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Theorem is_open_map_sigma

Modification history

2022-09-21 08:15
src/topology/constructions.lean
feat(topology/constructions): add/golf lemmas about `sigma` (#16571) …
Modified is_open_map_sigmaView on Github →
2019-09-07 05:32
src/topology/constructions.lean
feat(topology/constructions): distributivity of products over sums (#1059) …
Added is_open_map_sigmaView on Github →