Abstract:
We generalize the quasicrystallographic groups in the sense of Novikov and Veselov from Euclidean spaces to pseudo-Euclidean and affine spaces. We prove that the quasicrystallographic groups on Minkowski spaces whose rotation groups satisfy an additional assumption are projections of crystallographic groups on pseudo-Euclidean spaces. An example shows that the assumption cannot be dropped. We prove that each quasicrystallographic group is a projection of a crystallographic group on an affine space.
Citation:
R. M. Garipov, V. A. Churkin, “Quasicrystallographic groups on Minkowski spaces”, Sibirsk. Mat. Zh., 50:4 (2009), 780–799; Siberian Math. J., 50:4 (2009), 616–631