您要查找的是不是：
- L-闭包空间L-closure spaces
- LF闭包空间L - fuzzy closure space
- 空间space
- 正规L-闭包空间normal L-closure spaces
- 闭obstruct
- 乘积L-闭包空间product L- closure space
- 拟离散闭包空间Quasi-discrete closure space
- 证明了关于L-闭包空间的Urysohn引理。Urysohn lemma on L-closure spaces is valid.
- 闭包closure
- 闭包有限的closure finite
- 凹闭包concave closure
- 闭包代数closure algebra
- 闭包假设closure assumption
- 闭包算子closure operator
- 闭包条件closure condition
- 闭包问题closure problem
- 闭包性质closure property
- 传递闭包transitive closure
- 闭包关系closure relation
- 闭包系统closure system
