Program Graph
Usage
Graph 'file1' ['file2'] -[options]
file1: bravais_TYP with REDUCED pointgroup G with CORRECT order
file2: matrix_TYP with presentation for G
Description
Calculates the "graph of inclusions" for a
geometric class given by G.
For further information on the output see
example 13.
Options
-i : Print the Z-classes to 'file1.i' and the affine classes
to 'file1.i.j',
-f : Calculates the formspace even if it is given.
CAUTION:
If you give the formspace and the normalizers,
they have to be correct. Then G->gen and G->normal
have to generate the normalizer of G.
-l : If the order of a cohomology group is >= 2097152,
you have to use this option; the program needs more
time with this option.
-d : only for debugging
Remarks
See also for Extensions/Vector_systems,
K_Subgroups,
K_Supergroups,
Order, Presentation, QtoZ.
Examples
- Calculate the "graph of inclusions"
for a given geometric class.