讨论了Ehresmann半群上包含于广义格林关系U中的最大同余μ.证明了关于任意Ehresmann半群(S,U),商半群((S,U)/μ,U/μ)仍为Ehresmann半群.给出了商半群同构于半格U的一些等价条件,揭示了这类Ehresmann半群的一些结构信息.
In this paper, the maximum congruence μ contained in the generalized Green's relation μ on an Ehresmann semigroup (S, U) has been considered. It is proved that for any Ehresmann semigroup (S, U), the quotient semigroup ((S, U)/,μ, U/μ) is also Ehresmannian. Moreover, some equivalent conditions for the quotient semigroup to be isomorphic with the semilatice U are given, which reveal some structural information of this kind of Ehresmann semigroups.