Distributions of points in d dimensions and large k-point simplices

  • Authors:
  • Hanno Lefmann

  • Affiliations:
  • Fakultät für Informatik, TU Chemnitz, Chemnitz, Germany

  • Venue:
  • COCOON'05 Proceedings of the 11th annual international conference on Computing and Combinatorics
  • Year:
  • 2005

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Abstract

We consider a variant of Heilbronn’s triangle problem by asking for fixed dimension d ≥ 2 and for fixed integers k ≥ 3 with k ≤ d+1 for a distribution of n points in the d-dimensional unit-cube [0,1]d such that the minimum volume of a k-point simplex among these n points is as large as possible. Denoting by Δk,d(n) the supremum of the minimum volume of a k-point simplex among n points over all distributions of n points in [0,1]d we will show that ck . (log n)1/( d−−k+2)/n(k−−1)/(d−−k+2) ≤ Δk,d(n) ≤ ck′/n(k−−1)/d for 3 ≤ k ≤ d +1, and moreover Δk,d(n) ≤ ck′′/n(k−−1)/d+(k−−2)/(2d(d−−1)) for k ≥ 4 even, and constants ck, ck′, ck′′ 0.