Function representatives in Riesz pressure duality #
The measurable representative of the pressure satisfies the same pairing as
its canonical space-time L^r class.
theorem
CKN.Leray.rieszPressureSpaceTime_duality
(r : ℝ)
(hr : 1 < r)
(q : ℝ)
(hq : 1 < q)
(hHolder : r.HolderConjugate q)
(F : Fin 3 → Fin 3 → Foundation.Parabolic.Vec3 × ℝ → ℝ)
(hF : ∀ (i j : Fin 3), MeasureTheory.MemLp (F i j) (ENNReal.ofReal r) MeasureTheory.volume)
(g : Foundation.Parabolic.Vec3 × ℝ → ℝ)
(hg : MeasureTheory.MemLp g (ENNReal.ofReal q) MeasureTheory.volume)
:
∫ (z : Foundation.Parabolic.Vec3 × ℝ), rieszPressureSpaceTime r hr F hF z * g z = ∑ i : Fin 3,
∑ j : Fin 3,
∫ (z : Foundation.Parabolic.Vec3 × ℝ), F i j z * ↑↑((rieszPressureSpaceTimeComponent q hq j i) (MeasureTheory.MemLp.toLp g hg)) z
The measurable space-time pressure representative satisfies the full
duality formula, used by lem:riesz-duality.