右(左)逆半群的半直积及圈积

Semidirect and Wreath Products of Left(Right)Inverse Monoids

给出了两个幺半群的半直积及圈积为右（左）逆半群的充分必要条件，从而推广了[2]中两个幺半群的半幺直积和圈积为逆半群的充分必要条件．

Necessary and sufficient conditions are detemined for the semidirect and wreath products of two monoids to be left(right)inverse monoids. Weaker sufficient conditions are obtained for the semidirect products of two monoids to be inverse monoids than those given in [2].