3.25/1.14 YES 3.25/1.14 3.25/1.14 Problem: 3.25/1.14 strict: 3.25/1.14 f(f(x)) -> x 3.25/1.14 weak: 3.25/1.14 f(x) -> g(f(g(f(x)))) 3.25/1.14 3.25/1.14 Proof: 3.25/1.14 String Reversal Processor: 3.25/1.14 strict: 3.25/1.14 f(f(x)) -> x 3.25/1.14 weak: 3.25/1.14 f(x) -> f(g(f(g(x)))) 3.25/1.14 Arctic Interpretation Processor: 3.25/1.14 dimension: 2 3.25/1.14 interpretation: 3.25/1.14 [0 -&] 3.25/1.14 [g](x0) = [0 -&]x0, 3.25/1.14 3.25/1.14 [0 0] 3.25/1.14 [f](x0) = [4 4]x0 3.25/1.14 orientation: 3.25/1.14 [4 4] 3.25/1.14 f(f(x)) = [8 8]x >= x = x 3.25/1.14 3.25/1.14 [0 0] [0 -&] 3.25/1.14 f(x) = [4 4]x >= [4 -&]x = f(g(f(g(x)))) 3.25/1.14 problem: 3.25/1.14 strict: 3.25/1.14 3.25/1.14 weak: 3.25/1.14 f(x) -> f(g(f(g(x)))) 3.25/1.14 Qed 3.25/1.14 EOF