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Theorem is_free_group.ext_hom

Modification history

2022-05-04 15:53
src/group_theory/is_free_group.lean
feat(group_theory/free_group): is_free_group via `free_group X ≃* G` (#13633) …
Modified is_free_group.ext_homView on Github →
2021-04-10 06:53
src/group_theory/is_free_group.lean
feat(group_theory/is_free_group): promote `is_free_group.lift'` to an equiv (#7110) …
Added is_free_group.ext_homView on Github →