第一可數空間
Sign in to saveAlso known as first axiom of countability
topological space in which every point admits a countable neighborhood basis
Wikidata facts
- Subclass of
- topological space
Show 1 more fact
- maintained by WikiProject
- WikiProject Mathematics
Sources (1)
via Wikidata · CC0
Article · 中文
在拓撲學上，第一可數空間（First-countable space）是指有可數的邻域基的拓撲空間，即對於，存在的開鄰域序列，使得對於任意的鄰域，存在整數使得。
Abstract from DBpedia / Wikipedia · CC BY-SA