Mathlib v3 is deprecated. Go to Mathlib v4

Theorem sorgenfrey_line.is_open_iff

Modification history

2023-05-30 23:18
counterexamples/sorgenfrey_line.lean
chore(archive + counterexamples): namespaces imo, theorems_100, counterexample, plus three more (#19129) …
Deleted sorgenfrey_line.is_open_iffView on Github →
2022-09-10 01:42
counterexamples/sorgenfrey_line.lean
feat(counterexamples/sorgenfrey_line): new file (#14820) …
Added sorgenfrey_line.is_open_iffView on Github →