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Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2020 MCQ for Transactions of the American Mathematical Society is 1.48.

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Topological horseshoes
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by Judy Kennedy and James A. Yorke PDF
Trans. Amer. Math. Soc. 353 (2001), 2513-2530 Request permission

Abstract:

When does a continuous map have chaotic dynamics in a set $Q$? More specifically, when does it factor over a shift on $M$ symbols? This paper is an attempt to clarify some of the issues when there is no hyperbolicity assumed. We find that the key is to define a “crossing number” for that set $Q$. If that number is $M$ and $M>1$, then $Q$ contains a compact invariant set which factors over a shift on $M$ symbols.
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Additional Information
  • Judy Kennedy
  • Affiliation: Department of Mathematical Sciences, University of Delaware, Newark, Delaware 19716
  • Email: jkennedy@math.udel.edu
  • James A. Yorke
  • Affiliation: Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742
  • Email: yorke@ipst.umd.edu
  • Received by editor(s): March 16, 1998
  • Received by editor(s) in revised form: December 21, 1998
  • Published electronically: February 15, 2001
  • Additional Notes: This research was supported by the National Science Foundation, Division of Mathematical Sciences
  • © Copyright 2001 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 353 (2001), 2513-2530
  • MSC (1991): Primary 58F12, 54F20; Secondary 54F50, 58F20
  • DOI: https://doi.org/10.1090/S0002-9947-01-02586-7
  • MathSciNet review: 1707195