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.