Regular order homomorphic mapping and regular continuity concepts are introduced by concepts of regular closed sets in LF topological spaces.
利用正则开（闭）集引入LF拓扑空间之间的几种正则序同态和几种正则连续性，并讨论了它们的性质及其相互关系。
The properties of the homomorphic images of rough subrings and rough ideals are obtained by discussing the variation of approximation operators under homomorphic mapping in the ring.
对同态映射下环中近似集合的变化规律进行了讨论，得到了粗糙子环、粗糙理想同态象的若干性质。
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