OAI/Analysis/KadisonKastler/RegularIntervalAverages.lean

GitHub source file

5 declarations, 0 contain sorry, 0 declared as axioms

Normalized interval averages

The boundary strip has fixed width for fixed compact test vectors. Dividing the localization average by the interval length therefore recovers every translation-invariant operator weakly.

  1. theorem OAI.KadisonKastler.norm_regularCut_translate_le line 24
  2. theorem OAI.KadisonKastler.integrable_localized_coefficient line 34
  3. theorem OAI.KadisonKastler.regularIntervalAverage_error_le line 55

    Source documentation

    The unnormalized error is confined to a fixed-width boundary strip.

    theorem regularIntervalAverage_error_le
        (T : RegularCoreHilbert H →L[ℂ] RegularCoreHilbert H)
        (hT : ∀ r : ℝ, Commute T (regularRightTranslation (H := H) (Multiplicative.ofAdd r) :
    …

    Mentions: OAI.KadisonKastler.RegularCoreHilbert, OAI.KadisonKastler.regularRightTranslation

  4. def OAI.KadisonKastler.regularNormalizedIntervalAverage line 93

    Source documentation

    The interval-length-normalized localization is a contraction on operators.

    def regularNormalizedIntervalAverage (n : ℕ)
        (T : RegularCoreHilbert H →L[ℂ] RegularCoreHilbert H) :
        RegularCoreHilbert H →L[ℂ] RegularCoreHilbert H :=
    …

    Mentions: OAI.KadisonKastler.RegularCoreHilbert

  5. theorem OAI.KadisonKastler.norm_regularNormalizedIntervalAverage_le line 100