Difference between revisions of "1st-countable space"
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A [[topological space]] ''X'' is said to be a '''1st-countable space''' if every point in ''X'' has a [[countable]] [[basis]]. | A [[topological space]] ''X'' is said to be a '''1st-countable space''' if every point in ''X'' has a [[countable]] [[basis]]. | ||
| − | [[ | + | ==See also== |
| + | *[[2nd-countable space]] | ||
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| + | [[Category:Topology]] | ||
Latest revision as of 00:38, July 13, 2016
A topological space X is said to be a 1st-countable space if every point in X has a countable basis.