Forcing relation on patterns of invariant sets and reductions of interval maps
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Abstract:
Patterns of invariant sets of interval maps are the equivalence classes of invariant sets under order-preserving conjugacy. In this paper we study forcing relations on patterns of invariant sets and reductions of interval maps. We show that for any interval map $f$ and any nonempty invariant set $S$ of $f$ there exists a reduction $g$ of $f$ such that $g|_S=f|_S$ and $g$ is a monotonic extension of $f|_S$. By means of reductions of interval maps, we obtain some general results about forcing relations between the patterns of invariant sets of interval maps, which extend known results about forcing relations between patterns of periodic orbits. We also give sufficient conditions for a general pattern to force a given minimal pattern in the sense of Bobok. Moreover, as applications, we give a new and simple proof of the converse of the Sharkovskiĭ Theorem and study fissions of periodic orbits, entropies of patterns, etc.References
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Additional Information
- Jie-Hua Mai
- Affiliation: Institute of Mathematics, Shantou University, Shantou, Guangdong, 515063, People’s Republic of China
- Email: jhmai@stu.edu.cn
- Song Shao
- Affiliation: Department of Mathematics, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China
- Email: songshao@ustc.edu.cn
- Received by editor(s): October 22, 2008
- Received by editor(s) in revised form: April 9, 2009
- Published electronically: December 8, 2010
- Additional Notes: The first author was supported by the Special Foundation of National Prior Basis Research of China (Grant No. G1999075108).
The second author was supported by National Natural Science Foundation of China (Grant No. 10871186). - © Copyright 2010
American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication. - Journal: Trans. Amer. Math. Soc. 363 (2011), 2517-2549
- MSC (2010): Primary 37E15, 37E05
- DOI: https://doi.org/10.1090/S0002-9947-2010-05103-7
- MathSciNet review: 2763725