∫ Утверждение Mathlib
mk_eq_mk_of_mul_inv_mem
Mathlib.GroupTheory.PresentedGroup
URI: https://scilib.ai/kg/mathlib#PresentedGroup.mk_eq_mk_of_mul_inv_mem
∫ Утверждение Mathlib
Mathlib.GroupTheory.PresentedGroup
URI: https://scilib.ai/kg/mathlib#PresentedGroup.mk_eq_mk_of_mul_inv_mem