Dear GAP Forum, It is a pleasure to announce the official acceptance of the GAP package lpres developed by René Hartung and maintained by Laurent Bartholdi.
The lpres package defines new GAP objects to work with L-presented groups, namely groups given by a finite generating set and a possibly-infinite set of relations given as iterates of finitely many seed relations by a finite set of endomorphisms. The package implements nilpotent quotient, Todd-Coxeter and Reidemeister-Schreier algorithms for L-presented groups. The lpres package has been already redistributed with GAP since its version 0.4.1 included in GAP 4.8.7 distribution (March 2017). The version that has been accepted is lpres 1.0.0, included in GAP 4.10.0 distribution (November 2018). The lpres package is the successor of the GAP package NQL by René Hartung that has been accepted and redistributed with GAP 4.4 and has been withdrawn since GAP 4.5. We are grateful to René Hartung and Laurent Bartholdi for these contributions, and very pleased to see that the revised functionality from the NQL package is now available again to the users of the latest GAP release. For further information about the package, see its website at https://gap-packages.github.io/lpres/. The source code is hosted on GitHub at https://github.com/gap-packages/lpres. For suggestions, feature requests and bug reports, please use the issue tracker at https://github.com/gap-packages/lpres/issues. Best regards Alexander _______________________________________________ Forum mailing list Forum@gap-system.org https://mail.gap-system.org/mailman/listinfo/forum
