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    » Branch-Width and Rota's Conjecture
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    JCT
    2002
    69views more  JCT 2002»
    Branch-Width and Rota's Conjecture
    15 years 3 months ago
    Branch-Width and Rota's Conjecture
    Download  www.math.uwaterloo.ca
    James F. Geelen, Geoffrey P. Whittle
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    142
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    COMBINATORICS
    2002
    92views more  COMBINATORICS 2002»
    On the Excluded Minors for Matroids of Branch-Width Three
    15 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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    JCT
    2006
    62views more  JCT 2006»
    On Rota's conjecture and excluded minors containing large projective geometries
    15 years 4 months ago
    On Rota's conjecture and excluded minors containing large projective geometries
    Download  homepages.cwi.nl
    We prove that an excluded minor for the class of GF(q)-representable matroids cannot contain a large projective geometry over GF(q) as a minor.
    James F. Geelen, Bert Gerards, Geoff Whittle
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