Nielsen-Thurston reducibility and renormalization |
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Authors: | Olivier Courcelle Jean-Marc Gambaudo Charles Tresser |
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Institution: | Section de Mathématiques, Université de Genève, CP240, CH1211 Genève 24, Suisse ; INLN, 1361 route des lucioles, Sophia-Antipolis, 06560 Valbonne, France ; IBM, P.O. Box 218, Yorktown Heights, New York 10598 |
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Abstract: | Consider an orientation preserving homeomorphism of the 2-disk with an infinite set of nested periodic orbits , such that, for all , the restriction of to the complement of the first orbits, from to , is times reducible in the sense of Nielsen and Thurston. We define combinatorial renormalization operators for such maps, and study the fixed points of these operators. We also recall the corresponding theory for endomorphisms of the interval, and give elements of comparison of the theories in one and two dimensions. |
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