J4 ›› 2012, Vol. 47 ›› Issue (2): 60-64.

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On the vertex-distinguishing proper edge-coloring of K3,3∨Kt

GAO Yu-ping1, WANG Zhi-wen2, CHEN Xiang-en1*, YAO Bing1   

  1. 1. College of Mathematics and Information Science, Northwest Normal University, Lanzhou 730070, Gansu,  China;
    2. School of Mathematics and Computer Science, Ningxia University, Yinchuan 750021, Ningxia,  China
  • Received:2010-05-19 Online:2012-02-20 Published:2012-12-24

Abstract:

 A k-proper edge coloring of a simple graph G is called vertex-distinguishing if for two arbitrarily different vertices u and v, the set of colors assigned to the edges incident to u differs from the set of colors assigned to the edges incident to v. The minimum number of colors required for a vertex-distinguishing proper edge-coloring of a simple graph G is called the vertex-distinguishing proper edge chromatic number of G and denoted by χ′s(G). Vertex-distinguishing proper edge colorings of K3,3∨Kt are discussed.

Key words:  proper edge coloring; vertex-distinguishing proper edge coloring; vertex-distinguishing proper edge chromatic number

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