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including double coset rewriting systems


23 January 2024

Anne Heyworth

Chris Wensley


Kan is a GAP package originally implemented in 1996 using the GAP 3 language, to compute induced actions of categories, when the first author was studying for a Ph.D. in Bangor.

This reduced version only provides functions for the computation of normal forms of representatives of double cosets of finitely presented groups.

Kan became an accepted GAP package in May 2015.

Bug reports, suggestions and comments are, of course, welcome. Please contact the last author at or submit an issue at the GitHub repository


© 1996-2024 Anne Heyworth and Chris Wensley

The Kan package is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.


This documentation was prepared using the GAPDoc [LN17] and AutoDoc [GH17] packages.

The procedure used to produce new releases uses the package GitHubPagesForGAP [Hor17] and the package ReleaseTools.


1 Introduction
2 Double Coset Rewriting Systems
3 Development History

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