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Theorem lower_semicontinuous_iff_is_open

Modification history

2022-09-30 23:37
src/topology/semicontinuous.lean
feat(topology/semicontinuous): characterization by closed sets of semicontinuous maps to a linear order (#16442)
Deleted lower_semicontinuous_iff_is_openView on Github →
2021-05-27 00:46
src/topology/semicontinuous.lean
feat(topology/semicontinuous): basics on lower and upper semicontinuous functions (#7693) …
Added lower_semicontinuous_iff_is_openView on Github →