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Erdős problem 499

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The conjecture of van der Waerden, which states that the permanent of a doubly stochastic matrix is at least n−nn!n^{-n} n!.

Erdős Problems records this as proved (Lean).

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How far the record reaches4 of 6 stages
  1. Sourceerdos-problems
  2. StatementRetained
  3. Formal3 retained
  4. Resolutionproved (Lean)
  5. WorkNone recorded
  6. DecisionNone here
  7. The questionNot reached
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Combinatorics47
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