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Theorem free_group.sum.inv

Modification history

2021-02-13 07:17
src/group_theory/free_group.lean
chore(group_theory/free_group): clean up unnecessary lemmas (#6200) …
Deleted free_group.sum.invView on Github →
2018-04-25 14:28
algebra/free_group.lean
feat(algebra): add free groups (#89)
Added free_group.sum.invView on Github →