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    DM
    2002
    101views more  DM 2002»
    Pseudocomplements of closure operators on posets
    13 years 11 months ago
    Pseudocomplements of closure operators on posets
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    Some recent results provide su cient conditions for complete lattices of closure operators on complete lattices, ordered pointwise, to be pseudocomplemented. This paper gives resu...
    Francesco Ranzato
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    DM
    2002
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    Embedding path designs in 4-cycle systems
    13 years 11 months ago
    Embedding path designs in 4-cycle systems
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    Gaetano Quattrocchi
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    DM
    2002
    56views more  DM 2002»
    Strongly adjacency-transitive graphs and uniquely shift-transitive graphs
    13 years 11 months ago
    Strongly adjacency-transitive graphs and uniquely shift-transitive graphs
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    Tomaz Pisanski, Thomas W. Tucker, Boris Zgrablic
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    DM
    2002
    102views more  DM 2002»
    Infinite antichains of matroids with characteristic set {p}
    13 years 11 months ago
    Infinite antichains of matroids with characteristic set {p}
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    For each prime p, we construct an infinite antichain of matroids in which each matroid has characteristic set {p}. For p = 2, each of the matroids in our antichain is an excluded m...
    James G. Oxley, Charles Semple, Dirk L. Vertigan, ...
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    DM
    2002
    93views more  DM 2002»
    New constructions of non-adaptive and error-tolerance pooling designs
    13 years 11 months ago
    New constructions of non-adaptive and error-tolerance pooling designs
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    We propose two new classes of non-adaptive pooling designs. The first one is guaranteed to be
    Hung Q. Ngo, Ding-Zhu Du
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    DM
    2002
    81views more  DM 2002»
    On restricted edge-colorings of bicliques
    13 years 11 months ago
    On restricted edge-colorings of bicliques
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    We investigate the minimum and maximum number of colors in edge-colorings of Kn,n such that every copy of Kp,p receives at least q and at most q colors. Along the way we improve t...
    Dhruv Mubayi, Douglas B. West
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    DM
    2002
    186views more  DM 2002»
    Coloring Eulerian triangulations of the projective plane
    13 years 11 months ago
    Coloring Eulerian triangulations of the projective plane
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    A simple characterization of the 3, 4, or 5-colorable Eulerian triangulations of the projective plane is given. Key words: Projective plane, triangulation, coloring, Eulerian grap...
    Bojan Mohar
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    DM
    2002
    53views more  DM 2002»
    L-functions for images of graph coverings by some operations
    13 years 11 months ago
    L-functions for images of graph coverings by some operations
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    Hirobumi Mizuno, Iwao Sato
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    DM
    2002
    72views more  DM 2002»
    On approximating the maximum diameter ratio of graphs
    13 years 11 months ago
    On approximating the maximum diameter ratio of graphs
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    Joze Marincek, Bojan Mohar
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    DM
    2002
    70views more  DM 2002»
    Embedding partial bipartite directed cycle systems
    13 years 11 months ago
    Embedding partial bipartite directed cycle systems
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    Charles Curtis Lindner, Lorenzo Milazzo
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