Research articles
ScienceAsia (): 482-487 |doi:
10.2306/scienceasia1513-1874...482
Some results on the non-commuting graph of a finite
group
K. Moradipoura,*, Sh. Ilangovanb, S. Rashidc
ABSTRACT: Let G be a metacyclic p-group, and let Z(G) be its center. The non-commuting graph ΓG of a metacyclic pgroup G is defined as the graph whose vertex set is G−Z(G), and two distinct vertices x and y are connected by an edge
if and only if the commutator of x and y is not the identity. In this paper, we give some graph theoretical properties
of the non-commuting graph ΓG. Particularly, we investigate planarity, completeness, clique number and chromatic
number of such graph. Also, we prove that if G1 and G2 are isoclinic metacyclic p-groups, then their associated graphs
are isomorphic.
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| a |
Department of Mathematics, Faculty of Khorramabad, Lorestan Branch,
Technical and Vocational University, Iran |
| b |
The University of Nottingham Malaysia Campus Jalan Broga, 43500 Semenyih Selangor Darul Ehsan,
Malaysia |
| c |
Department of Mathematics, College of Basic Sciences, Yadegar-e-Imam Khomeini (RAH) Branch,
Islamic Azad University, Tehran, Iran |
* Corresponding author, E-mail: kayvanmrp@yahoo.com
Received 14 Apr 2019, Accepted 20 Aug 2019
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