OAI/MathematicalPhysics/DefocusingNLS/Linear/SobolevLocalContinuousFlow.lean

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A jointly continuous local Sobolev solution map

  1. theorem OAI.DefocusingNLS.exists_continuous_sobolevInteractionFlow_on_ball line 14

    Source documentation

    Every bounded ball of initial data has a jointly continuous interaction flow on a common positive time interval. The flow solves the actual polynomial interaction equation.

    theorem exists_continuous_sobolevInteractionFlow_on_ball
        (k : ℝ) (hk : 6 < k) (m : ℕ) (R : ℝ) (hR : 0 ≤ R) :
        ∃ δ : ℝ, 0 < δ ∧ ∃ α : FourierL2 × ℝ → FourierL2,
          ContinuousOn α (closedBall 0 R ×ˢ Icc (-δ) δ) ∧
          ∀ f : FourierL2, ‖f‖ ≤ R → α (f, 0) = f ∧
            ∀ t ∈ Ioo (-δ) δ, HasDerivAt (fun s => α (f, s))
              (schrodingerInteractionField k hk m t (α (f, t))) t := by
    …

    Mentions: OAI.DefocusingNLS.FourierL2

  2. theorem OAI.DefocusingNLS.exists_continuous_maximalSobolevInteractionFlow_on_ball line 69

    Source documentation

    The local interaction map agrees with the maximal interaction flow on the common interval.

    theorem exists_continuous_maximalSobolevInteractionFlow_on_ball
        (k : ℝ) (hk : 6 < k) (m : ℕ) (R : ℝ) (hR : 0 ≤ R) :
        ∃ δ : ℝ, 0 < δ ∧
          (∀ f : FourierL2, ‖f‖ ≤ R →
            Ioo (-δ) δ ⊆ maximalSobolevInteractionDomain k hk m f) ∧
          ContinuousOn (fun p : FourierL2 × ℝ => maximalSobolevInteractionFlow k hk m p.1 p.2)
            (closedBall 0 R ×ˢ Ioo (-δ) δ) := by
    …

    Mentions: OAI.DefocusingNLS.FourierL2, OAI.DefocusingNLS.maximalSobolevInteractionDomain

  3. theorem OAI.DefocusingNLS.exists_continuous_maximalSobolevSchrodingerFlow_on_ball line 98

    Source documentation

    The actual maximal physical flow is jointly continuous in the datum and time on one common interval for every bounded ball of initial data.

    theorem exists_continuous_maximalSobolevSchrodingerFlow_on_ball
        (k : ℝ) (hk : 6 < k) (m : ℕ) (R : ℝ) (hR : 0 ≤ R) :
        ∃ δ : ℝ, 0 < δ ∧
          (∀ f : FourierL2, ‖f‖ ≤ R →
            Ioo (-δ) δ ⊆ maximalSobolevInteractionDomain k hk m f) ∧
          ContinuousOn (fun p : FourierL2 × ℝ => maximalSobolevSchrodingerFlow k hk m p.1 p.2)
            (closedBall 0 R ×ˢ Ioo (-δ) δ) := by
    …

    Mentions: OAI.DefocusingNLS.FourierL2, OAI.DefocusingNLS.maximalSobolevInteractionDomain