The Number of Idempotent Elements in Symmetric Semigroup Tn
Abstract
The main purpose of this paper to find the number of the idempotent elements in sym Tn Semigroup . The problem of finding the number of idempotent elements in the symmetric semigroup is solved by using the partitions of an N-set ;we have found that : Such that P(b1, … ,bn) is the number of partition for a given partition and by parts we mean the parts for the given partition .Some other results concerning Un have been established .
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