[Bug 1233989] New: Review Request: gap-pkg-aclib - Almost Crystallographic groups library for GAP
by Red Hat Bugzilla
https://bugzilla.redhat.com/show_bug.cgi?id=1233989
Bug ID: 1233989
Summary: Review Request: gap-pkg-aclib - Almost
Crystallographic groups library for GAP
Product: Fedora
Version: rawhide
Component: Package Review
Severity: medium
Priority: medium
Assignee: nobody(a)fedoraproject.org
Reporter: loganjerry(a)gmail.com
QA Contact: extras-qa(a)fedoraproject.org
CC: package-review(a)lists.fedoraproject.org
Spec URL: https://jjames.fedorapeople.org/gap-pkg-aclib/gap-pkg-aclib.spec
SRPM URL:
https://jjames.fedorapeople.org/gap-pkg-aclib/gap-pkg-aclib-1.2-1.fc23.sr...
Fedora Account System Username: jjames
Description: The AClib package contains a library of almost crystallographic
groups and some algorithms to compute with these groups. A group is called
almost crystallographic if it is finitely generated nilpotent-by-finite and has
no nontrivial finite normal subgroups. Further, an almost crystallographic
group is called almost Bieberbach if it is torsion-free. The almost
crystallographic groups of Hirsch length 3 and a part of the almost
cyrstallographic groups of Hirsch length 4 have been classified by Dekimpe.
This classification includes all almost Bieberbach groups of Hirsch lengths 3
or 4. The AClib package gives access to this classification; that is, the
package contains this library of groups in a computationally useful form. The
groups in this library are available in two different representations. First,
each of the groups of Hirsch length 3 or 4 has a rational matrix representation
of dimension 4 or 5, respectively, and such representations are available in
this package. Secondly, all the groups in this libraray are (infinite)
polycyclic groups and the package also incorporates polycyclic presentations
for them. The polycyclic presentations can be used to compute with the given
groups using the methods of the Polycyclic package.
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