olymmath

IMO 1987 Problem 4

  • Day 2

Prove that there is no function ff from the set of non-negative integers into itself such that f(f(n))=n+1987f(f(n))=n+1987 for all nn .

Official text Transcription from AI-MO AoPS, checked word for word against the official paper. Quoted with source.

Official text: IMO 1987 official English paper, page 2.

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Locator imo/1987/p4 · Tag K2X55XXY6B · Edit this page on GitHub · Keys: j next, k previous