The genus of a quotient of several types of numerical semigroups

IF 0.5 3区数学 Q3 MATHEMATICS

International Journal of Number Theory Pub Date : 2024-04-05 DOI:10.1142/s1793042124500891

Kyeongjun Lee, Hayan Nam

引用次数: 0

Abstract

Finding the Frobenius number and the genus of any numerical semigroup $S$ is a well-known open problem. Similarly, it has been studied how to express the Frobenius number and the genus of a quotient of a numerical semigroup. In this paper, by enumerating the Hilbert series of each type of numerical semigroup, we show an expression for the genus of a quotient of numerical semigroups generated by one of the following series: arithmetic progression, geometric series, and Pythagorean triple.

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几类数字半群商数的属数

求任何数值半群 S 的弗罗贝尼斯数和属是一个众所周知的公开问题。同样，如何表达数值半群的商的弗罗贝尼斯数和属也是一个研究课题。本文通过枚举各类数字半群的希尔伯特数列，展示了由以下数列之一生成的数字半群商的属数表达式：算术级数、几何级数和毕达哥拉斯三重数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Number Theory 数学-数学

CiteScore

1.10

自引率

14.30%

发文量

审稿时长

4-8 weeks

期刊介绍： This journal publishes original research papers and review articles on all areas of Number Theory, including elementary number theory, analytic number theory, algebraic number theory, arithmetic algebraic geometry, geometry of numbers, diophantine equations, diophantine approximation, transcendental number theory, probabilistic number theory, modular forms, multiplicative number theory, additive number theory, partitions, and computational number theory.