Theorem CongruenceSubgroup.IsCongruenceSubgroup.finiteIndex

Modification history

2025-05-10 12:26
Mathlib/NumberTheory/ModularForms/CongruenceSubgroups.lean
feat(NumberTheory/ModularForms): GL2+ action is mdifferentiable (#24573) …
Added CongruenceSubgroup.IsCongruenceSubgroup.finiteIndexView on Github →