A Note on Free Semigroups
Keywords:
External direct product, Freeness, Free Semigroups, 0-free semigroupAbstract
This paper reviews a class of semigroup, the free ones known as free semigroups. The different modes of definition ascribed to free semigroups, concept of freeness, it’s subsemigroups are examined. Presentation, constructions and examples of free semigroups and 0-free semigroups are given and properties inherent are presented. External direct products of free semigroups are also reviewed and presented.
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