This paper discusses the presentation of the distance - preserving transformation of semigroups by means of idempotents and quasi - idempotents generate subsemigroup. That is to give both generation set and define relationship.%讨论了保距变换半群中由幂等元与拟幂等元生成的子半群的表示,即给出了该类子半群的生成集与定义关系。
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