Mestel, Benjamin David (1985) A computer assisted proof of universality for cubic critical maps of the circle with Golden Mean rotation number. PhD thesis, University of Warwick.

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Abstract

In order to explain the universal metric properties associated with the breakdown of invariant tori in dissipative dynamical systems, Ostlund, Rand, Sethna and Siggia together with Feigenbaum, Kadanoff and Shenker have developed a renormalisation group analysis for pairs of analytic functions that glue together to make a map of the circle. Using a method of Lanford's, we have obtained a proof of the existence and hyperbolicity of a non-trivial fixed point of the renormalisation transformation for rotation number equal to the golden mean (√5 - 1/2). The proof uses numerical estimates obtained rigorously with the aid of a computer. These computer calculations were based on a method of Eckmann, Koch and Wittwer.

Item Type:	Thesis or Dissertation (PhD)
Subjects:	Q Science > QA Mathematics
Library of Congress Subject Headings (LCSH):	Mappings (Mathematics), Dynamics, Golden section
Date:	September 1985
Institution:	University of Warwick
Theses Department:	Mathematics Institute
Thesis Type:	PhD
Publication Status:	Unpublished
Supervisor(s)/Advisor:	Rand, David A.
Sponsors:	Science and Engineering Research Council (Great Britain) (SERC) ; Cornell University. Center for Applied Mathematics
Extent:	[7], 176 p.
Language:	eng
URI:	http://wrap.warwick.ac.uk/id/eprint/50792

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