Packings

In this chapter, we define the concept of packing of sets in \(\mathbb {R}^n\) . Its relation to the concept of admissibility will be discussed. We define density of a discrete set and introduce the concepts of general packing density, and lattice packing density of a set in \(\mathbb {R}^n\) . We shall prove some results on packing of spheres and convex bodies and give some historical remarks on packings.