Beta polytopes and Poisson polyhedra: f-vectors and angles

Z Kabluchko, C Thäle, D Zaporozhets - Advances in Mathematics, 2020 - Elsevier
We study random polytopes of the form [X 1,…, X n] defined as convex hulls of independent
and identically distributed random points X 1,…, X n in R d with one of the following …

Beta-star polytopes and hyperbolic stochastic geometry

T Godland, Z Kabluchko, C Thäle - Advances in Mathematics, 2022 - Elsevier
Motivated by problems of hyperbolic stochastic geometry we introduce and study the class of
beta-star polytopes. A beta-star polytope is defined as the convex hull of an inhomogeneous …

Angles of random simplices and face numbers of random polytopes

Z Kabluchko - Advances in Mathematics, 2021 - Elsevier
Pick d+ 1 points uniformly at random on the unit sphere in R d. What is the expected value of
the angle sum of the simplex spanned by these points? Choose n points uniformly at …

Does a central limit theorem hold for the k-skeleton of Poisson hyperplanes in hyperbolic space?

F Herold, D Hug, C Thäle - Probability Theory and Related Fields, 2021 - Springer
Poisson processes in the space of (d-1)(d-1)-dimensional totally geodesic subspaces
(hyperplanes) in ad-dimensional hyperbolic space of constant curvature-1-1 are studied …

[图书][B] Convex Cones: Geometry and Probability

R Schneider - 2022 - books.google.com
This book provides the foundations for geometric applications of convex cones and presents
selected examples from a wide range of topics, including polytope theory, stochastic …

Grassmann angles and absorption probabilities of Gaussian convex hulls

F Götze, Z Kabluchko, D Zaporozhets - arXiv preprint arXiv:1911.04184, 2019 - arxiv.org
Let $ M $ be an arbitrary subset in $\mathbb R^ n $ with a conic (or positive) hull $ C $.
Consider its Gaussian image $ AM $, where $ A $ is a $ k\times n $-matrix whose entries are …

Optimal measures for multivariate geometric potentials

D Bilyk, D Ferizović, A Glazyrin, RW Matzke… - arXiv preprint arXiv …, 2023 - arxiv.org
We study measures and point configurations optimizing energies based on multivariate
potentials. The emphasis is put on potentials defined by geometric characteristics of sets of …

EXPECTED f‐VECTOR OF THE POISSON ZERO POLYTOPE AND RANDOM CONVEX HULLS IN THE HALF‐SPHERE

Z Kabluchko - Mathematika, 2020 - Wiley Online Library
We prove an explicit combinatorial formula for the expected number of faces of the zero
polytope of the homogeneous and isotropic Poisson hyperplane tessellation in R d. The …

Phase transition for the volume of high‐dimensional random polytopes

G Bonnet, Z Kabluchko, N Turchi - Random Structures & …, 2021 - Wiley Online Library
The beta polytope is the convex hull of n iid random points distributed in the unit ball of
according to a density proportional to if (in particular, corresponds to the uniform distribution …

Asymptotic normality for random polytopes in non-Euclidean geometries

F Besau, C Thäle - Transactions of the American Mathematical Society, 2020 - ams.org
Asymptotic normality for the natural volume measure of random polytopes generated by
random points distributed uniformly in a convex body in spherical or hyperbolic spaces is …