@misc{10498/35378, year = {2024}, url = {http://hdl.handle.net/10498/35378}, abstract = {In this work, we will introduce the concept of ratio-covariety, as a family R of numerical semigroups that has a minimum, denoted by min(R), is closed under intersection, and if S ∈ R and S ̸= min(R), then S\{r(S)} ∈ R, where r(S) denotes the ratio of S. The notion of ratiocovariety will allow us to: (1) describe an algorithmic procedure to compute R; (2) prove the existence of the smallest element of R that contains a set of positive integers; and (3) talk about the smallest ratio-covariety that contains a finite set of numerical semigroups. In addition, in this paper we will apply the previous results to the study of the ratio-covariety R(F,m) = {S | S is a numerical semigroup with Frobenius number F and multiplicity m}.}, publisher = {MDPI}, keywords = {Numerical semigroup}, keywords = {ratio-covariety}, keywords = {Frobenius number}, keywords = {genus}, keywords = {ratio}, keywords = {algorithm}, title = {Ratio-Covarieties of Numerical Semigroups}, doi = {10.3390/ axioms13030193}, author = {Moreno Frías, María Ángeles and Rosales, José Carlos}, }