Mathematics – Rings and Algebras
Scientific paper
2005-12-26
Mathematics
Rings and Algebras
10 pages
Scientific paper
In this paper, we determine the structures of zero-divisor semigroups whose
graph is $K_n + 1$, the complete graph $K_n$ together with an end vertex. We
also present a formula to calculate the number of non-isomorphic zero-divisor
semigroups corresponding to the complete graph $K_n$, for all positive integer
$n$.
Cheng Fan
Wu Tongsuo
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