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Theorem is_free_groupoid.spanning_tree.loop_of_hom_eq_id

Modification history

2021-04-24 19:36
src/group_theory/nielsen_schreier.lean
feat(group_theory/nielsen_schreier): subgroup of free group is free (#6840) …
Added is_free_groupoid.spanning_tree.loop_of_hom_eq_idView on Github →