geometry-topology / Combinatorial Geometry

Erdős's Planar Unit Distance Conjecture

Conjectured upper bound on how many pairs among $n$ points in the plane can be exactly one unit apart.

40Significance / 100
1Frontier events
0Verification tasks
0Recorded attempts

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geometry-topologyMay 1, 2026Significance 40/100Registry: expert verified

Erdős's Planar Unit Distance Conjecture

Prior state unknowndisproved

Conjectured upper bound on how many pairs among $n$ points in the plane can be exactly one unit apart.

SourceReplayReproducedFormal proofStatement auditExternal checkExpert reviewPeer review

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Conjectured upper bound on how many pairs among $n$ points in the plane can be exactly one unit apart.

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