Extremal Lattices of Minimum 8 Related to the Mathieu Group M 22
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چکیده
In this paper, we construct three new extremal lattices of minimum 8; one is 3-modular and of dimension 40, the two others are unimodular of dimension 80. They are strongly connected to the 20-dimensional lattice with automorphism group isomorphic to 2:M 22 :2.
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تاریخ انتشار 1998