Let $A$ $\subseteq$ $\mathbb{R}$ be a Lebesgue measurable set with positive measure.Prove that $\forall$ $n$$\in$ $\mathbb{N}$, $A$ contains an arithmetic progression of length $n$. Can somenone help me with this? Thank you in advance!
2026-04-24 03:56:23.1777002983
Measurable sets and arithmetic progressions
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