Home›Browse›modular group🌐EnglishEnglishEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaРусский한국어中文日本語EntityQ1834342· pop 13· linked from 246 articlesmodular groupSign in to saveAlso known as PSL(2;ℤ)orientation-preserving mapping class group of the torusWikidata factsPart ofSL2(R)Sources (3)wikidata.orgdocs.openalex.orgweb.archive.orgvia Wikidata · CC0Available in 13 languagesEspañolFrançais日本語РусскийPortuguêsItalianoHebrewNederlandsPolskiSvenskaUkrainian한국어via Wikidata sitelinks · CC0