∫ Утверждение Mathlib
Gamma_is_cong_sub
Mathlib.NumberTheory.ModularForms.CongruenceSubgroups
URI: https://scilib.ai/kg/mathlib#CongruenceSubgroup.Gamma_is_cong_sub
∫ Утверждение Mathlib
Mathlib.NumberTheory.ModularForms.CongruenceSubgroups
URI: https://scilib.ai/kg/mathlib#CongruenceSubgroup.Gamma_is_cong_sub