This (paper) showed that an arbitrary I-semigroup is not satisfied with cancellation law and all real-bi-ideal of semigroup satisfied with cancellation law can not be I-semigroups at the same time.

本文证明了任意一个I 半群不满足消去律，而且满足消去律的半群的所有真双理想不可能同时都是群。

youdao

This (paper) showed that an arbitrary I-semigroup is not satisfied with cancellation law and all real-bi-ideal of semigroup satisfied with cancellation law can not be I-semigroups at the same time.

本文证明了任意一个I 半群不满足消去律，而且满足消去律的半群的所有真双理想不可能同时都是群。

youdao