Images of physically irreducible representations of the 230 space groups
Harold T. Stokes, D. M. Hatch, J. S. Kim · Acta Crystallographica Section A Foundations of Crystallography · 1987
Among the 230 crystallographic space groups, we find there are more than 4000 physically irreducible representations (irreps) that arise from k points of symmetry. These irreps map the space-group elements onto only 132 different images. These images are listed, and their group-subgroup relations are given. Images which are active in the Landau theory of continuous phase transitions are also indicated.