CARAT Introduction / Programs / QtoZ

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## Program QtoZ

### Usage

    QtoZ 'file' [-D] [-a] [-f] [-q]

file1: bravais_TYP.

### Description

Splits the Q-class of the group in 'file' into Z-classes and gives a representative for each Z-class.

### Options

    -a    : Only calculates representatives of the homogeneously
            decomposable Z-classes and basis transformations
            to the remaining Z-classes (as centerings).
            This option is faster.
    -D    : (For debugging:) Output is  split into  different
            files 'file'.1, 'file'.2, ... matching the
            representative groups.
    -f    : recalculate the formspace even if it is given.
    -q    : quiet mode.

### Remarks

WARNING: This program might be very time consuming, especially if the group has many Z-classes.

See also for Is_finite and Order.

### Examples

1. How do the Z-classes in the Q-class of a given group distribute into their Bravais flocks?
2. Find all Z-classes, affine classes and torsion free space groups in a given Q-class.

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