Numerical semigroup tree: type-representation

Fuente: arXiv
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Main Authors: Chappelon, Jonathan, Alfonsín, Jorge L. Ramírez, Stamate, Dumitru I.
Format: Preprint
Published: 2025
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_version_ 1866915634219057152
author Chappelon, Jonathan
Alfonsín, Jorge L. Ramírez
Stamate, Dumitru I.
author_facet Chappelon, Jonathan
Alfonsín, Jorge L. Ramírez
Stamate, Dumitru I.
contents In this paper, we introduce a new depicting of the so-called numerical semigroup tree $\mathcal T$. By exploring computationally this improved picture, relying on the type notion of a semigroup, we found that the number of semigroups of genus $g$ and type $t$ is constante when $t$ is close to $g$ while $g$ grows. We also study the unimodality of various sequences as well as the behavior of the leaves in $\mathcal T$. We put forward several conjectures that are supported by various computational experiments.
format Preprint
id arxiv_https___arxiv_org_abs_2507_15006
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Numerical semigroup tree: type-representation
Chappelon, Jonathan
Alfonsín, Jorge L. Ramírez
Stamate, Dumitru I.
Commutative Algebra
05A15, 11D07, 05E40,
In this paper, we introduce a new depicting of the so-called numerical semigroup tree $\mathcal T$. By exploring computationally this improved picture, relying on the type notion of a semigroup, we found that the number of semigroups of genus $g$ and type $t$ is constante when $t$ is close to $g$ while $g$ grows. We also study the unimodality of various sequences as well as the behavior of the leaves in $\mathcal T$. We put forward several conjectures that are supported by various computational experiments.
title Numerical semigroup tree: type-representation
topic Commutative Algebra
05A15, 11D07, 05E40,
url https://arxiv.org/abs/2507.15006