Countably generated space: Difference between revisions
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A topological space is called countable generated if V included in X is closed whenever for each countable subspace U of X V intersect U is closed in U. |
A topological space is called countable generated if V included in X is closed whenever for each countable subspace U of X V intersect U is closed in U. |
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All borel sets are countably generated. |
All borel sets are countably generated. |
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Revision as of 01:50, 7 November 2006
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A topological space is called countable generated if V included in X is closed whenever for each countable subspace U of X V intersect U is closed in U.
All borel sets are countably generated.
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