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On a conjecture about the commuting graphs of finite matrix rings

机译:关于有限矩阵环的交换图的一个猜想

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摘要

Let R be a noncommutative ring with unity. The commuting graph of R, denoted by Gamma(R), is a graph whose vertices are noncentral elements of R and two distinct vertices x and y are adjacent if xy = yx. Let F be a finite field and n = 2. It is conjectured by Akbari, Ghandehari, Hadian and Mohammadian in 2004 that if Gamma(R) congruent to Gamma(M-n(F)), then R congruent to M-n(F). In this paper, we prove the conjecture whenever n is of the form 2(k)3(l) with k not equal 0. (C) 2018 Elsevier Inc. All rights reserved.
机译:令R为具有单位的非交换环。 R的换向图由Gamma(R)表示,它的顶点是R的非中心元素,并且如果xy = yx,则两个不同的顶点x和y相邻。令F为有限域且n> =2。Akbari,Ghandehari,Hadian和Mohammadian于2004年推测,如果Gamma(R)等于Gamma(M-n(F)),则R等于M-n(F)。在本文中,只要n的形式为2(k)3(l),且k不等于0,我们就证明了猜想。(C)2018 Elsevier Inc.保留所有权利。

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