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In mathematics, II25,1 is the even 26-dimensional Lorentzian unimodular lattice. It has several unusual properties, arising from Conway's discovery that it has a norm zero Weyl vector. In particular it is closely related to the Leech lattice, and has the Conway group Co1 at the top of its automorphism group.
K. Milton, E. Abalo, P. Parashar, N. Pourtolami, I. Brevik, and S. Ellingsen. (2012)cite arxiv:1202.6415Comment: 24 pages, 14 figures, contribution to the special issue of J. Phys. A honoring Stuart Dowker. This revision corrects typos and adds additional references and discussion.
J. Shapiro. (2007)cite arxiv:0711.3448Comment: Invited Contribution to "The Birth of String Theory" Commemorative Volume. 12 pages, 2 figures. Minor content revision.
P. Frampton. (2006)cite arxiv:astro-ph/0612243Comment: 7 pages latex. Talk presented at Workshop on Origin of Mass and Strong Coupling Gauge Theories. Nagoya, Japan. 21-24 November,2006.
J. Valle. (2006)cite arxiv:hep-ph/0608101Comment: Review based on lectures at the Corfu Summer Institute on Elementary Particle Physics in September 2005. To be published in the Proceedings.
S. Parameswaran, R. Roy, and S. Sondhi. (2013)cite arxiv:1302.6606Comment: 30 pages, 4 figures; review submitted to topical issue of Comptes Rendus Physique devoted to topological insulators and Dirac matter. Pre-publication version; comments are invited.