Home›Hyperbolic geometry›هندسه هذلولوی🌐فارسیEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtTürkçeРусскийالعربيةفارسیไทย한국어中文日本語EntityQ209306· pop 48· linked from 576 articlesهندسه هذلولویAlso known as Lobachevskian geometry, Bolyai-Lobachevskian geometrytype of non-Euclidean geometryWikidata factsImageThe modular group PSL 2(Z).svgSources (4)wikidata.orgthes.bncf.firenze.sbn.itdocs.openalex.orgweb.archive.orgvia Wikidata · CC0Gallery (12)Available in 48 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةAlbanianConnectionsangleEntitymetric spaceEntityCategoriesHyperbolic geometry