本文定义了具有中心幂等元的L-弱正则半群,研究了这类半群的代数结构.利用半群上的右同余L+和左同余R+,证明了半群S是一个具有中心幂等元的L-弱正则半群,当且仅当S是H-左可消幺半群的强半格.这推广了Clifford半群的相应结果.
Weakly L-regular semigroups with central idempotents are introduced and their algebraic structures are studied in this paper.By using a right congruence L+ and a left congruence R+ on a semigroup S,respectively,we show that a semigroup S is a weakly L-regular semigroup with central idempotents if and only if S is a strong semilattice of H-left cancellative monoids,which generalizes the corresponding results of Clifford semigroups in the class of regular semigroups.