2 papers
math.CO2024
Greedy Sets and Greedy Numerical Semigroups
Hebert Pérez-Rosés, José Miguel Serradilla-Merinero, Maria Bras-Amorós
Motivated by the change-making problem, we extend the notion of greediness to sets of positive integers not containing the element , and from there to numerical semigroups. We p…
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-…