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- W2082731610 abstract "Let Fq be a finite field with q elements, n(≥2) a positive integer, Matn(q) the set of all n×n matrices over Fq, R(n,q) the set of all rank one upper triangular matrices in Mat(n,q). The zero-divisor graph of Matn(q), written as Γ(Matn(q)), is a directed graph with vertex set all nonzero zero-divisors of Matn(q), and there is a directed edge from a vertex A to a vertex B, written as A→B, if and only if AB=0. In this paper, we determine the automorphisms of an induced subgraph, written as Γ(R(n,q)), of Γ(Matn(q)) with vertex set R(n,q). The main theorem of this article proves that a bijective map σ on R(n,q) with n≥3 is an automorphism of Γ(R(n,q)) if and only ifσ(X)=aXP−1[π(xij)]P,∀X=[xij]∈R(n,q), where aX∈Fq⁎ depends on X; P is an invertible upper triangular matrix; π is an automorphism of the field Fq, [π(xij)] denotes the matrix whose (i,j)-entry is π(xij)." @default.
- W2082731610 created "2016-06-24" @default.
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- W2082731610 date "2014-11-01" @default.
- W2082731610 modified "2023-10-18" @default.
- W2082731610 title "The group of automorphisms of a zero-divisor graph based on rank one upper triangular matrices" @default.
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- W2082731610 doi "https://doi.org/10.1016/j.laa.2014.07.041" @default.
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