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    EJC
    2008
    163views Information Technology» more  EJC 2008»
    Multiple Kronecker covering graphs
    13 years 11 months ago
    Multiple Kronecker covering graphs
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    A graph may be the Kronecker cover in more than one way. In this note we explore this phenomenon and apply it to show that the minimal common cover of two graphs need not be uniqu...
    Wilfried Imrich, Tomaz Pisanski
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    EJC
    2008
    89views Information Technology» more  EJC 2008»
    Explicit constructions of loops with commuting inner mappings
    13 years 11 months ago
    Explicit constructions of loops with commuting inner mappings
    Download  www.du.edu
    In 2004, Cs
    Ales Drápal, Petr Vojtechovský
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    EJC
    2008
    80views Information Technology» more  EJC 2008»
    Large sets of Hamilton cycle decompositions of complete bipartite graphs
    13 years 11 months ago
    Large sets of Hamilton cycle decompositions of complete bipartite graphs
    Download  www.combinatorics.net.cn
    Qingde Kang, Hongtao Zhao
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    EJC
    2008
    78views Information Technology» more  EJC 2008»
    On triangle-free distance-regular graphs with an eigenvalue multiplicity equal to the valency
    13 years 11 months ago
    On triangle-free distance-regular graphs with an eigenvalue multiplicity equal to the valency
    Download  amath.kaist.ac.kr
    Let be a triangle-free distance-regular graph with diameter d 3, valency k 3 and intersection number a2 = 0. Assume has an eigenvalue with multiplicity k. We show that if for ...
    Kris Coolsaet, Aleksandar Jurisic, Jack H. Koolen
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    EJC
    2008
    85views Information Technology» more  EJC 2008»
    Grad and classes with bounded expansion I. Decompositions
    13 years 11 months ago
    Grad and classes with bounded expansion I. Decompositions
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    Abstract. We introduce classes of graphs with bounded expansion as a generalization of both proper minor closed classes and degree bounded classes. Such classes are based on a new ...
    Jaroslav Nesetril, Patrice Ossona de Mendez
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    EJC
    2008
    61views Information Technology» more  EJC 2008»
    On two-path convexity in multipartite tournaments
    13 years 11 months ago
    On two-path convexity in multipartite tournaments
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    Darren B. Parker, Randy F. Westhoff, Marty J. Wolf
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    EJC
    2008
    125views Information Technology» more  EJC 2008»
    Pooling spaces associated with finite geometry
    13 years 11 months ago
    Pooling spaces associated with finite geometry
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    3 Motivated by the works of Ngo and Du [H. Ngo, D. Du, A survey on combinatorial group testing 4 algorithms with applications to DNA library screening, DIMACS Series in Discrete Ma...
    Tayuan Huang, Kaishun Wang, Chih-wen Weng
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    EJC
    2008
    107views Information Technology» more  EJC 2008»
    Pattern classes of permutations via bijections between linearly ordered sets
    13 years 11 months ago
    Pattern classes of permutations via bijections between linearly ordered sets
    Download  www-circa.mcs.st-and.ac.uk
    Abstract. A pattern class is a set of permutations closed under pattern involvement or, equivalently, defined by certain subsequence avoidance conditions. Any pattern class X which...
    Sophie Huczynska, Nikola Ruskuc
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    EJC
    2008
    69views Information Technology» more  EJC 2008»
    The Ramsey numbers for stars of even order versus a wheel of order nine
    13 years 11 months ago
    The Ramsey numbers for stars of even order versus a wheel of order nine
    Download  math.nju.edu.cn
    For two given graphs G1 and G2, the Ramsey number R(G1, G2) is the smallest positive integer n such that for any graph G of order n, either G contains G1 or the complement of G co...
    Yunqing Zhang, Yaojun Chen, Kemin Zhang
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    EJC
    2008
    127views Information Technology» more  EJC 2008»
    Factorization formulas for MacDonald polynomials
    13 years 11 months ago
    Factorization formulas for MacDonald polynomials
    Download  hal.archives-ouvertes.fr
    The aim of this note is to give some factorisation formulas for different versions of the Macdonald polynomials when the parameter t is specialized at roots of unity, generalizing...
    François Descouens, Hideaki Morita
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