Theorems · Definition · number theory

Subgroup.adjoinNegOne

{n : Type u_1} →
  [inst : Fintype n] →
    [inst_1 : DecidableEq n] → {R : Type u_2} → [inst_2 : Ring R] → Subgroup (GL n R) → Subgroup (GL n R)

Given a subgroup 𝒢 of GL n R, this is the subgroup generated by 𝒢 and -1.

Defined in

Mathlib.NumberTheory.ModularForms.ArithmeticSubgroups

Cited by

14 results in Mathlib

Foundations

Depth 84 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

FintypeDecidableEqRing