Abstract
We prove that in Conway's Game of Life cellular automaton with initial configuration irrat2, the linear growth rate of the number of live cells is irrational, as conjectured in 1991 by Dean Hickerson. Our proof uses intertwined substitution sequences.
Citation
William Geller. Michał Misiurewicz. "Irrational life." Experiment. Math. 14 (3) 271 - 275, 2005.
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