Emergent Mind
Some Extremal Self-Dual Codes and Unimodular Lattices in Dimension 40
(1111.2637)
Published Nov 11, 2011
in
math.CO
,
cs.IT
,
math.IT
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and
math.NT
Abstract
In this paper, binary extremal singly even self-dual codes of length 40 and extremal odd unimodular lattices in dimension 40 are studied. We give a classification of extremal singly even self-dual codes of length 40. We also give a classification of extremal odd unimodular lattices in dimension 40 with shadows having 80 vectors of norm 2 through their relationships with extremal doubly even self-dual codes of length 40.
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