YES TRS: f(0()) -> s(0()) f(s(0())) -> s(0()) f(s(s(x))) -> f(f(s(x))) max/plus interpretations on N: f_A(x1) = max{11, 2 + x1} f#_A(x1) = max{11, 2 + x1} 0_A = 1 0#_A = 1 s_A(x1) = max{7, 5 + x1} s#_A(x1) = max{7, 5 + x1} precedence: s > f > 0