YES Problem: f(s(X),Y) -> h(s(f(h(Y),X))) Proof: Matrix Interpretation Processor: dim=3 interpretation: [1 1 0] [1 0 0] [f](x0, x1) = [0 0 0]x0 + [0 0 0]x1 [0 0 0] [0 0 0] , [1 0 0] [0] [s](x0) = [0 0 0]x0 + [1] [0 0 0] [0], [1 0 0] [h](x0) = [0 0 0]x0 [0 0 0] orientation: [1 0 0] [1 0 0] [1] [1 0 0] [1 0 0] f(s(X),Y) = [0 0 0]X + [0 0 0]Y + [0] >= [0 0 0]X + [0 0 0]Y = h(s(f(h(Y),X))) [0 0 0] [0 0 0] [0] [0 0 0] [0 0 0] problem: Qed