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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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The Koch snowflake curve is tube-null
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by Viktor Harangi PDF
Proc. Amer. Math. Soc. 139 (2011), 1375-1381 Request permission

Abstract:

We show that the Koch curve is tube-null; that is, it can be covered by strips of arbitrarily small total width. In fact, we prove the following stronger result: the Koch curve can be decomposed into three sets such that each can be projected to a line in such a way that the image has Hausdorff dimension less than $1$. The proof contains geometric, combinatorial, algebraic and probabilistic arguments.
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Additional Information
  • Viktor Harangi
  • Affiliation: Department of Analysis, Eötvös Loránd University, Pázmány Péter sétány 1/c, H-1117 Budapest, Hungary
  • Email: bizkit@cs.elte.hu
  • Received by editor(s): April 15, 2010
  • Published electronically: December 1, 2010
  • Additional Notes: The author was supported by OTKA grant 72655.
  • Communicated by: Tatiana Toro
  • © Copyright 2010 American Mathematical Society
    The copyright for this article reverts to public domain 28 years after publication.
  • Journal: Proc. Amer. Math. Soc. 139 (2011), 1375-1381
  • MSC (2010): Primary 28A12, 28A80
  • DOI: https://doi.org/10.1090/S0002-9939-2010-10712-8
  • MathSciNet review: 2748429