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    DM
    2007
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    Lower connectivities of regular graphs with small diameter
    13 years 11 months ago
    Lower connectivities of regular graphs with small diameter
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    Krishnamoorthy, Thulasiraman and Swamy [Minimum order graphs with specified diameter, connectivity and regularity, Networks 19 (1989) 25–46] showed that a δ-regular graph with...
    Camino Balbuena, Xavier Marcote
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    DM
    2007
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    The topology of spaces of phylogenetic trees with symmetry
    13 years 11 months ago
    The topology of spaces of phylogenetic trees with symmetry
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    Natural Dowling analogues of the complex of phylogenetic trees are studied. Using discrete Morse theory, we find their homotopy types. In the process, the homotopy types of certai...
    Axel Hultman
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    DM
    2007
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    Feedback numbers of Kautz digraphs
    13 years 11 months ago
    Feedback numbers of Kautz digraphs
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    Jun-Ming Xu, Ye-Zhou Wu, Jia Huang, Chao Yang
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    DM
    2007
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    Matroids on convex geometries (cg-matroids)
    13 years 11 months ago
    Matroids on convex geometries (cg-matroids)
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    We consider matroidal structures on convex geometries, which we call cg-matroids. The concept of a cg-matroid is closely related to but different from that of a supermatroid intro...
    Satoru Fujishige, Gleb A. Koshevoy, Yoshio Sano
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    DM
    2007
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    Small subgraphs of random regular graphs
    13 years 11 months ago
    Small subgraphs of random regular graphs
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    The main aim of this short paper is to answer the following question. Given a fixed graph H, for which values of the degree d does a random d-regular graph on n vertices contain ...
    Jeong Han Kim, Benny Sudakov, Van H. Vu
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    DM
    2007
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    On arithmetic and asymptotic properties of up-down numbers
    13 years 11 months ago
    On arithmetic and asymptotic properties of up-down numbers
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    Francis C. S. Brown, Thomas M. A. Fink, Karen Will...
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    DM
    2007
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    On the number of zero-sum subsequences
    13 years 11 months ago
    On the number of zero-sum subsequences
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    Hui-Qin Cao, Zhi-Wei Sun
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    DM
    2007
    129views more  DM 2007»
    3-Designs with block size 6 from PSL(2, q) and their large sets
    13 years 11 months ago
    3-Designs with block size 6 from PSL(2, q) and their large sets
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    We investigate the existence of 3-designs and uniform large sets of 3-designs with block size 6 admitting PSL(2, q) as an automorphism group. We show the existence of simple 3-(28...
    G. R. Omidi, M. R. Pournaki, Behruz Tayfeh-Rezaie
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    DM
    2007
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    On partitioning of hypergraphs
    13 years 11 months ago
    On partitioning of hypergraphs
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    Sergei L. Bezrukov, Roberto Battiti
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    DM
    2007
    66views more  DM 2007»
    [r, s, t]-Chromatic numbers and hereditary properties of graphs
    13 years 11 months ago
    [r, s, t]-Chromatic numbers and hereditary properties of graphs
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    Arnfried Kemnitz, Massimiliano Marangio, Peter Mih...
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