Revisiting the hexagonal lattice: on optimal lattice circle packing
Revisiting the hexagonal lattice: on optimal lattice circle packing
In this note we give a simple proof of the classical fact that the hexagonal lattice gives the highest density circle packing among all lattices in R 2 . With the benet of hindsight, we show that the problem can be restricted to the important class of well-rounded lattices, on …