摘要: A simple method for the construction of E8 root system with icosians is suggested. It confronted obtained by integral octonions. Embeddings maximal subgroups SU(5)*SU(5) and SU(3)*E6 in respective five-fold three-fold symmetries are discussed.
P. Goddard, W. Nahm, D. I. Olive, H. Ruegg, A. Schwimmer, Fermions and octonionsCommunications in Mathematical Physics. ,vol. 112, pp. 385- 408 ,(1987) , 10.1007/BF01218483