GAP package numericalsgps

Authors: Manuel Delgado, Pedro A. Garcia-Sanchez and Jose Morais.
Current version: 0.96 (released 2008-11-18)

The aim of this package is to make available a computational tool to deal with numerical semigroups.

The features of this package include:
- defining numerical semigroups;
- computing several properties of numerical semigroups, namely: multiplicity, Frobenius number, (minimal) system of generators, Apery set, gaps, fundamental gaps, etc.;
- perform several operations on numerical semigroups, namely: intersection, quotient by an integer, decompose into irreducible semigroups, add a special gap;