Mathlib Map

Structures · Algebra

Subgroup.HasDetPlusMinusOne

Typeclass saying that a subgroup of GL(2, ℝ) has determinant contained in {±1}. Necessary so that the typeclass system can detect when the slash action is multiplicative.

Defined in
Mathlib.NumberTheory.ModularForms.ArithmeticSubgroups
Shape
One type argument · adds det_eq

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Extended by0

Nothing extends this class yet.

Concrete types that are instances1

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Assumed by79

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