Mathlib v3 is deprecated. Go to Mathlib v4

Def is_free_groupoid.spanning_tree.End_is_free

Modification history

2022-06-15 23:36
src/group_theory/nielsen_schreier.lean
chore(*): Bump to Lean 3.43.0 (#14684) …
Modified is_free_groupoid.spanning_tree.End_is_freeView on Github →
2022-05-04 15:53
src/group_theory/nielsen_schreier.lean
feat(group_theory/free_group): is_free_group via `free_group X ≃* G` (#13633) …
Modified is_free_groupoid.spanning_tree.End_is_freeView 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.End_is_freeView on Github →