J. Morita et K. Sakamoto, Shell structure of dodecagonal quasicrystals associated with root system F-4 and cyclotomic field Q(zeta(12)), COMM ALGEB, 28(1), 2000, pp. 255-263
Using a Coxeter transformation of type F-4, Pie will construct quasicrystal
s of dimension 2 with twelvefold symmetry. Then, such quasicrystals will be
realized as subsets of a certain cyclotomic field. And we will study a typ
ical shell structure algebraically. In particular, we can give its mathemat
ical meaning in terms of elementary number theory.