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探索对奇边优美差全着色封闭的图格

Graphic Lattices Having the Closeness of W-type Colorings

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【作者】 张明军杨见青姚兵

【Author】 ZHANG Mingjun;YANG Jianqing;YAO Bing;School of Information Engineering and Artificial Intelligence,Lanzhou University of Finance and Economics;Key Laboratory of E-Business Technology and Application of Gansu Province;College of Mathematics and Statistics, Northwest Normal University;

【机构】 兰州财经大学信息工程与人工智能学院甘肃省电子商务技术与应用重点实验室西北师范大学数学与统计学院

【摘要】 为深入拓扑编码的研究,定义了新的图全标号和图全着色:(集有序)奇边优美差全标号/全着色,孪生(集有序)奇边优美差全标号/全着色。证明了若偶图T承认集有序奇优美标号,则给偶图T添加m片叶子后得到的偶图T~*承认一个奇边优美差全着色;每棵树承认一个奇边优美差全着色。定理的证明均可转化为可行、有效的算法。为建立随机着色的图格,给出随机添加叶子的奇边优美差全着色算法和一致-k~*优美差算法,建立了对奇边优美差全着色封闭的一致-k~*优美差图格、孪生一致-(k~*,n~*)优美差图格,以及一个图格同态到另一个图格的图格同态。

【Abstract】 For deeply investigating topological coding,we define new graph total labelings/total colorings:(set-ordered) odd-edge graceful-difference total labelings/total colorings,twin (set-ordered) odd-edge graceful-difference total labelings/total colorings.We prove two results as follows:If bipartite graph T admits a set-ordered odd-graceful labeling,then the bipartite graph T~*obtained by adding m leaves to T admits an odd-edge graceful-difference total coloring;Each tree admits an odd-edge graceful-difference total coloring.For building randomly graph lattices,we present the algorithm of odd-edge graceful-difference total coloring based on adding randomly leaves and the uniformly k~*graceful-difference algorithm,and make uniformly k~*graceful-difference graph lattices,twin uniformly (k~*,n~*) graceful-difference graph lattices,as well as a graphic lattice is homomorphism to another graphic lattice,called graphic-lattice homomorphism.

【基金】 国家自然科学基金(61662066);兰州财经大学高等教育研究项目(LJZ202309);兰州财经大学科研资助项目(Lzufe2022B-002);兰州财经大学中国西北金融研究中心项目(JYYZ201905)~~
  • 【文献出处】 工程数学学报 ,Chinese Journal of Engineering Mathematics , 编辑部邮箱 ,2024年02期
  • 【分类号】O157.5
  • 【下载频次】24
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