【摘要】 弱型B半群是在半富足半群范围内的广义逆半群.该文利用弱左型B半群真覆盖的定义，给出了弱左型B半群真覆盖的相关性质.特别地，得到了相应于弱左型B半群作用在幂单幺半群上的真覆盖的结构定理.更多还原

【Abstract】 Weakly type B semigroups are generalized inverse semigroups in the rage of semi-abundant semigroups.Some properties of a proper cover of a weakly left type B semigroup are given by using the definition of the proper cover of a weakly left type B semigroup.In particular, some structure theorems corresponding to the proper cover of a weakly left type B semigroup acting on a unipotent monoid are obtained.更多还原