SUBGROUPGRAPH: a computer program for analysis of groupsubgroup relations between space groups

The main aim of SUBGROUPGRAPH is a detailed study of a group-subgroup relation between two space groups, G > H, including the construction of chains of maximal subgroups for G > H for a specified/non-specified index i = |G:H| (the so-called G-H graph), the determination of the number of the different Hk < G, Hk (approximately equal to)H, and their distribution into classes of conjugate subgroups relative to G, etc.