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Erdős problem 1071

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Is there a region RR with a maximal set of disjoint unit line segments that is countably infinite? Solved affirmatively by [Fo99], who gave an explicit construction.

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  • Formalization

    Erdős AI contributions wiki · 29 Jan, 2026 (second part); 12 Feb, 2026 (first part)

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    Aleph Prover, Aristotle, GPT
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