🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTürkçeРусскийالعربيةفارسی中文日本語EntityQ1422068· pop 15· linked from 62 articlesfixed-point theoremone of several theorems stating that, under certain conditions, a function f will have an argument x for which f(x) = xAvailable in 15 languagesEspañolFrançaisDeutsch中文日本語ItalianoالعربيةCatalanCzechPolskiConnectionsNielsen theoryEntitymathematicsEntityCategoriesClosure operatorsFixed-point theoremsIterative methods