CARAT Introduction / Programs / Presentaion

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## Program Presentation

### Usage

    Presentation 'file' [-D]

file: bravais_TYP containing a finite matrix group G.

### Description

Calculates a presentation of the finite group G.

### Options

    -D  : meant for debugging. Do not use.

### Remarks

See also for Is_finite.

### Examples

1. Do given matrices generate a space group? If so, find its name and normal representation.
2. Find all Z-classes, affine classes and torsion free space groups in a given Q-class.

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