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math.CO2020
Quasi-ordinarization transform of a numerical semigroup
Maria Bras-Amorós, Hebert Pérez-Rosés, José Miguel Serradilla-Merinero
We introduce the quasi-ordinarization transform of a numerical semigroup. This transform will allow to organize all the semigroups of a given genus in a forest rooted at all quasi-…
math.CO2019
The right-generators descendant of a numerical semigroup
Maria Bras-Amorós, Julio Fernández-González
For a numerical semigroup, we encode the set of primitive elements that are larger than its Frobenius number and show how to produce in a fast way the corresponding sets for its ch…