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FormalConjectures.ErdosProblems.«172»

Erdős Problem 172 #

Reference: erdosproblems.com/172

theorem Erdos172.erdos_172 :
(∀ (n : ) (color : Fin n) (m : ), ∃ (A : Finset ), A.card m ∃ (c : Fin n), ∀ (S : Finset { x : // x A }), S.Nonemptycolor (∑ xS, x) = c color (∏ xS, x) = c) sorry

Is it true that in any finite colouring of $\mathbb{N}$ there exist arbitrarily large finite $A$ such that all sums and products of distinct elements in $A$ are the same colour?