Image:Neighborhood graph of Niemeier lattices.jpg

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Author User:r.e.b.. Public domain.

This is the Kneser neighborhood graph of the Niemeier lattices. Each point represents one of the 24 Niemeier lattices, and the lines joining them represent the 24 dimensional odd unimodular lattices with no norm 1 vectors. (Thick lines represent mulitple lines.) The number on the right is the Coxeter number of the Niemeier lattice.

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