华东师范大学学报(自然科学版) ›› 2020, Vol. 2020 ›› Issue (1): 51-57.doi: 10.3969/j.issn.1000-5641.201811045

• 数学 • 上一篇    下一篇

基于含圈非连通图优美性的拓扑图密码

牟亚蓉, 刘信生, 姚兵   

  1. 西北师范大学 数学与统计学院, 兰州 730070
  • 收稿日期:2018-11-21 发布日期:2020-01-13
  • 通讯作者: 姚兵,男,教授,研究方向为图着色与标号、复杂网络及优化.E-mail:yybb918@163.com E-mail:yybb918@163.com
  • 基金资助:
    国家自然科学基金(61163054,61363060,61662066)

Topological graph passwords based on the gracefulness of disconnected graphs with circles

MU Yarong, LIU Xinsheng, YAO Bing   

  1. College of Mathematics and Statistics, Northwest Normal University, Lanzhou 730070, China
  • Received:2018-11-21 Published:2020-01-13

摘要: 图的标号是图论的一个重要分支,从非连通图入手,证明了两类非连通图G=(C4Kr)∪∪t=1kKm,ntG=(C4Kr)∪K1,n∪∪t=1kTt都具有优美标号.且证明方法能够算法化,为非连通图应用于网络提供了可行的理论保证.

关键词: 非连通图, 完全二部图, 优美标号

Abstract: Graph labeling is an important branch of graph theory. We use disconnected graphs to start our study, and show that disconnected graphs G = (C4, Kr)∪∪t=1kKm,nt and G = (C4, Kr)∪K1,n∪∪t=1kTt allow graceful labelings. Algorithms can be used to provide a theoretical basis for proving the application of disconnected graphs to networks.

Key words: disconnected graphs, complete bipartite graphs, graceful labeling

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