| 释义 |
Leech, n.5 Math.|liːtʃ|
[The name of John Leech (1926–92), British mathematician, who described the concept in Canad. Jrnl. Math. (1967) XIX. 251.]
Leech lattice, a set of points in 24-dimensional Euclidean space regularly arranged such that each point has exactly 196,560 nearest neighbours.
1968J. H. Conway in Proc. Nat. Acad. Sci. LXI. 398 The Leech lattice λ is the union of the sets [C, m] over all C {elem} C and all integers m. 1974Nature 8 Feb. (Advt. facing p. 402), In the final chapter Steiner systems and sphere packing problems are related via the famous Leech lattice. 1982D. Gorenstein Finite Simple Groups ii. 120 Conway constructed his three simple groups from the automorphism group of the remarkable 24-dimensional Leech lattice. 1986Nature 20 Feb. 621/3 The Leech lattice (an economical way to pack spheres in 24-dimensional space). |