Note on structural properties of graphs

Autor: Arreola-Bautista Luis D., Reyna Gerardo, Romero-Valencia Jesús, Sigarreta José M.
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Open Mathematics, Vol 20, Iss 1, Pp 16-23 (2022)
Druh dokumentu: article
ISSN: 2391-5455
DOI: 10.1515/math-2021-0137
Popis: In this paper, we establish sufficient and necessary conditions for the existence of abelian subgroups of maximal order of a finite group GG, by means of its commuting graph. The order of these subgroups attains the bound c=∣[x1]∣+⋯+∣[xm]∣c=| \left[{x}_{1}]| \hspace{-0.25em}+\cdots +\hspace{-0.25em}\hspace{0.33em}| \left[{x}_{m}]| , where [xi]\left[{x}_{i}] denotes the conjugacy class of xi{x}_{i} in GG and mm is the smallest integer jj such that ∣[x1]∣+⋯+∣[xj]∣≥∣CG(xj)∣| \left[{x}_{1}]| \hspace{-0.25em}+\cdots +| \left[{x}_{j}]| \ge | {C}_{G}\left({x}_{j})| , where CG(xj){C}_{G}\left({x}_{j}) is the centralizer of xj{x}_{j} in GG.
Databáze: Directory of Open Access Journals