Groupoids, group graphs, and groupoid graphs
built by guoguo
completed Thu, 29 Oct 2026 17:34:45 UTC
Description
The Groupoids package provides functions for computation with finite groupoids
and their morphisms.
The first part is concerned with the standard constructions for connected
groupoids, and for groupoids with more than one component. Groupoid morphisms
are also implemented, and recent work includes the implementation of
automorphisms of a finite, connected groupoid: by permutation of the objects;
by automorphism of the root group; and by choice of rays to each object. The
automorphism group of such a groupoid is also computed, together with an
isomorphism of a quotient of permutation groups.
The second part implements graphs of groups and graphs of groupoids. A graph
of groups is a directed graph with a group at each vertex and with
isomorphisms between subgroups on each arc. This construction enables normal
form computations for free products with amalgamation, and for HNN extensions,
when the vertex groups come with their own rewriting systems.
RPMs
No RPMs
Changelog
* Thu Sep 10 2026 Jerry James <loganjerry@gmail.com> - 1.84-1 - Version 1.84 * Wed Aug 19 2026 Jerry James <loganjerry@gmail.com> - 1.83-1 - Version 1.83 * Wed Jul 15 2026 Fedora Release Engineering <releng@fedoraproject.org> - 1.82-2 - Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild * Sat Jul 04 2026 Jerry James <loganjerry@gmail.com> - 1.82-1 - Version 1.82 * Thu Jun 11 2026 Jerry James <loganjerry@gmail.com> - 1.81-3 - Rebuild for gap 4.16.0 - Use gap(...) symbols in dependencies * Fri Jan 16 2026 Fedora Release Engineering <releng@fedoraproject.org> - 1.81-2 - Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild * Wed Nov 26 2025 Jerry James <loganjerry@gmail.com> - 1.81-1 - Version 1.81 * Fri Sep 26 2025 Jerry James <loganjerry@gmail.com> - 1.79-1 - Version 1.79 - Use the GAP declarative buildsystem * Wed Jul 23 2025 Fedora Release Engineering <releng@fedoraproject.org> - 1.78-2 - Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild * Sat Jul 19 2025 Jerry James <loganjerry@gmail.com> - 1.78-1 - Version 1.78 - Drop upstreamed test patch * Fri Jul 04 2025 Jerry James <loganjerry@gmail.com> - 1.77-1 - Version 1.77 - Add patch to fix a test typo * Thu Jan 16 2025 Fedora Release Engineering <releng@fedoraproject.org> - 1.76-2 - Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild * Tue Sep 24 2024 Jerry James <loganjerry@gmail.com> - 1.76-1 - Version 1.76 - Fix loading of the package for generating documentation - Setting LC_ALL is no longer required - Avoid %exclude