THE CRYSTALLOGRAPHIC GROUPS OF 4 − SYMMETRY WITH THE GENERATING GROUPS OF CATEGORY G320

Alexandru LUNGU, Marina ROŞCA Universitatea de Stat din Moldova

Аннотация

In this paper are drawn and described possible groups for all types of 4 − symmetry groups who as generating crystallographic groups of categories G20 and G320 . Keywords: generalized symmetries, groups, right quasi-homomorphism.