English
Integer powers on quotient are defined by a canonical instance mapping.
Русский
Целочисленные степени на факторе задаются каноническим отображением.
LaTeX
$$$\\text{Pow } c.Quotient \\mathbb{Z}$ defined by $x^n$ via quotient map$$
Lean4
/-- The integer power induced on the quotient by a congruence relation on a type with a
division. -/
@[to_additive existing AddCon.Quotient.zsmul]
instance zpowinst : Pow c.Quotient ℤ :=
⟨fun x z => Quotient.map' (fun x => x ^ z) (fun _ _ h => c.zpow z h) x⟩