MathDB
Function

Source:

February 21, 2006
algebraFunctional inequalityfunctional equationIMO 1977IMO ShortlistIMO

Problem Statement

Find all functions f:Nā†’Nf : \mathbb{N}\rightarrow \mathbb{N} satisfying following condition: f(n+1)>f(f(n)),   \forall n \in \mathbb{N}.
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