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Erdős Problems

1,217 source-owned questions · 604 with a formal statement · searchable by statement, number, topic and source status.

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Source status, exact formal material, and reviewed Results are separate signals.

  • Open per source608
  • Resolved per source556
  • Other source status53
Exact formal statement available604 / 1,217
With Repository-reviewed evidence2 / 1,217
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Problems

4 Problems

SelectNumberQuestionOpen
#121No statement retained — open to read what the source holdsSource says disprovedNo formal declaration
#222No statement retained — open to read what the source holdsSource says openNo formal declaration
#773No statement retained — open to read what the source holdsSource says openNo formal declaration
#888What is the size of the largest A⊆{1,…,n}A\subseteq \{1,\ldots,n\} such that if a≤b≤c≤d∈Aa\leq b\leq c\leq d\in A are such that abcdabcd is a square then ad=bcad=bc?Source says solvedFormalized