List edge and list total colorings of planar graphs without short cycles

  • Authors:
  • Bin Liu;Jianfeng Hou;Guizhen Liu

  • Affiliations:
  • School of Mathematics, Shandong University, Jinan, Shandong 250100, P.R. China;School of Mathematics, Shandong University, Jinan, Shandong 250100, P.R. China;School of Mathematics, Shandong University, Jinan, Shandong 250100, P.R. China

  • Venue:
  • Information Processing Letters
  • Year:
  • 2008

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Abstract

Let G be a planar graph with maximum degree @D(G). We use @g"l^'(G) and @g"l^''(G) to denote the list edge chromatic number and list total chromatic number of G, respectively. In this paper, it is proved that @g"l^'(G)=@D(G) and @g"l^''(G)=@D(G)+1 if @D(G)=6 and G has neither C"4 nor C"6, or @D(G)=7 and G has neither C"5 nor C"6, where C"k is a cycle of length k.