∫ Утверждение Mathlib
map_id_apply
Mathlib.GroupTheory.FreeAbelianGroup
URI: https://scilib.ai/kg/mathlib#FreeAbelianGroup.map_id_apply
∫ Утверждение Mathlib
Mathlib.GroupTheory.FreeAbelianGroup
URI: https://scilib.ai/kg/mathlib#FreeAbelianGroup.map_id_apply