The all-face-dimensions conjecture for block-beta random polytopes

Let d=d1++dmd=d_1+\cdots+d_m, let \bbbeta\bbbeta be the block-parameter vector, and let Pd,d\bbbeta\mathcal{P}_{d,d}^{\bbbeta} be the associated block-beta random polytope. All-face-dimensions conjecture. For every j0,1,,d2j\in\\{0,1,\ldots,d-2\\},

Efj(Pd,d\bbbeta)Efd1(Pd,d\bbbeta).\mathbb{E}f_j(\mathcal{P}_{d,d}^{\bbbeta})\asymp\mathbb{E}f_{d-1}(\mathcal{P}_{d,d}^{\bbbeta}).

The paper proves this comparison only in the range jd/2j\geq\lfloor d/2\rfloor and conjectures that the restriction is unnecessary; the lower-dimensional face cases remain open.

Sources & referencesView supporting material

Primary source

Florian Besau, Anna Gusakova and Christoph Thäle, “Random polytopes in convex bodies: Bridging the gap between extremal containers”, arXiv:2411.19163 (2024).

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