peter (2007)
The Electronic Journal of Combinatorics [electronic only]
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Borg, Peter (2007)
The Electronic Journal of Combinatorics [electronic only]
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Ziegler, Günter M. (1996)
The Electronic Journal of Combinatorics [electronic only]
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D. A. Higgs (1969)
Colloquium Mathematicae
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Jaritz, Renate (1997)
Beiträge zur Algebra und Geometrie
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Cordovil, Raúl, Guedes de Oliveira, A., Moreira, M. Leonor (1988)
Portugaliae mathematica
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Hliněný, Petr (2002)
The Electronic Journal of Combinatorics [electronic only]
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Richter-Gebert, Jürgen (1996)
Documenta Mathematica
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Wojciech Kordecki, Anna Łyczkowska-Hanćkowiak (2013)
Discussiones Mathematicae Graph Theory
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Dohmen [4] gives a simple inductive proof of Whitney’s famous broken circuits theorem. We generalise his inductive proof to the case of matroids
Ardila, Federico (2007)
The Electronic Journal of Combinatorics [electronic only]
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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).
Bourgin, D.G. (1952)
Portugaliae mathematica
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Bouchet, André (1998)
The Electronic Journal of Combinatorics [electronic only]
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