Limit theorems for generalized convex hulls

Authors

DOI:

https://doi.org/10.17721/1812-5409.2025/2.9

Keywords:

generalized convexity, Poisson hyperplane tesselation, zero cell, curvature measure

Abstract

The (K, H)-hull of a set A ⊆ Rd is a generalization of the standard closed convex hull of A which can be defined as the intersection of all images that contain A of a closed convex subset K ⊂ Rd under the action of a subset H of the group of invertible affine transformations of Rd. We demonstrate that the scaled normalization of the (K, H)-hull of a random sample, distributed according to a probability measure µ on K with a power-like behavior near the boundary ∂K of K, converges in distribution to a random closed set which can be viewed as the zero cell of a certain Poisson hyperplane tessellation with explicit intensity measure.

Pages of the article in the issue: 73 - 81

Language of the article: English

References

Fodor, F. (2020). Random ball-polytopes in smooth convex bodies. https://arxiv.org/abs/1906.11480

Fodor, F., Kevei, P., & Vígh, V. (2014). On random disc polygons in smooth convex discs. Advances in Applied Probability, 46(4), 899–918. https://doi.org/10.1239/aap/1418396236

Fodor, F., Papvári, D. I., & Vígh, V. (2020). On random approximations by generalized disc-polygons. Mathematika, 66(2), 498–513. https://doi.org/10.1112/mtk.12027

Hug, D., Last, G., & Weil, W. (2004). A local steiner-type formula for general closed sets and applications. Mathematische Zeitschrift, 246, 237–272. https://doi.org/10.1007/s00209-003-0597-9

Kabluchko, Z., Marynych, A., & Molchanov, I. (2025). Generalised convexity with respect to families of affine maps. Israel Journal of Mathematics, 266, 131–175. https://doi.org/10.1007/s11856-025-2751-0

Kiderlen, M., & Rataj, J. (2006). On infinitesimal increase of volumes of morphological transforms. Mathematika, 53(1), 103–127. https://doi.org/10.1112/S002557930000005X

Marynych, A., & Molchanov, I. (2022). Facial structure of strongly convex sets generated by random samples. Advances in Mathematics, 395, 108086. https://doi.org/10.1016/j.aim.2021.108086

Molchanov, I. (2005). Theory of random sets. Springer London. https://doi.org/10.1007/1-84628-150-4

Schneider, R. (2013). Convex bodies: The brunn-minkowski theory (2nd ed.). Cambridge University Press. https://doi.org/10.1017/CBO9781139003858

Visona, T. (2024). Intersections of randomly translated sets. Journal Of Theoretical Probability, 38, 3. https://doi.org/10.1007/s10959-024-01371-z

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Published

2025-12-23

Issue

Section

Algebra, Geometry and Probability Theory

How to Cite

Sadok, M. (2025). Limit theorems for generalized convex hulls. Bulletin of Taras Shevchenko National University of Kyiv. Physics and Mathematics, 81(2), 73-81. https://doi.org/10.17721/1812-5409.2025/2.9