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    EJC
    2006
    99views Information Technology» more  EJC 2006»
    Product representations of polynomials
    13 years 11 months ago
    Product representations of polynomials
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    For a fixed polyomial f Z[X], let k(N) denote the maximum size of a set A {1, 2, . . . , N} such that no product of k distinct elements of A is in the value set of f. In this pap...
    Jacques Verstraëte
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    EJC
    2006
    92views Information Technology» more  EJC 2006»
    Matroid tree-width
    13 years 11 months ago
    Matroid tree-width
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    Abstract. We show that the tree-width of a graph can be defined without reference to graph vertices, and hence the notion of tree-width can be naturally extended to matroids. (This...
    Petr Hlinený, Geoff Whittle
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    EJC
    2006
    86views Information Technology» more  EJC 2006»
    A construction for non-rank facets of stable set polytopes of webs
    13 years 11 months ago
    A construction for non-rank facets of stable set polytopes of webs
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    Arnaud Pêcher, Annegret Wagler
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    EJC
    2006
    104views Information Technology» more  EJC 2006»
    Perfect matchings in uniform hypergraphs with large minimum degree
    13 years 11 months ago
    Perfect matchings in uniform hypergraphs with large minimum degree
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    A perfect matching in a k-uniform hypergraph on n vertices, n divisible by k, is a set of n/k disjoint edges. In this paper we give a sufficient condition for the existence of a p...
    Vojtech Rödl, Andrzej Rucinski, Endre Szemer&...
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    EJC
    2006
    78views Information Technology» more  EJC 2006»
    On constructive characterizations of (k, l)-sparse graphs
    13 years 11 months ago
    On constructive characterizations of (k, l)-sparse graphs
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    László Szegö
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    EJC
    2006
    119views Information Technology» more  EJC 2006»
    Antisymmetric flows in matroids
    13 years 11 months ago
    Antisymmetric flows in matroids
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    We present a seemingly new definition of flows and flow numbers for oriented matroids and prove that the flow number L and the antisymmetric flow number Las of an oriented matroid...
    Winfried Hochstättler, Jaroslav Nesetril
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    EJC
    2006
    91views Information Technology» more  EJC 2006»
    Counting connected graphs asymptotically
    13 years 11 months ago
    Counting connected graphs asymptotically
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    We find the asymptotic number of connected graphs with k vertices and k - 1 + l edges when k, l approach infinity, reproving a result of Bender, Canfield and McKay. We use the pro...
    Remco van der Hofstad, Joel Spencer
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    EJC
    2006
    93views Information Technology» more  EJC 2006»
    Hamilton cycles in random lifts of graphs
    13 years 11 months ago
    Hamilton cycles in random lifts of graphs
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    An n-lift of a graph K, is a graph with vertex set V (K)
    K. Burgin, Prasad Chebolu, Colin Cooper, Alan M. F...
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    EJC
    2006
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    On the diameter of separated point sets with many nearly equal distances
    13 years 11 months ago
    On the diameter of separated point sets with many nearly equal distances
    Download  www.math.princeton.edu
    János Pach, Rados Radoicic, Jan Vondr&aacut...
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    EJC
    2006
    99views Information Technology» more  EJC 2006»
    Eulerian colorings and the bipartizing matchings conjecture of Fleischner
    13 years 11 months ago
    Eulerian colorings and the bipartizing matchings conjecture of Fleischner
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    Zdenek Dvorak, Tomás Kaiser, Daniel Kr&aacu...
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