摘要
在L-sm ooth拓扑空间中借助于r-预开集与r-预闭集引入了L-sm ooth预不定映射、L-sm ooth预不定开映射、L-sm ooth预不定闭映射及L-sm ooth预不定同构映射的概念,给出了它们的等价刻画,并在定理7中系统的讨论了它们之间的关系。
The concepts of L-smooth pre-irresolute, pre-irresolute open, pre-irresolute closed as well as pre-irresolute homomorphic mappings are introduced by means of r-preopen sets and r-preclosed sets. Their equivalent conditions are given and the relationships between them are systematically discussed in theorem 7.
出处
《甘肃科学学报》
2007年第2期25-28,共4页
Journal of Gansu Sciences
基金
陕西省教育厅专项基金(06JK152)
延安大学重点科研项目(yd2004-090)
