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Theorem sub_eq_self

Modification history

2021-11-30 15:07
src/algebra/group/basic.lean
refactor(algebra/group/basic): Migrate `add_group` section into `group` section (#10532)
Deleted sub_eq_selfView on Github →
2021-03-23 15:29
src/algebra/group/basic.lean
chore(algebra/group/basic): dedup, add a lemma (#6810) …
Added sub_eq_selfView on Github →