second-countable space
(Q1363919)
topological space whose topology admits a countable base
topological space whose topology admits a countable base
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Current Data About
second-countable space
| (P279) |
(Q680081)
(Q926996) (Q936155) |
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| (P2534) |
\exists\mathcal B\subset\operatorname{Open}(X)\colon|\mathcal B|\le\aleph_0\land\forall U\in\operatorname{Open}(X)\exists B\in\mathcal B\colon B\subset U
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| (P6104) |
(Q8487137)
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| (P7235) |
X
\mathcal B
\aleph_0
\operatorname{Open}(X)
U
\land
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other details
| aliases |
completely separable space second axiom of countability |
| description | topological space whose topology admits a countable base |
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