## Program Standard_affine_form

### Usage

Standard_affine_form 'file1' 'file2' [-t]

file1: bravais_TYP containing a space group G.

file2: matrix_TYP contatining a presentation of the point group of G.
### Description

Transforms the space group with generators in file1 into standard
form, ie. the translation lattice is transformed to Z^{n}.
In case the translation subgroup has dimension smaller than n, i.
e. the group is not an n-dimensional space group, the program
will indicate an error, gives the rank, and exit.
### Options

-t : The transforming matrix will be given as well.

### Remarks

This program is a synonym for Extract -t.
See also for Extensions and Vector_systems.
### Examples

- Do given matrices generate a space group? If so, find
its name and normal representation.