Publications [#236059] of Robert Calderbank

Journal articles or Book chapters PUBLISHED

1. Calderbank, AR; Sloane, NJA, Double Circulant Codes over ℤ4 and even Unimodular Lattices, Journal of Algebraic Combinatorics, vol. 6 no. 2 (January, 1997), pp. 119-131 [doi]
   (last updated on 2026/01/17)

   Abstract:
   With the help of some new results about weight enumerators of self-dual codes over ℤ4 we investigate a class of double circulant codes over ℤ4, one of which leads to an extremal even unimodular 40-dimensional lattice. It is conjectured that there should be "Nine more constructions of the Leech lattice".