Orthogonal Inner Product Graphs over Finite Fields of Odd Characteristic

Shouxiang Zhao, Hengbin Zhang, Jizhu Nan, Gaohua Tang and Xuanlong Ma

Journal of Mathematics, 2023, vol. 2023, 1-12

Abstract: Let Fq be a finite field of odd characteristic and 2ν+δ≥2 be an integer with δ=0,1, or 2. The orthogonal inner product graph Oi2ν+δ,q over Fq is defined, and a class of subgroup of the automorphism groups of Oi2ν+δ,q is determined. We show that Oi2ν+δ,q is a disconnected graph if 2ν+δ=2; otherwise, it is not. Moreover, we give necessary and sufficient conditions for two vertices and two edges of Oi2ν+δ,q, respectively, which are in the same orbit under the action of a subgroup of the automorphism group of Oi2ν+δ,q.

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jjmath:6811540

DOI: 10.1155/2023/6811540

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