Determining a regular language by glider-based structures called phases fi_1 in Rule 110
Genaro J. Martínez, Harold V. McIntosh, Juan Carlos Seck-Tuoh-Mora, Sergio V. Chapa Vergara · arXiv (Cornell University) · 2007
Rule 110 is a complex elementary cellular automaton able of supporting 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 fi_1 for each glider in Rule 110. The subset of regular expressions is explained in detail.