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    COMBINATORICS
    2006
    128views more  COMBINATORICS 2006»
    On Lengths of Rainbow Cycles
    14 years 9 months ago
    On Lengths of Rainbow Cycles
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    We prove several results regarding edge-colored complete graphs and rainbow cycles, cycles with no color appearing on more than one edge. We settle a question posed by Ball, Pultr...
    Boris Alexeev
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    COMBINATORICS
    2006
    110views more  COMBINATORICS 2006»
    Jamming and Geometric Representations of Graphs
    14 years 9 months ago
    Jamming and Geometric Representations of Graphs
    Download  iti.mff.cuni.cz
    We expose a relationship between jamming and a generalization of Tutte's barycentric embedding. This provides a basis for the systematic treatment of jamming and maximal packi...
    Werner Krauth, Martin Loebl
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    COMBINATORICS
    2006
    126views more  COMBINATORICS 2006»
    Plethysm for Wreath Products and Homology of Sub-Posets of Dowling Lattices
    14 years 9 months ago
    Plethysm for Wreath Products and Homology of Sub-Posets of Dowling Lattices
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    We prove analogues for sub-posets of the Dowling lattices of the results of Calderbank, Hanlon, and Robinson on homology of sub-posets of the partition lattices. The technical too...
    Anthony Henderson
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    COMBINATORICS
    2006
    141views more  COMBINATORICS 2006»
    Binary Words Containing Infinitely Many Overlaps
    14 years 9 months ago
    Binary Words Containing Infinitely Many Overlaps
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    We characterize the squares occurring in infinite overlap-free binary words and construct various power-free binary words containing infinitely many overlaps.
    James D. Currie, Narad Rampersad, Jeffrey Shallit
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    COMBINATORICS
    1998
    76views more  COMBINATORICS 1998»
    An Exploration of the Permanent-Determinant Method
    14 years 9 months ago
    An Exploration of the Permanent-Determinant Method
    Download  www.combinatorics.org
    The permanent-determinant method and its generalization, the HafnianPfaffian method, are methods to enumerate perfect matchings of plane graphs that were discovered by P. W. Kaste...
    Greg Kuperberg
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