# HAPcryst

A HAP extension for crystallographic groups

Version 0.1.15
Released 2022-07-26

This project is maintained by Marc Roeder, The GAP Team

# GAP Package HAPcryst

This is an extension to the HAP package by Graham Ellis. It implements geometric methods for the calculation of resolutions of Bieberbach groups.

The current version of this package is version 0.1.15, released on 2022-07-26. For more information, please refer to the package manual. There is also a README file.

## Dependencies

This package requires GAP version >=4.9

The following other GAP packages are needed:

The following additional GAP packages are not required, but suggested:

## Citing

You can get more info by typing Cite("HAPcryst"); in the gap prompt.