Abstract Let (A;, , 0) be a finite MV-algebra, and (A;, 0) be the associated semigroup. The zero-divisor graph (A) of A is a simple graph with the set of vertices align* &V ( (A) ) =\x A \{0\ (~y A\0\) ~x~~y=0\}, align* and the set of edges E ( (A) ) =the edge with ends x and y (x, y A \{0\, x y) ~x~ ~y=0}. In this paper, some invariants (such as domination parameters, isomorphism problems, the chromatic number and the clique number, perfectness, etc. ) of (A) are discussed. We prove that (A) (B) implies that A B when A and B are finite MV-algebras with |A|=|B| 5. Also, for a finite MV-algebra A, we obtain that the chromatic number of (A) equals the clique number of (A), and characterize the perfectness of (A).
Wang et al. (Thu,) studied this question.
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