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    » On basis-exchange properties for matroids
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    COMBINATORICS
    2002
    92views more  COMBINATORICS 2002»
    On the Excluded Minors for Matroids of Branch-Width Three
    13 years 4 months ago
    On the Excluded Minors for Matroids of Branch-Width Three
    Download  www.combinatorics.org
    Knowing the excluded minors for a minor-closed matroid property provides a useful alternative characterization of that property. It has been shown in [R. Hall, J. Oxley, C. Semple...
    Petr Hlinený
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    DCG
    2000
    79views more  DCG 2000»
    Mutation Polynomials and Oriented Matroids
    13 years 4 months ago
    Mutation Polynomials and Oriented Matroids
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    Several polynomials are of use in various enumeration problems concerning objects in oriented matroids. Chief among these is the Radon catalog. We continue to study these, as well ...
    J. Lawrence
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    DM
    1998
    195views more  DM 1998»
    On basis-exchange properties for matroids
    13 years 4 months ago
    On basis-exchange properties for matroids
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    We give a counterexample to a conjecture by Wild about binary matroids. We connect two equivalent lines of research in matroid theory: a simple type of basis-exchange property and ...
    Joseph E. Bonin
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    DM
    1998
    70views more  DM 1998»
    On exchange properties for Coxeter matroids and oriented matroids
    13 years 4 months ago
    On exchange properties for Coxeter matroids and oriented matroids
    Download  www.maths.manchester.ac.uk
    Alexandre V. Borovik, Israel M. Gelfand, Neil Whit...
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    EJC
    2011
    190views Information Technology» more  EJC 2011»
    Modular elimination in matroids and oriented matroids
    12 years 11 months ago
    Modular elimination in matroids and oriented matroids
    Download  www.math.binghamton.edu
    Abstract. We introduce a new axiomatization of oriented matroids that requires the elimination property only among modular pairs of circuits. This new point of view leads also to a...
    Emanuele Delucchi
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