OAI/MathematicalPhysics/DefocusingNLS/Certificates/PolynomialProjection.lean

GitHub source file

7 declarations, 0 contain sorry, 0 declared as axioms

Polynomial test functions for the weighted differential equation

  1. def OAI.DefocusingNLS.weightedPolynomialIntegrand line 11
  2. def OAI.DefocusingNLS.weightedPolynomialIntegral line 14
  3. def OAI.DefocusingNLS.weightedPolynomialFunctional line 17
  4. theorem OAI.DefocusingNLS.weightedPolynomialFunctional_apply line 32
  5. theorem OAI.DefocusingNLS.hasDerivAt_weightedPolynomialIntegrand line 36
  6. theorem OAI.DefocusingNLS.weightedPolynomialIntegral_derivative line 49
  7. theorem OAI.DefocusingNLS.weightedPolynomialIntegral_laguerre_operator line 74

    Source documentation

    Symmetry of the Laguerre differential operator against a smooth function.

    theorem weightedPolynomialIntegral_laguerre_operator (f f' f'' : ℝ → ℂ) (p : ℂ[X])
        (hd : ∀ t ∈ Ioi (0 : ℝ), HasDerivAt f (f' t) t)
        (hd' : ∀ t ∈ Ioi (0 : ℝ), HasDerivAt f' (f'' t) t)
        (hc : ContinuousWithinAt f (Ici 0) 0)
        (hc' : ContinuousWithinAt f' (Ici 0) 0)
        (hi : ∀ p, IntegrableOn (weightedPolynomialIntegrand f p) (Ioi 0))
        (hi' : ∀ p, IntegrableOn (weightedPolynomialIntegrand f' p) (Ioi 0))
        (hi'' : ∀ p, IntegrableOn (weightedPolynomialIntegrand f'' p) (Ioi 0)) :
        weightedPolynomialIntegral f'' (X * p) +
          weightedPolynomialIntegral f' ((1 - X) * p) =
          weightedPolynomialIntegral f (laguerreOperator p) := by
    …

    Mentions: OAI.DefocusingNLS.weightedPolynomialIntegrand, OAI.DefocusingNLS.weightedPolynomialIntegral, OAI.DefocusingNLS.laguerreOperator