The completed resisting objective's gradient remains large outside the central region.
theorem
V7.Stage5AboveTwoLowerS5A2Envelope.lpNorm_supporting_vector_dual_norm_eq_one
{d : ℕ}
{p : ℝ}
(hp : 1 < p)
{y g : Point d}
(hy : y ≠ 0)
(hsupport : ∀ (z : Point d), lpNorm p y + O3.pairing g (z - y) ≤ lpNorm p z)
:
Every supporting vector of the nonzero ell_p norm has exact dual norm
one. The upper estimate uses the repository's kernel-closed norming vector.
theorem
V7.Stage5AboveTwoLowerS5A2Envelope.kernel_radial_barrier_of_unit_boundary
{p : ℝ}
{d : ℕ}
(kernel : SmoothingKernelData p d)
(hp : 1 ≤ p)
(hconv : O3.IsConvexObjective kernel.phi)
(hphi0 : kernel.phi 0 = 0)
(hboundary : ∀ (u : Point d), lpNorm p u = 1 → kernel.phi u > lpNorm p u)
(u : Point d)
:
Convexity and the frozen strict unit-sphere boundary condition propagate to the all-radii barrier required by compact-ball attainment.
theorem
V7.Stage5AboveTwoLowerS5A2Envelope.supporting_vector_eq_coordinate_gradient
{d : ℕ}
(f : Point d → ℝ)
(gradient : Point d → Point d)
(x g : Point d)
(hgradient : O3.IsCoordinateGradient f gradient)
(hsupport : ∀ (z : O3.Point d), f x + O3.pairing g (z - x) ≤ f z)
:
A global supporting vector of a genuinely differentiable value is its actual coordinate gradient. This is Fermat's theorem applied after removing the supporting affine functional.
theorem
V7.Stage5AboveTwoLowerS5A2Envelope.shiftedLpNorm_convex_oneLipschitz
{d : ℕ}
{p c : ℝ}
(hp : 1 ≤ p)
:
(O3.IsConvexObjective fun (x : Point d) => lpNorm p x - c) ∧ IsOneLipschitz p fun (x : Point d) => lpNorm p x - c
theorem
V7.Stage5AboveTwoLowerS5A2Envelope.partialH_eq_shiftedLpNorm_of_three_le
{p : ℝ}
{d T : ℕ}
(data : LowerCompletionData p d T)
{t : ℕ}
(hp : 1 ≤ p)
(hdelta : 0 ≤ data.delta)
(hxi : ∀ i ≤ t, data.xi i = 1 ∨ data.xi i = -1)
(hres : ResistingMaximumAt data t)
(hH : ∀ (x : Point d), data.partialH t x = max (data.partialG t x / 2) (lpNorm p x - 3 / 2))
{x : Point d}
(hx : 3 ≤ lpNorm p x)
:
theorem
V7.Stage5AboveTwoLowerS5A2Envelope.smooth_shiftedLpNorm_gradient_dual_norm_eq_one
{p : ℝ}
{d : ℕ}
(kernel : SmoothingKernelData p d)
(hp : 1 < p)
{chi : ℝ}
(hchi : 0 < chi)
(hkernel : SmoothingKernelAssumptions kernel)
{x : Point d}
(hx : chi < lpNorm p x)
:
Frozen S5-D outside-gradient and optimizer-interiority package.