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Theorem is_open.is_Gδ

Modification history

2020-11-11 13:39
src/topology/G_delta.lean
feat(measure_theory/borel_space): continuity set of a function is measurable (#4967) …
Modified is_open.is_GδView on Github →
2019-03-14 10:31
src/topology/metric_space/baire.lean
feat(topology/metric_space/baire): Baire theorem (#816)
Added is_open.is_GδView on Github →