English

Diminished Sombor matrix, spectral radius, and energy of the graphs

Combinatorics 2025-08-12 v1

Abstract

Consider a simple graph GG with vertex set V={v1,v2,,vn}V = \{v_1, v_2, \ldots, v_n\} and edge set EE. The diminished Sombor matrix MDS(G)M_{DS}(G) is constructed such that its (i,j)(i, j) entry is di2+dj2di+dj\frac{\sqrt{d_i^2+d_j^2}}{d_i+d_j} if vertices vivjEv_iv_j \in E, and 00 otherwise, where did_i represents the degree of vertex viv_i. In this paper, we establish sharp bounds for the spectral radius, and energy of the Sombor matrix of graphs and identify the graphs that attain these extremal values.

Keywords

Cite

@article{arxiv.2508.06531,
  title  = {Diminished Sombor matrix, spectral radius, and energy of the graphs},
  author = {F. Movahedi},
  journal= {arXiv preprint arXiv:2508.06531},
  year   = {2025}
}