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Theorem subtype.subsingleton

Modification history

2022-08-16 10:36
src/logic/basic.lean
chore(*): restore `subsingleton` instances and remove hacks (#16046) …
Deleted subtype.subsingletonView on Github →
2021-07-01 07:48
src/logic/basic.lean
feat(logic/basic): subtype.subsingleton (#8138)
Added subtype.subsingletonView on Github →