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Def is_free_groupoid.spanning_tree.tree_hom

Modification history

2022-01-09 18:06
src/group_theory/nielsen_schreier.lean
chore(*): update to 3.37.0c (#11325) …
Modified is_free_groupoid.spanning_tree.tree_homView on Github →
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.tree_homView on Github →