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Theorem
category_theory.subgroupoid.is_normal.conj'
Modification history
2022-10-14 06:45
src/category_theory/groupoid/subgroupoid.lean
feat(category_theory/groupoid/subgroupoid): subgroupoids and basic properties (#16742) …
Added
category_theory.subgroupoid.is_normal.conj'
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