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Frequency Spectrum of a Step of a Substitution System

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In this Demonstration we build spectra from the nested sequences produced by one-dimensional substitution systems. The rule icon for the substitution system is shown at the top, the spectrum is in the middle, and the substitution system evolution is at the bottom.

Contributed by: Abigail Nussey (March 2011)
Based on a program by: Oyvind Tafjord
Open content licensed under CC BY-NC-SA

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See Stephen Wolfram's A New Kind of Science pp. 585–588.

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