On the spectral radius, energy and Estrada index of the Sombor matrix of graphs

Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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JR_COMB-12-4_002

تاریخ نمایه سازی: 25 آبان 1401

Abstract:

Let G be a simple undirected graph with vertex set V(G)=\{v_۱, v_۲,\ldots,v_n\} and edge set E(G). The Sombor matrix \mathcal{S}(G) of a graph G is defined so that its (i,j)-entry is equal to \sqrt{d_i^۲+d_j^۲} if the vertices v_i and v_j are adjacent, and zero otherwise, where d_i denotes the degree of vertex v_i in G. In this paper, lower and upper bounds on the spectral radius, energy and Estrada index of the Sombor matrix of graphs are obtained, and the respective extremal graphs are characterized.

Authors

Zhen Lin

School of Mathematics and Statistics, Qinghai Normal University, ۸۱۰۰۰۸, Xining, P. R. China The State Key Laboratory of Tibetan Intelligent Information Processing and Application, Qinghai Normal University, ۸۱۰۰۰۸, Xining, P. R. China

Ting Zhou

School of Mathematics, China University of Mining and Technology, ۲۲۱۱۱۶, Xuzhou, P. R. China

Lianying Miao

School of Mathematics, China University of Mining and Technology, ۲۲۱۱۱۶, Xuzhou, P. R. China

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