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Papers.OrendayLaresRockel2026XiBeta.TentTotalPositivity

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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.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) :

The classification is unchanged for any measurable nonnegative density version.