Home›Additive number theory›Lagrange's four-square theorem🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaРусскийالعربية한국어中文日本語EntityQ756946· pop 27· linked from 60 articlesLagrange's four-square theoremtheoremAvailable in 27 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةConnectionsSrinivasa RamanujanEntityJoseph-Louis LagrangeEntityCategoriesAdditive number theorySquares in number theoryTheorems in number theory