Sphere packings revisited

  • Authors:
  • Károly Bezdek

  • Affiliations:
  • Department of Mathematics and Statistics, University of Calgary, Calgary, AB, Canada

  • Venue:
  • European Journal of Combinatorics
  • Year:
  • 2006

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Abstract

In this paper we survey most of the recent and often surprising results on packings of congruent spheres in d-dimensional spaces of constant curvature. The topics discussed are as follows: - Hadwiger numbers of convex bodies and kissing numbers of spheres; - touching numbers of convex bodies; - Newton numbers of convex bodies; - one-sided Hadwiger and kissing numbers; - contact graphs of finite packings and the combinatorial Kepler problem; - isoperimetric problems for Voronoi cells, the strong dodecahedral conjecture and the truncated octahedral conjecture; - the strong Kepler conjecture; - bounds on the density of sphere packings in higher dimensions; - solidity and uniform stability. Each topic is discussed in details along with some of the "most wanted" research problems.