OAI/Geometry/RCD/Heat/HeatMassTimeContinuity.lean

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3 declarations, 0 contain sorry, 0 declared as axioms

Positive-time continuity and integrability of full heat mass

  1. theorem OAI.RegularPointCoordinates.cutoffHeatMassAt_continuousOn line 23

    Source documentation

    The finite positive Bochner measure may be singular; continuity follows from the actual joint kernel and the fixed compact cutoff.

    theorem cutoffHeatMassAt_continuousOn (M : PositiveBilinearMeasure X E) (x : X) (v : E) :
        ContinuousOn (fun t => ⟪v, cutoffHeatMassAt μ hQ hk hχ hc M t x v⟫_ℝ) (Ioi 0) := by
    …

    Mentions: OAI.RegularPointCoordinates.PositiveBilinearMeasure, OAI.RegularPointCoordinates.cutoffHeatMassAt

  2. theorem OAI.RegularPointCoordinates.cutoffAverageHeatMassAt_continuousOn line 39

    Source documentation

    Averaging in the first pole preserves the same positive-time continuity against the full Bochner measure.

    theorem cutoffAverageHeatMassAt_continuousOn (M : PositiveBilinearMeasure X E)
        (A : Set X) (hA : MeasurableSet A) (hbounded : Bornology.IsBounded A) (v : E) :
        ContinuousOn (fun t => ⟪v, cutoffAverageHeatMassAt μ hQ hk hχ hc M A hA hbounded t v⟫_ℝ)
          (Ioi 0) := by
    …

    Mentions: OAI.RegularPointCoordinates.PositiveBilinearMeasure, OAI.RegularPointCoordinates.cutoffAverageHeatMassAt

  3. theorem OAI.RegularPointCoordinates.cutoffAverageHeatMassAt_difference_intervalIntegrable line 56

    Source documentation

    Both terms in a long-time block are genuinely integrable.

    theorem cutoffAverageHeatMassAt_difference_intervalIntegrable
        (M : PositiveBilinearMeasure X E) (A : Set X) (hA : MeasurableSet A)
        (hbounded : Bornology.IsBounded A) (x : X) (v : E)
        {s t : ℝ} (hs : 0 < s) (hst : s ≤ t) :
        IntervalIntegrable (fun r => ⟪v, (cutoffAverageHeatMassAt μ hQ hk hχ hc M A hA hbounded r -
          cutoffHeatMassAt μ hQ hk hχ hc M r x) v⟫_ℝ) volume s t := by
    …

    Mentions: OAI.RegularPointCoordinates.PositiveBilinearMeasure, OAI.RegularPointCoordinates.cutoffAverageHeatMassAt, OAI.RegularPointCoordinates.cutoffHeatMassAt