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Determining a Regular Language by Glider-Based Structures called Phases fi –1 in Rule
Genaro J. Martínez, Harold V. McIntosh, Juan C. Seck Tuoh Mora and Sergio V. Chapa Vergara

Rule 110 is a complex elementary cellular automaton able of support universal computation and complicated collision-based reactions between gliders. We propose a representation for coding initial conditions by means of a finite subset of regular expressions. The sequences are extracted both from de Bruijn diagrams and tiles specifying a set of phases f i_1 for each glider in Rule 110. The subset of regular expressions is explained in detail.

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