摘要
运用ISI-Estrada指数的基本性质,利用图的顶点数和边数等图不变量给出了ISI-Estrada指数的一些上下界,并刻画了极值图,得到了二部图的ISI-Estrada指数的界以及ISI-Estrada指数与ISI能量之间的关系。
By using the basic properties of ISI-Estrada index,we establish lower and upper bounds for ISI-Estrada index in terms of the invariants of graph such as the number of vertices and edges,and characterize the extremal graphs.In addition,we give the bounds for ISI-Estrada index of the bipartite graph and obtain some connections between ISI-Estrada index and ISI energy.
作者
李海毓
高玉斌
LI Haiyu;GAO Yubin(School of Science,North University of China,Taiyuan 030051,China)
出处
《重庆理工大学学报（自然科学）》
CAS
北大核心
2022年第5期290-296,共7页
Journal of Chongqing University of Technology：Natural Science
基金
山西省自然科学基金项目(201901D211227)。
