Existence of quadratic Hubbard trees

• Autorzy: Henk Bruin , Alexandra Kaffl , Dierk Schleicher
• Języki publikacji: EN

Abstrakty

EN

A (quadratic) Hubbard tree is an invariant tree connecting the critical orbit within the Julia set of a postcritically finite (quadratic) polynomial. It is easy to read off the kneading sequences from a quadratic Hubbard tree; the result in this paper handles the converse direction. Not every sequence on two symbols is realized as the kneading sequence of a real or complex quadratic polynomial. Milnor and Thurston classified all real-admissible sequences, and we give a classification of all complex-admissible sequences in [BS]. In order to do this, we show here that every periodic or preperiodic sequence is realized by a unique abstract Hubbard tree. Real or complex admissibility of the sequence depends on whether this abstract tree can be embedded into the real line or complex plane so that the dynamics preserves the embedded, and this can be studied in terms of branch points of the abstract Hubbard tree.

Kategorie tematyczne

• 37E25: Maps of trees and graphs
• 37F20: Combinatorics and topology
• 37B10: Symbolic dynamics

• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Fundamenta Mathematicae
• Rocznik: 2009
• Tom: 202
• Numer: 3
• Strony: 251-279

Daty

wydano

2009

Twórcy

autor

Henk Bruin

• Department of Mathematics, University of Surrey, Guildford GU2 7XH, United Kingdom

autor

Alexandra Kaffl

• School of Engineering and Science, Jacobs University Bremen, P.O. Box 750 561, D-28725 Bremen, Germany

autor

Dierk Schleicher

• School of Engineering and Science, Jacobs University Bremen, P.O. Box 750 561, D-28725 Bremen, Germany

Identyfikatory

DOI

10.4064/fm202-3-4