As a generalization of quasi C semigroups, left semiregular orthogroups are defined in this paper.
作为拟C-半群的推广，本文定义了左半正则纯整群并半群，给出了它的左半织积结构。
Then we study the idempotent-separating congruences on the orthogroups with group kernel normal systems and give it a simple rep.
利用群核正规系讨论了纯正群的幂等元分离同余。
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