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countable_base_for_a_topology [2014/10/29 20:12] nikolaj old revision restored (2014/10/29 20:10) |
countable_base_for_a_topology [2014/10/29 20:13] nikolaj |
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| ==== Discussion ==== | ==== Discussion ==== | ||
| - | A base $B$ for a topology is a collection its open sets, which suffice to cover any other open set. | ||
| - | |||
| ==== Parents ==== | ==== Parents ==== | ||
| === Context === | === Context === | ||
| [[Topological space]] | [[Topological space]] | ||
| === Subset of === | === Subset of === | ||
| - | [[Base for a topology]], [[Countable]] | + | [[Base for a topology]], [[Countable set]] |
