<p>The Erdős similarity conjecture was proposed by P. Erdős in 1974. The conjecture remains open for exponentially decaying sequences as well as Cantor sets that have both Newhouse thickness and Hausdorff dimension zero. In this article—written 50 years after the conjecture was first proposed—we review progress on some new variants of the original problem, namely the bi-Lipschitz variant, the topological variant, and a variant “in the large”. These problems were recently studied by the authors and their collaborators. Each of them offers new perspectives on the original conjecture.</p>

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Fifty years of the Erdős similarity conjecture

  • Yeonwook Jung,
  • Chun-Kit Lai,
  • Yuveshen Mooroogen

摘要

The Erdős similarity conjecture was proposed by P. Erdős in 1974. The conjecture remains open for exponentially decaying sequences as well as Cantor sets that have both Newhouse thickness and Hausdorff dimension zero. In this article—written 50 years after the conjecture was first proposed—we review progress on some new variants of the original problem, namely the bi-Lipschitz variant, the topological variant, and a variant “in the large”. These problems were recently studied by the authors and their collaborators. Each of them offers new perspectives on the original conjecture.