Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-26T00:39:07.744Z Has data issue: false hasContentIssue false

On the Exponent of an Osculatory Packing

Published online by Cambridge University Press:  20 November 2018

David W. Boyd*
Affiliation:
California Institute of Technology, Pasadena, California
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Suppose that U is an open set in Euclidean N-space which has a finite volume |U|. A complete packing of U is a sequence of disjoint N-spheres C = {Sn} which are contained in U and whose total volume equals that of U. In an osculatory packing, the spheres are chosen recursively so that for all n larger than a certain value m, Sn has the largest radius of all spheres contained in U\(S1 ∪ … ∪ Sn-1) (S is the closure of S). An osculatory packing is simple if m = 1. If rn denotes the radius of Sn, the exponent of the packing is defined by:

This quantity is of considerable interest since it measures the effectiveness of the packing of U by C.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1971

References

1. Boyd, D. W., Osculatory packings by spheres, Can. Math. Bull. 13 (1970), 5964.Google Scholar
2. Boyd, D. W., Lower bounds for the disk packing constant, Math. Comp. (to appear).Google Scholar
3. Eggleston, H. G., Convexity, Cambridge Tracts in Mathematics and Mathematical Physics, No. 47 (Cambridge Univ. Press, New York, 1958).Google Scholar
4. Hardy, G. H., Littlewood, J. E., and Pölya, G., Inequalities (Cambridge, at the University Press, 1952).Google Scholar
5. Larman, D. G., On the exponent of convergence of a packing of spheres, Mathematika 13 (1966), 5759.Google Scholar
6. Larman, D. G., On packings of unequal spheres in Rn Can. J. Math. 20 (1968), 967969.Google Scholar
7. Melzak, Z. A., Infinite packings of disks, Can. J. Math. 18 (1966), 838852.Google Scholar