Abstract

AbstractThe undirected power graph $$\G\(S)$$ G ( S ) of a semigroup S is an undirected graph with vertex set S where two vertices $$u,vS$$ u , v $ın$ S are adjacent if and only if there is a positive integer m such that $$u^\m\=v$$ u m = v or $$v^\m\=u$$ v m = u . Here, we investigate the power graphs of a class of abelian groups and answer, in this case, the question whether or not the power graph is Hamiltonian.

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