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Erdős problem 101

Given nn points in R2\mathbb{R}^2, no five of which are on a line, the number of lines containing four points is o(n2)o(n^2).

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How far the record reaches3 of 6 stages
  1. Sourceerdos-problems
  2. StatementRetained
  3. Formal1 retained
  4. ResolutionNone filed
  5. WorkNone recorded
  6. DecisionNone here
  7. The questionNot reached
What this record is missingResolution

No source retained here records an outcome for this question.

Its collection still marks it open.

Where the source files it109 share a topic
Erdős problem 94accepted
Carrying a Standing. Browse the topic.