NumericalSgps

A package for numerical semigroups

Version 1.2.1
Released 2019-08-22

This project is maintained by Manuel Delgado, Pedro A. Garcia-Sanchez

NumericalSgps

NumericalSgps is a GAP package for computing with Numerical Semigroups.

Introduction

The features of the package NumericalSgps include

• defining numerical semigroups;
• computing several properties of numerical semigroups, namely: multiplicity, Frobenius number, (minimal) system of generators, Apéry set, gaps, fundamental gaps, etc.;
• perform several operations on numerical semigroups and ideals, namely: intersection, quotient by an integer, decompose into irreducible semigroups, add a special gap, …; -computing and testing membership to relevant families of numerical semigroups.

There is a manual in the sub-directory doc written using the GAP package gapdoc which describes the available functions in detail. The pdf, html versions of the manual are also available there.

If you have used this package, please let us know by sending us an email. If you have found important features missing or if there is a bug, we would appreciate it very much if you send us an email.

The current maintainers of the package are: