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Group-Subgroup Lattice and Chains of Maximal Subgroups

Lattice and chains ...
For a given group and supergroup the program SUBGROUPGRAPH will give the lattice of maximal subgroups that relates these two groups and, in the case that the index is specified, all of the possible chains of maximal subgroups that relate the two groups will be shown. Also, when the index is specified there is a possibility to obtain all of the different subgroups of the same type.

As an input data you should give (or select) the numbers of the group and the subgroup, and the index.

How to obtain a valid index ?


More about the program.

Please, enter the sequential numbers of the group and the subgroup as given in the International Tables for Crystallography, Vol. A:
Enter the supergroup number (G) or choose it:
Enter the subgroup number (H) or choose it:
Enter the index [G:H]



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