闭包 (拓扑学)
Sign in to saveAlso known as set closure
in a topological space, the smallest closed set containing a given set
Wikidata facts
- Instance of
- closure operator
- Subclass of
- topological subspace
- Has parts of class
- adherent point
Show 4 more facts
- studied by
- general topology
- maintained by WikiProject
- WikiProject Mathematics
- described at URL
- www.spektrum.de/lexikon/mathematik/abgeschlossene-huelle/489
- facet of
- mathematical analysis
Sources (1)
via Wikidata · CC0
Article · 中文
閉包（英語：Closure）在拓扑学中是指，一个拓撲空間裡，子集S的闭包由S 的所有点及S 的極限點所組成的一個集合；直觀上來說，即為所有「靠近」S 的點所組成的集合。在子集S 的閉包內的點稱為S 的閉包點。闭包的概念在許多方面能與内部的概念相對比。
Abstract from DBpedia / Wikipedia · CC BY-SA