吉林大学学报(理学版) ›› 2023, Vol. 61 ›› Issue (5): 1042-1050.

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一类单圈图的最小Randic能量

王智玉, 高玉斌   

  1. 中北大学 数学学院, 太原 030051
  • 收稿日期:2022-12-14 出版日期:2023-09-26 发布日期:2023-09-26
  • 通讯作者: 高玉斌 E-mail:ybgao@nuc.edu.cn

Minimum Randic Energy of a Class Kind of Unicyclic Graphs

WANG Zhiyu, GAO Yubin   

  1. School of Mathematics, North University of China, Taiyuan 030051, China
  • Received:2022-12-14 Online:2023-09-26 Published:2023-09-26

摘要: 考虑在圈Cg上的某一顶点连接一个星图St所组成的单圈图Cg∪St的Randic能量的极值问题, 利用Randic能量的定义和性质, 并结合图变换, 在该类单圈图中找到取得最小Randic能量的图.

关键词: Randic能量, 图变换, 单圈图, 特征多项式

Abstract: We considered the extreme problem of the Randic energy of unicyclic graphs Cg∪St composed of sticking a star graph St at a certain vertex on the circle Cg. Using the definition and properties of the Randic energy, and combined with graph transformations, we found the graph that obtained the minimum Randic energy in this class of unicyclic graphs CgSt.

Key words: Randic energy, graph transformation, unicyclic graph, characteristic polynomial

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