CongruenceSubgroup.conjGL

Subgroup (Matrix.SpecialLinearGroup (Fin 2) ℤ) → GL (Fin 2) ℝ → Subgroup (Matrix.SpecialLinearGroup (Fin 2) ℤ)

The subgroup SL(2, ℤ) ∩ g⁻¹ Γ g, for Γ a subgroup of SL(2, ℤ) and g ∈ GL(2, ℝ).

Defined in: Mathlib.NumberTheory.ModularForms.CongruenceSubgroups
Cited by: 4 results in Mathlib
Foundations: Depth 108 from the axioms · uses propext, Classical.choice, Quot.sound

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