## Estimating fractal dimension

JOSA A, Vol. 7, Issue 6, pp. 1055-1073 (1990)

http://dx.doi.org/10.1364/JOSAA.7.001055

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### Abstract

Fractals arise from a variety of sources and have been observed in nature and on computer screens. One of the exceptional characteristics of fractals is that they can be described by a noninteger dimension. The geometry of fractals and the mathematics of fractal dimension have provided useful tools for a variety of scientific disciplines, among which is chaos. Chaotic dynamical systems exhibit trajectories in their phase space that converge to a strange attractor. The fractal dimension of this attractor counts the effective number of degrees of freedom in the dynamical system and thus quantifies its complexity. In recent years, numerical methods have been developed for estimating the dimension directly from the observed behavior of the physical system. The purpose of this paper is to survey briefly the kinds of fractals that appear in scientific research, to discuss the application of fractals to nonlinear dynamical systems, and finally to review more comprehensively the state of the art in numerical methods for estimating the fractal dimension of a strange attractor.

© 1990 Optical Society of America

**Citation**

James Theiler, "Estimating fractal dimension," J. Opt. Soc. Am. A **7**, 1055-1073 (1990)

http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-7-6-1055

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