Rig is a GAP package for computations related to racks, quandles, Nichols algebras.

Features

Racks and quandles

• groups associated to finite racks and quandles
• complete list of non-isomorphic indecomposable quandles of order < 36
• rack and quandle homology
• Nelson's polynomials invariants

Nichols algebras

• derivations
• dimensions and relations for gbnp package

Authors

• L. Vendramin
• M. Graña (retired)

Contributions

You are welcome to contribute with code, patches, ideas, testing, wiki, comments, documentation. Click here to see the list of contributors.

Usage

Follow this link if you don't know how to install the package.

To load the package:

gap> LoadPackage("rig");

If you want to see some examples follow this link.

Download

Latest stable version here, version 0.8.3.

Links

• GAP - Groups, Algorithms, Programming - a System for Computational Discrete Algebra
• GBNP, GAP Package for Gröbner Bases for Non-commutative Polynomials
• Sage: Open Source Mathematics Software