GAP package Cryst

Computing with crystallographic groups

[WWW homepage]

Authors

Bettina Eick, Franz Gähler, Werner Nickel

Short Description

This package, previously known as CrystGAP, provides a rich set of methods for the computation with affine crystallographic groups, in particular space groups. Affine crystallographic groups are fully supported both in representations acting from the right or from the left, the latter one being preferred by crystallographers. Functions to determine representatives of all space group types of a given dimension are also provided. Where necessary, Cryst can also make use of functionality provided by the package CaratInterface.

Version

Current version shipped with GAP: 4.1.23   (Released 10/12/2019)

License

GPL-2.0-or-later

Status

accepted    (communicated by Herbert Pahlings (Aachen), accepted 02/2000)

Dependencies

GAP version: >=4.9
Needed other packages: polycyclic(>=2.9),
Suggested other packages: CrystCat(>=1.1.4), CaratInterface(>=2.3.1), XGAP(>=4.22),

Online documentation

Cryst: [ HTML] version   [ PDF] version  

Download

[README]    cryst-4.1.23[.tar.gz  (196K)]   [.tar.bz2  (184K)]   [-win.zip  (216K)]   [.zip  (212K)]  

Source code repository

git : https://github.com/gap-packages/cryst

Issue tracker

https://github.com/gap-packages/cryst/issues

Support email address

gaehler@math.uni-bielefeld.de

Contact

Bettina Eick
Address:
Institut Analysis und Algebra
TU Braunschweig
Universitätsplatz 2
D-38106 Braunschweig
Germany
WWW: http://www.iaa.tu-bs.de/beick
E-mail: beick@tu-bs.de

Franz Gähler
WWW: https://www.math.uni-bielefeld.de/~gaehler/
E-mail: gaehler@math.uni-bielefeld.de

Werner Nickel
WWW: http://www.mathematik.tu-darmstadt.de/~nickel/
E-mail: nickel@mathematik.tu-darmstadt.de