GAP Package groupoids

The groupoids package provides a collection of functions for computing with finite groupoids, graph of groups, and graphs of groupoids. These are based on the more basic structures of magmas with objects and their mappings. It provides functions for normal forms of elements in Free Products with Amalgamation and in HNN extensions. Up until April 2017 this package was named Gpd.

The current version of this package is version 1.76, released on 2024-09-23. For more information, please refer to the package manual. There is also a README file.

License: GPL-2.0-or-later

Dependencies

This package requires GAP version >=4.10.1

The following other GAP packages are needed:

fga >= 1.4.0
utils >= 0.76

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

semigroups >= 3.1.1

Authors

Emma J. Moore, Chris Wensley.

Citing

Please, cite this package as

[MW24] Moore, E. J. and Wensley, C., groupoids, Calculations with finite groupoids and their homomorphisms, Version 1.76 (2024)
(GAP package), https://gap-packages.github.io/groupoids/.

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

Feedback

For bug reports, feature requests and suggestions, please use the issue tracker.