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Dear Mr. Thanh Tu, Thanks for the interest in the code. You may find an updated code for the H-function below. [mcode]Needs["NumericalCalculus`"]; corr[list_] := corr[list] = If[Length[list] > 0, {1 - list[[1]], list[[2]]}, {}]; SPA[a_] := ...
Hello everyone! Todd R. and I were doing some experiments with 2D CAs. Our goal was to find something unusual. After a few tries, by observing a slice of the evolution of 2D totalistic rule 169, we observed some "circular" patterns. The code to get...