Stephen Wolfram. Is the Universe Like π or Ω?. In Michael J. Dinneen, Bakhadyr Khoussainov, André Nies, editors, Computation, Physics and Beyond - International Workshop on Theoretical Computer Science, WTCS 2012, Dedicated to Cristian S. Calude on the Occasion of His 60th Birthday, Auckland, New Zealand, February 21-24, 2012, Revised Selected and Invited Papers. Volume 7160 of Lecture Notes in Computer Science, pages 315-319, Springer, 2012. [doi]
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