∫ Утверждение Mathlib
instFintypeOfNeZeroNat
Mathlib.GroupTheory.SpecificGroups.Dihedral
URI: https://scilib.ai/kg/mathlib#DihedralGroup.instFintypeOfNeZeroNat
∫ Утверждение Mathlib
Mathlib.GroupTheory.SpecificGroups.Dihedral
URI: https://scilib.ai/kg/mathlib#DihedralGroup.instFintypeOfNeZeroNat