机构地区: 西安建筑科技大学理学院数学系
出 处: 《数学学报(中文版)》 2011年第4期643-650,共8页
摘 要: 完全g-单半群是完全单半群和完全g-单半群在U-半富足半群类中的一个自然推广.本文证明了半群S是完全g-单半群,当且仅当S同构于幺半群T上的正规Rees矩阵半群M(T;I,A;P).这一结果不仅推广了完全单半群的著名Rees定理,而且推广了任学明和岑嘉评在2004年建立的完全g-单半群的一个结构定理. Completely J-simple semigroups are natural generalizations of completely simple semigroups and completely g*-simple semigroups. In this paper, it is proved that a semigroup S is completely J-simple if and only if S is isomorphic to a normal Rees matrix semigroup M(T; I, A; P) over a monoid T. This result not only generalizes the well-known Rees theorem of completely simple semigroups, but also extends the structure theorem given by Ren and Shum in 2004 of completely g*-simple semigroups.