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Theorem
topological_space.opens.map_iso_inv_app
Modification history
2019-04-16 07:19
src/category_theory/instances/Top/opens.lean
feature(category_theory/instances/Top/open[_nhds]): category of open sets, and open neighbourhoods of a point (merge #920 first) (#922) …
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topological_space.opens.map_iso_inv_app
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