开集基,open set basis

1)open set basis
开集基
例句>>

2)fundamental open set
基本开集

3)fundamental open increasing set
基本开增集

4)the open set relative to a subbase
关于子基的开集

5)open set
开集
1.
Open set and closed aggregate in Function of Read VariaNe;
实变函数中的开集与闭集


2.
This paper studies the composition of the open sets in Rn spaces and obtains the theorem of the composition of the open sets in Rn spaces.
本文研究了n维欧式空间Rn上开集存在的形式,并把R1的开集构造定理推广到了Rn上。


3.
In point set topological theory, open set and neighborhood are the basic concept.
在点集拓扑理论中,开集、邻域等是最基本的概念。


更多例句>>

6)a-open set
a-开集
1.
Definition of the a-open set and the a-closed set in LF-topological spaces given,efforts are made to define the a- connectedness by means of a-open sets,following which a probe into some of its basic properties and equivalent depiction is done as well.
在LF-拓扑空间中定义了a-开集和a-闭集,并借助a-开集定义了a-连通,研究了它的一些基本性质和等价刻画。




补充资料：开集


开集
open set

　　开集【雌..就;。了盆p‘noe姗。欲cT加]，拓扑空间中的 该空间的拓扑(见拓扑结构(拓扑)(t俄力吻灿1sto义t理re(tQI扣10gy)))的一个元素.更明确地说，设拓扑空间(X，动的拓扑;定义为集X的子集系T，使得l)X任:，必‘T;2)如果o，。:，i二l，2，则0，自0:“;;3)如果o二任T，:〔级，则U{0:::“吸}e:.于是，空间(X，:)中的开集(openset)就是拓扑:的元素，并且只是这些元素. E .A.nacb几王K.撰
　　
说明：补充资料仅用于学习参考，请勿用于其它任何用途。

开集基,open set basis