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.
An Atlas of information (representations, presentations, standard generators, black box algorithms, maximal subgroups, conjugacy class representatives) about finite simple groups and related groups
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.
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.
M. Trodden. (1998)cite arxiv:hep-ph/9803479Comment: 113 pages, 10 figures, uses RevTeX. References added, several sections slightly expanded. To appear in Reviews of Modern Physics, October 1999.
M. Tegmark. (1997)cite arxiv:gr-qc/9702052Comment: Minor modifications to match published version. 5 pages. Color figures and related links at http://www.sns.ias.edu/~max/dimensions.html (faster from the US), from http://www.mpa-garching.mpg.de/~max/dimensions.html (faster from Europe) or from max@ias.edu.
M. Cheng, J. Duncan, and J. Harvey. (2012)cite arxiv:1204.2779Comment: 124 pages, 75 tables; updated references and minor editing in v.2; minor editing and two new theorems in v.3.
N. Amersi, O. Beckwith, S. Miller, R. Ronan, and J. Sondow. (2011)cite arxiv:1108.0475Comment: 13 pages, 2 tables, to appear in the CANT 2011 Conference Proceedings. This is version 2.0. Changes: fixed typos, added references to OEIS sequences, and cited Shevelev's preprint.