Mystery
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Unsolved problems
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Open problem
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Mathematical problem
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Unsolved problems in mathematics
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Conjecture
List of unsolved problems in mathematics
Discrete geometry
Paul Erdős
Erdős distinct distances problem
In discrete geometry, the Erdős distinct distances problem states that between n distinct points on a plane there are at least n distinct distances. It was posed by Paul Erdős in 1946. In a 2010 prepr...