🌐EnglishEnglishDeutschFrançaisРусский한국어中文日本語EntityQ233220· pop 12· linked from 73 articlessecond fundamental formquadratic form related to curvatures of surfacesWikidata factsImageSecond fundamental form.svgSources (3)wikidata.orgdocs.openalex.orgweb.archive.orgvia Wikidata · CC0Available in 12 languagesFrançaisDeutsch中文日本語РусскийCatalanGreekHebrewHungarianUkrainianConnectionstangentEntitydifferential geometry of surfacesEntityCategoriesCurvature (mathematics)Differential geometryDifferential geometry of surfacesRiemannian geometryTensors