Theorem Subgroup.isRegularAtInfty_of_neg_one_mem

Modification history

2025-11-28 11:46
Mathlib/NumberTheory/ModularForms/Cusps.lean
feat(NumberTheory/ModularForms): adjoin -1 to a subgroup (#30649) …
Added Subgroup.isRegularAtInfty_of_neg_one_memView on Github →