Ordered Sobolev energy time chain #
Differentiable L² trajectories for the finitely many ordered
derivatives produce the exact time derivative of the H^m energy.
theorem
ESS.lps_ordered_energy_time_chain
(m : ℕ)
(u q : CKN.Foundation.Parabolic.ParabolicPoint → CKN.Foundation.Parabolic.Vec3)
(t : ℝ)
(hu :
∀ (s : ℝ) (i : Fin 3) (α : List (Fin 3)),
MeasureTheory.MemLp (CKN.wordDeriv α fun (x : CKN.Foundation.Parabolic.Vec3) => u (x, s) i) 2 MeasureTheory.volume)
(hq :
∀ (i : Fin 3) (α : List (Fin 3)),
MeasureTheory.MemLp (CKN.wordDeriv α fun (x : CKN.Foundation.Parabolic.Vec3) => q (x, t) i) 2 MeasureTheory.volume)
(hcurve :
∀ (i : Fin 3),
∀ α ∈ CKN.sobolevWords m,
HasDerivAt
(fun (s : ℝ) =>
MeasureTheory.MemLp.toLp (CKN.wordDeriv α fun (x : CKN.Foundation.Parabolic.Vec3) => u (x, s) i) ⋯)
(MeasureTheory.MemLp.toLp (CKN.wordDeriv α fun (x : CKN.Foundation.Parabolic.Vec3) => q (x, t) i) ⋯) t)
:
HasDerivAt
(fun (s : ℝ) =>
∑ i : Fin 3,
∑ α ∈ CKN.sobolevWords m,
∫ (x : CKN.Foundation.Parabolic.Vec3), CKN.wordDeriv α (fun (y : CKN.Foundation.Parabolic.Vec3) => u (y, s) i) x ^ 2)
(2 * ∑ i : Fin 3,
∑ α ∈ CKN.sobolevWords m,
∫ (x : CKN.Foundation.Parabolic.Vec3), CKN.wordDeriv α (fun (y : CKN.Foundation.Parabolic.Vec3) => u (y, t) i) x * CKN.wordDeriv α (fun (y : CKN.Foundation.Parabolic.Vec3) => q (y, t) i) x)
t
Differentiable L² curves of every ordered derivative imply the
time-chain identity in eq:lps-regularized-Hm-identity.