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1)  Remote neighborhoods family
远域族
2)  r remote neighborhood family
r远域族
1.
The concepts of r remote neighborhood family and r- remote neighborhood family are defined by means of LF-r closed set in LF topological spaces.
在LF拓扑空间中借助LF-r闭集定义了r远域族与r-远域族,进一步引入r-Lindelff可数性和弱r-Lindelff可数性的概念,证明了r-Lindel可数性和弱r-Lindel可数性对于LF-r闭子集是遗传的,是r拓扑性质。
3)  ωδ-remote neighborhood family
ωδα-远域族
4)  a-p remote neighborhood family
a-P远域族
5)  Urysohn α-RF
Urysohnα-远域族
1.
The concepts of Urysohn-closedness and Urysohn α-RF and so on are introduced in LF topological spaces．The characterizations of Urysohn-closedness are studied by means of the notions of U-convergence of molecular nets, filters and ideals.
在LF拓扑空间中引入Urysohn闭性、Urysohnα-远域族等概念。
6)  a~--remote neighborhood family
α~-远域族
补充资料：远域
1.边远地区。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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