Ideal Class Monoid of a Numerical Semigroup

In this repository we present the tools needed to develop the examples in the papers

• L. Casabella, M. D’Anna, P. A. García-Sánchez, Apéry sets and the ideal class monoid of a numerical semigroup, Mediterr. J. Math. 21:7 (2024); arxiv.org/2302.09647
• P. A. García-Sánchez, The isomorphism problem for ideal class monoids of numerical semigroups (to appear in Semigroup Forum), arXiv:2311.15265.

The notebook ideal-class-monoid contains the necessary code (written using the GAP package numericalsgps), together with some examples extracted from the first paper. The notebook isomorphism-ideal-class-monoid contains examples for the second manuscript.