🌐한국어EnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaРусскийالعربية한국어中文日本語EntityQ315296· pop 22· linked from 82 articles에를랑겐 프로그램research program on the symmetries of geometryAvailable in 22 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةCatalanConnectionsEuclidean geometryEntitynon-Euclidean geometryEntityCategoriesClassical geometryErlangenGroup theoryHomogeneous spacesSymmetry