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Slides

  • Partitions of graphs with bounded maximum average degree
    pdf file
    Graph Theory 2011
    Kolding,
    Denmark
    Thursday April 28 - Sunday May 1, 2011
  • Near-colorings and Steinberg conjecture
    pdf file
    Department of Mathematics,
    Zhejiang Normal University,
    Jinhua, China
    October 13, 2011
  • Acyclic k-choosability of planar graphs
    pdf file
    Dept. Mathematics
    Sun Yat-sen University
    Kaoshiung
    Taiwan.
    February 26, 2010
  • Homomorphisms of sparse graphs to small graphs
    pdf file
    Graph Theory 2009
    Fredericia,
    Denmark
    Thursday November 26 - Sunday November 29, 2009
  • Star coloring of graphs
    pdf file
    CID 2009
    Colourings, Independence and Domination
    13th WORKSHOP ON GRAPH THEORY
    September 20-25, 2009, Szklarska Poreba,
    POLAND
  • On the injective chromatic number of graphs
    pdf file
    CanaDAM
    May 28-31, 2007
    Banff, Alberta
    Canada
  • Shortest Cycle Cover
    pdf file
    Graph Theory 2005,
    Nyborg
    Denmark
    December 1-4, 2005

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