Coincidence Rotations of the Root Lattice <mml:math Altimg="si2.gif" Display="inline" Overflow="scroll" Xmlns:xocs=" Xmlns:xs=" Xmlns:xsi=" Xmlns=" Xmlns:ja=" Xmlns:mml=" Xmlns:tb=" Xmlns:sb=" Xmlns:ce=" Xmlns:xlink=" Xmlns:cals="

European Journal of Combinatorics - United States

doi 10.1016/j.ejc.2008.01.012