[HTML][HTML] Numerical semigroups that can be expressed as an intersection of symmetric numerical semigroups Communicated by M.-F. Roy

JC Rosales, MB Branco - Journal of Pure and Applied Algebra, 2002 - Elsevier
Numerical semigroups that can be expressed as an intersection of symmetric numerical
semigroups Communicated by M.-F. Roy - ScienceDirect Skip to main contentSkip to article …

Symmetries on almost symmetric numerical semigroups

H Nari - Semigroup Forum, 2013 - Springer
The notion of an almost symmetric numerical semigroup was given by V. Barucci and R.
Fröberg in J. Algebra, 188, 418–442 (1997). We characterize almost symmetric numerical …

The oversemigroups of a numerical semigroup

JC Rosales, PA García-Sánchez, JI García-García… - Semigroup Forum, 2003 - Springer
We study the set of numerical semigroups containing a given numerical semigroup. As an
application we prove characterizations of irreducible numerical semigroups that unify some …

Numerical semigroups that differ from a symmetric numerical semigroup in one element

JC Rosales - Algebra Colloquium, 2008 - World Scientific
Numerical Semigroups that Differ from a Symmetric Numerical Semigroup in One Element Page
1 Algebra Colloquium c© 2008 AMSS CAS & SUZHOU UNIV Algebra Colloquium 15 : 1 (2008) …

The numerical duplication of a numerical semigroup

M D'Anna, F Strazzanti - Semigroup forum, 2013 - Springer
In this paper we present and study the numerical duplication of a numerical semigroup, a
construction that, starting with a numerical semigroup S and a semigroup ideal E⊆ S …

One half of a pseudo-symmetric numerical semigroup

JC Rosales - Bulletin of the London Mathematical Society, 2008 - academic.oup.com
One half of a pseudo-symmetric numerical semigroup Page 1 Bull. London Math. Soc. 40 (2008)
347–352 Cо2008 London Mathematical Society doi:10.1112/blms/bdn010 One half of a …

Every numerical semigroup is one half of infinitely many symmetric numerical semigroups

JC Rosales, PA García-Sánchez - Communications in Algebra, 2008 - Taylor & Francis
Full article: Every Numerical Semigroup is One Half of Infinitely Many Symmetric Numerical
Semigroups Skip to Main Content Taylor and Francis Online homepage Taylor and Francis …

Almost symmetric numerical semigroups

J Herzog, K Watanabe - Semigroup Forum, 2019 - Springer
We study almost symmetric numerical semigroups and semigroup rings. We describe a
characteristic property of the minimal free resolution of the semigroup ring of an almost …

Pseudo-symmetric numerical semigroups with three generators

JC Rosales, PA García-Sánchez - Journal of Algebra, 2005 - Elsevier
This paper gives a solution to the Diophantine Frobenius problem for pseudo-symmetric
numerical semigroups with embedding dimension three. We also describe a presentation for …

Numerical semigroups generated by intervals

PA García-Sánchez, JC Rosales - Pacific Journal of Mathematics, 1999 - msp.org
We study numerical semigroups generated by intervals and solve the following problems
related to such semigroups: the membership problem, give an explicit formula for the …