Congruence testing for odd subgroups of the modular group

Q1 Mathematics

Lms Journal of Computation and Mathematics Pub Date : 2013-07-02 DOI:10.1112/S1461157013000338

Thomas Hamilton, David Loeffler

引用次数: 1

Abstract

We give a computationally effective criterion for determining whether a finite-index subgroup of SL2(Z) is a congruence subgroup, extending earlier work of Hsu for subgroups of PSL2(Z).

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模群奇子群的同余检验

我们给出了确定SL2(Z)的有限指数子群是否是同余子群的一个计算有效准则，推广了Hsu关于PSL2(Z)子群的早期工作。

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

Lms Journal of Computation and Mathematics MATHEMATICS, APPLIED-MATHEMATICS

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： LMS Journal of Computation and Mathematics has ceased publication. Its final volume is Volume 20 (2017). LMS Journal of Computation and Mathematics is an electronic-only resource that comprises papers on the computational aspects of mathematics, mathematical aspects of computation, and papers in mathematics which benefit from having been published electronically. The journal is refereed to the same high standard as the established LMS journals, and carries a commitment from the LMS to keep it archived into the indefinite future. Access is free until further notice.