Mathlib v3 is deprecated. Go to Mathlib v4

Theorem is_free_groupoid.spanning_tree.tree_hom_eq

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.tree_hom_eqView on Github →