組合せ論セミナー

第83回 2017年12月22日 14:00〜15:30

島田 伊知朗(広島大学)「An even extremal lattice of rank 64」

We construct an even unimodular lattice of rank 64 with minimal norm 6 by means of a generalized quadratic residue code. The calculation of the minimal norm is carried out by a brute-force method.