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《山东大学学报(理学版)》 ›› 2024, Vol. 59 ›› Issue (10): 101-106.doi: 10.6040/j.issn.1671-9352.0.2023.048

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积运算符号图的谱

方子强1(),李龙捷1,任海珍1,2,3,*()   

  1. 1. 青海师范大学数学与统计学院, 青海 西宁 810008
    2. 藏文信息处理与应用国家重点实验室, 青海 西宁 810008
    3. 高原科学与可持续发展研究院, 青海 西宁 810008
  • 收稿日期:2023-02-13 出版日期:2024-10-20 发布日期:2024-10-10
  • 通讯作者: 任海珍 E-mail:15013579391@163.com;renhaizhen@qhnu.edu.cn
  • 作者简介:方子强(2000—),男,硕士研究生,研究方向为代数图论. E-mail: 15013579391@163.com
  • 基金资助:
    青海省自然科学基金资助项目(2020-ZJ-924);国家自然科学基金资助项目(12161073)

Spectra of product operation signed graphs

Ziqiang FANG1(),Longjie LI1,Haizhen REN1,2,3,*()   

  1. 1. Department of Mathematics and Statistics, Qinghai Normal University, Xining 810008, Qinghai, China
    2. The State Key Laboratory of Tibetan Information Processing and Application, Xining 810008, Qinghai, China
    3. Academy of Plateau, Science and Sustainability, Xining 810008, Qinghai, China
  • Received:2023-02-13 Online:2024-10-20 Published:2024-10-10
  • Contact: Haizhen REN E-mail:15013579391@163.com;renhaizhen@qhnu.edu.cn

摘要:

对图中的每条边标记正边或负边, 这样的图称为符号图。给出符号图的积运算(对称积、直积、半强积、强积)的定义, 得到这些积运算符号图邻接矩阵的张量形式, 并得到积运算(直积、半强积、强积)符号图的邻接谱。

关键词: 符号图, 符号图的积运算, 邻接矩阵, 邻接谱

Abstract:

A graph whose edges are labeled either as positive or negative is called a signed graph. The product operations, i.e. symmetric product, direct product, semi-strong product and strong product, of signed graphs are given, respectively. The adjacency matrices of these product operation signed graphs in tensor form are obtained, and some relations on the eigenvalues of signed graphs on product operations (direct product, semi-strong product, strong product) are also formulated.

Key words: signed graph, product operation of signed graph, adjacency matrix, adjacency spectrum

中图分类号: 

  • O157.5
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