OAI/Geometry/EinsteinFour/ScalarH2Closure.lean

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Passing the first and second weak derivatives through strong L2 limits. This closes the nonlinear H2 calculation after its explicit product limits.

  1. theorem OAI.PositiveEinsteinFour.Geometry.scalar_L2_weak_derivative_limit line 22
  2. theorem OAI.PositiveEinsteinFour.Geometry.scalar_H2_of_strong_jets line 36

    Source documentation

    Strong convergence of the two jets supplies H2 for their value limit.

    theorem scalar_H2_of_strong_jets (f : ℕ → L2) (G : Fin 4 → ℕ → L2)
        (H : Fin 4 → Fin 4 → ℕ → L2) (u : L2) (g : Fin 4 → L2) (h : Fin 4 → Fin 4 → L2)
        (hf : Tendsto f atTop (𝓝 u))
        (hg : ∀ i, Tendsto (G i) atTop (𝓝 (g i)))
        (hh : ∀ i j, Tendsto (H i j) atTop (𝓝 (h i j)))
        (hD : ∀ n i, scalarCoordinateDerivative i (f n : T) = (G i n : T))
        (hDD : ∀ n i j, scalarCoordinateDerivative i (G j n : T) = (H i j n : T)) :
        MemSobolev 2 2 (u : T) := by
    …

    Mentions: OAI.PositiveEinsteinFour.Geometry.scalarCoordinateDerivative