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m D.Lazard moved page Fixed-point theorem to Fixed-point theorems over redirect: WP:PLURAL#Exceptions |
Adding local short description: "Condition for a mathematical function to map some value to itself", overriding Wikidata description "one of several theorems stating that, under certain conditions, a function f will have an argument x for which f(x) = x" (Shortdesc helper) |
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{{Short description|Condition for a mathematical function to map some value to itself}}
In [[mathematics]], a '''fixed-point theorem''' is a result saying that a [[function (mathematics)|function]] ''F'' will have at least one [[fixed point (mathematics)|fixed point]] (a point ''x'' for which ''F''(''x'') = ''x''), under some conditions on ''F'' that can be stated in general terms.<ref>{{cite book
| editor = Brown, R. F.
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