OAI/Geometry/RCD/Heat/HeatVarianceContinuity.lean

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3 declarations, 0 contain sorry, 0 declared as axioms

Continuity and endpoint identities for the heat variance pairing

  1. theorem OAI.RegularPointCoordinates.heatSquarePairing_continuous line 17

    Source documentation

    The variance pairing is continuous, including at both heat endpoints.

    theorem heatSquarePairing_continuous (f w : Lp ℝ 2 μ) (C : ℝ≥0)
        (hf : ∀ᵐ x ∂μ, |f x| ≤ C) (T : ℝ) :
        Continuous (heatSquarePairing μ hQ f w C hf T) := by
    …

    Mentions: OAI.RegularPointCoordinates.heatSquarePairing

  2. theorem OAI.RegularPointCoordinates.heatSquarePairing_eq_integral line 31

    Source documentation

    Integral representation with the actual heat functions.

    theorem heatSquarePairing_eq_integral (f w : Lp ℝ 2 μ) (C : ℝ≥0)
        (hf : ∀ᵐ x ∂μ, |f x| ≤ C) (T s : ℝ) :
        heatSquarePairing μ hQ f w C hf T s =
          ∫ x, heatAt μ hQ s w x*(heatAt μ hQ (T-s) f x)^2 ∂μ := by
    …

    Mentions: OAI.RegularPointCoordinates.heatSquarePairing, OAI.RegularPointCoordinates.heatAt

  3. theorem OAI.RegularPointCoordinates.heatSobolev_iterate line 42

    Source documentation

    The heat semigroup identity holds in the actual Sobolev space.

    theorem heatSobolev_iterate (f : Lp ℝ 2 μ) (s t : ℝ) (hs : 0 < s) (ht : 0 < t) :
        heatSobolev μ hQ s hs (SobolevSpace.toLp μ hQ (heatSobolev μ hQ t ht f)) =
          heatSobolev μ hQ (s+t) (add_pos hs ht) f := by
    …

    Mentions: OAI.RegularPointCoordinates.heatSobolev, OAI.RegularPointCoordinates.SobolevSpace.toLp