YES Problem: h(f(x),y) -> f(g(x,y)) g(x,y) -> h(x,y) Proof: DP Processor: DPs: h#(f(x),y) -> g#(x,y) g#(x,y) -> h#(x,y) TRS: h(f(x),y) -> f(g(x,y)) g(x,y) -> h(x,y) Usable Rule Processor: DPs: h#(f(x),y) -> g#(x,y) g#(x,y) -> h#(x,y) TRS: Arctic Interpretation Processor: dimension: 1 usable rules: interpretation: [g#](x0, x1) = 2x0, [h#](x0, x1) = 1x0, [f](x0) = 6x0 + -3 orientation: h#(f(x),y) = 7x + -2 >= 2x = g#(x,y) g#(x,y) = 2x >= 1x = h#(x,y) problem: DPs: TRS: Qed