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Lattices in the sense of discrete subgroups of Euclidean spaces, as used in number theory, discrete geometry, Lie groups, etc. (Not to be confused with lattice theory or lattices as used in physics! For lattices (ordered sets), use the tag: [lattice-theory])
10
votes
Why do bees create hexagonal cells ? (Mathematical reasons)
Here is a paragraph of THE LIFE OF THE BEE (1901) By Maurice Maeterlinck:
"There are only," says Dr. Reid, "three possible figures of the cells which can make them all equal and similar, without any …