Proposition 3(vii): TP2 and RR2 of the tent density #
The necessity arguments use positive-length intervals, so isolated values on strip boundaries cannot repair a failed minor inequality.
theorem
Papers.OrendayLaresRockel2026XiBeta.tentDensity_ae_tp2_iff
(b : ℝ)
(hb : b ∈ Set.Icc (-1) 1)
:
(Verification.HasAEOrderedMinors 1 fun (u v : ↑unitInterval) => tentDensity b hb ![u, v]) ↔ b = 0 ∨ b = 1
theorem
Papers.OrendayLaresRockel2026XiBeta.tentDensity_ae_rr2_iff
(b : ℝ)
(hb : b ∈ Set.Icc (-1) 1)
:
(Verification.HasAEOrderedMinors (-1) fun (u v : ↑unitInterval) => tentDensity b hb ![u, v]) ↔ b = 0 ∨ b = -1
theorem
Papers.OrendayLaresRockel2026XiBeta.leftBoundary_density_version_ae_minors_iff
(b : ℝ)
(hb : b ∈ Set.Icc (-1) 1)
{f : (Fin 2 → ↑unitInterval) → ℝ}
(hf : Measurable f)
(hn : ∀ (x : Fin 2 → ↑unitInterval), 0 ≤ f x)
(he :
(leftBoundary b hb).toMeasure = MeasureTheory.volume.withDensity fun (x : Fin 2 → ↑unitInterval) => ENNReal.ofReal (f x))
(s : ℝ)
:
(Verification.HasAEOrderedMinors s fun (u v : ↑unitInterval) => f ![u, v]) ↔ Verification.HasAEOrderedMinors s fun (u v : ↑unitInterval) => tentDensity b hb ![u, v]
The classification is unchanged for any measurable nonnegative density version.
theorem
Papers.OrendayLaresRockel2026XiBeta.leftBoundary_hasMTP2Density_iff
(b : ℝ)
(hb : b ∈ Set.Icc (-1) 1)
:
theorem
Papers.OrendayLaresRockel2026XiBeta.leftBoundary_hasRR2Density_iff
(b : ℝ)
(hb : b ∈ Set.Icc (-1) 1)
: