229 research outputs found
Constructing the set of complete intersection numerical semigroups with a given Frobenius number
Delorme suggested that the set of all complete intersection numerical
semigroups can be computed recursively. We have implemented this algorithm, and
particularized it to several subfamilies of this class of numerical semigroups:
free and telescopic numerical semigroups, and numerical semigroups associated
to an irreducible plane curve singularity. The recursive nature of this
procedure allows us to give bounds for the embedding dimension and for the
minimal generators of a semigroup in any of these families.Comment: 13 pages Results improved, References adde
Numerical semigroups problem list
We propose a list of open problems in numerical semigroups.Comment: To appear in the CIM Bulletin, number 33. (http://www.cim.pt/) 13
page
numericalsgps, a GAP package for numerical semigroups
The package numericalsgps performs computations with and for numerical and affine semigroups. This manuscript is a survey of what the package does, and at the same time intends to gather the trending topics on numerical semigroups
The second Feng-Rao number for codes coming from telescopic semigroups
In this manuscript we show that the second Feng-Rao number of any telescopic
numerical semigroup agrees with the multiplicity of the semigroup. To achieve
this result we first study the behavior of Ap\'ery sets under gluings of
numerical semigroups. These results provide a bound for the second Hamming
weight of one-point Algebraic Geometry codes, which improves upon other
estimates such as the Griesmer Order Bound
Generalized strongly increasing semigroups
In this work we present a new class of numerical semigroups called
GSI-semigroups. We see the relations between them and others families of
semigroups and we give explicitly their set of gaps. Moreover, an algorithm to
obtain all the GSI-semigroups up to a given Frobenius number is provided and
the realization of positive integers as Frobenius numbers of GSI-semigroups is
studied
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