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arXiv · 0910.2055

Rank 72 high minimum norm lattices

Robert L. Griess Jr
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Abstract

Given a polarization of an even unimodular lattice and integer $k\ge 1$, we define a family of unimodular lattices $L(M,N,k)$. Of special interest are certain $L(M,N,3)$ of rank 72. Their minimum norms lie in $\{4, 6, 8\}$. Norms 4 and 6 do occur. Consequently, 6 becomes the highest known minimum norm for rank 72 even unimodular lattices. We discuss how norm 8 might occur for such a $L(M,N,3)$. We note a few $L(M,N,k)$ in dimensions 96, 120 and 128 with moderately high minimum norms.

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Robert L. Griess Jr. 2009-10-11. Rank 72 high minimum norm lattices. https://arxiv.org/abs/0910.2055

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