It is well known that congruences on regular semigroups are good.
众所周知，正则半群上的同余都是好同余。
In addition, we also consider primitive elements of abundant semigroups.
另外，也研究了富足半群的本原元。
Left regular semigroups, regular subsets and GV-semigroups are studied in this paper.
本文主要研究了左正则半群，正则子集以及GV -半群。
In this article, we investigate H-related congruences on completely regular semigroups.
本文研究了完全正则半群上的H -相关同余。
On account to cannot be semigroups, so cannot be left (right) zero semigroups absolutely.
因为不能作成半群，故更不可能作成左(右)零半群。
A new computer algorithm for the finite semigroups with a known partial structure is given.
给出了确定局部结构已知的有限半群的推理法则，提出了一种新的计算机算法。
A new computer algorithm for the finite semigroups with a known partial structure is given.
给出了确定局部结构已知的有限半群的推理法则，提出了一种新的计算机算法。
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