The paper claims a complete description of automorphisms of zero-divisor digraphs of matrix semirings over antirings, but the proof uses a false lemma about twin vertices.
Beck, Coloring of commutative rings, J
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The automorphism group of the zero-divisor digraph of matrices over an antiring
The paper claims a complete description of automorphisms of zero-divisor digraphs of matrix semirings over antirings, but the proof uses a false lemma about twin vertices.