Conical limit sets and continued fractions

Crane, Edward and Short, Ian (2007). Conical limit sets and continued fractions. Conformal Geometry and Dynamics, 11 pp. 224–249.

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URL:	http://www.ams.org/journals/ecgd/2007-11-16/S1088-...
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Abstract

Inspired by questions of convergence in continued fraction theory, Erdős, Piranian and Thron studied the possible sets of divergence for arbitrary sequences of Möbius maps acting on the Riemann sphere, S². By identifying S² with the boundary of three-dimensional hyperbolic space, H³, we show that these sets of divergence are precisely the sets that arise as conical limit sets of subsets of H³. Using hyperbolic geometry, we give simple geometric proofs of the theorems of Erdős, Piranian and Thron that generalise to arbitrary dimensions. New results are also obtained about the class of conical limit sets; for example, it is closed under locally quasisymmetric homeomorphisms. Applications are given to continued fractions.

Item Type:	Journal Item
Copyright Holders:	2007 American Mathematical Society
ISSN:	1088-4173
Academic Unit/School:	Faculty of Science, Technology, Engineering and Mathematics (STEM) > Mathematics and Statistics Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID:	22457
Depositing User:	Ian Short
Date Deposited:	29 Jul 2010 11:31
Last Modified:	09 Dec 2018 01:37
URI:	http://oro.open.ac.uk/id/eprint/22457
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