toMeasurable_def — Mathlib

English

Describes the hull t ⊇ s with μ(t) = μ(s) and the hull can serve as a canonical measurable superset with preserved measure.

Русский

Определение оболочки: существует измеримое надмножество t, содержащее s, с μ(t)=μ(s).

LaTeX

$$toMeasurable(μ,s) ⊇ s ∧ μ(toMeasurable(μ,s)) = μ(s)$$

Lean4

theorem toMeasurable_def : eta_helper Eq✝ @toMeasurable.{} @(delta% @definition✝) :=
  by
  intros
  delta toMeasurable
  rw [show wrapped✝ = ⟨@definition✝.{}, rfl✝⟩ from Subtype.ext✝ wrapped✝.2.symm✝]
  rfl

Похожие утверждения