设 IOn和POn分别是集合X n={1,2,…,n}上的保序部分单变换半群和保序部分变换半群。文章刻画了 I On到 PO n的所有同态。%Let IOn and POn respectively denote the order-preserving partial single transformation semigroup and order-preserving partial transformation semigroup on Xn={1 ,2 ,… ,n}.This paper described all homomorphism from IOn to POn .
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