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GAP package Cryst

Computing with crystallographic groups

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 Carat.

Version

Current version number 4.1.12   (Released 10/10/2013)

Status

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

Dependencies

GAP version: >=4.5
Needed other packages: polycyclic(>=2.9),
Suggested other packages: CrystCat(>=1.1.4), Carat(>=2.1.1), XGAP(>=4.22),

Online documentation

Cryst: [ HTML] version   [ PDF] version  

Download

[README]    cryst-4.1.12[.tar.gz  (172K)]   [.tar.bz2  (160K)]   [-win.zip  (188K)]   [.zip  (188K)]  

Contact

Bettina Eick
WWW: http://www.icm.tu-bs.de/~beick/
E-mail: beick@tu-bs.de

Franz Gähler
WWW: http://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