The expected volume of a random polytope in a ball
For any convex body K in d‐dimensional Euclidean space Ed(d≥2) and for integers n and i, n ≥ d + 1,1 ≤ i ≤ n, let V(d) n‐ii(K) be the expected volume of the convex hull Hn‐i, i of n independent random points, of which n‐i are uniformly distributed in the interior, the other i on the boundary of K. W...
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1988
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222720_v151_n3_p277_Affentranger http://hdl.handle.net/20.500.12110/paper_00222720_v151_n3_p277_Affentranger |
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paper:paper_00222720_v151_n3_p277_Affentranger2025-07-30T17:30:46Z The expected volume of a random polytope in a ball Crofton's theorem on mean values expected volume of a random polytope geometric probabilities inscribed random polytopes integral geometry set of uniform random points stochastic geometry Sylvester's problem For any convex body K in d‐dimensional Euclidean space Ed(d≥2) and for integers n and i, n ≥ d + 1,1 ≤ i ≤ n, let V(d) n‐ii(K) be the expected volume of the convex hull Hn‐i, i of n independent random points, of which n‐i are uniformly distributed in the interior, the other i on the boundary of K. We develop an integral formula for V(d) n‐i, i(K) for the case that K is a d‐dimensional unit ball by considering an adequate decomposition of V(d) n‐i, i into d‐dimensional simplices. To solve the important case i = 0, that is the case in which all points are chosen at random from the interior of Bd, we require in addition Crofton's theorem on mean values. We illustrate the usefulness of our results by treating some special cases and by giving numerical values for the planar and the three‐dimensional cases. 1988 Blackwell Science Ltd 1988 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222720_v151_n3_p277_Affentranger http://hdl.handle.net/20.500.12110/paper_00222720_v151_n3_p277_Affentranger |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Crofton's theorem on mean values expected volume of a random polytope geometric probabilities inscribed random polytopes integral geometry set of uniform random points stochastic geometry Sylvester's problem |
| spellingShingle |
Crofton's theorem on mean values expected volume of a random polytope geometric probabilities inscribed random polytopes integral geometry set of uniform random points stochastic geometry Sylvester's problem The expected volume of a random polytope in a ball |
| topic_facet |
Crofton's theorem on mean values expected volume of a random polytope geometric probabilities inscribed random polytopes integral geometry set of uniform random points stochastic geometry Sylvester's problem |
| description |
For any convex body K in d‐dimensional Euclidean space Ed(d≥2) and for integers n and i, n ≥ d + 1,1 ≤ i ≤ n, let V(d) n‐ii(K) be the expected volume of the convex hull Hn‐i, i of n independent random points, of which n‐i are uniformly distributed in the interior, the other i on the boundary of K. We develop an integral formula for V(d) n‐i, i(K) for the case that K is a d‐dimensional unit ball by considering an adequate decomposition of V(d) n‐i, i into d‐dimensional simplices. To solve the important case i = 0, that is the case in which all points are chosen at random from the interior of Bd, we require in addition Crofton's theorem on mean values. We illustrate the usefulness of our results by treating some special cases and by giving numerical values for the planar and the three‐dimensional cases. 1988 Blackwell Science Ltd |
| title |
The expected volume of a random polytope in a ball |
| title_short |
The expected volume of a random polytope in a ball |
| title_full |
The expected volume of a random polytope in a ball |
| title_fullStr |
The expected volume of a random polytope in a ball |
| title_full_unstemmed |
The expected volume of a random polytope in a ball |
| title_sort |
expected volume of a random polytope in a ball |
| publishDate |
1988 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222720_v151_n3_p277_Affentranger http://hdl.handle.net/20.500.12110/paper_00222720_v151_n3_p277_Affentranger |
| _version_ |
1840328025957203968 |