YES TRS: +(x,0()) -> x +(x,s(y)) -> s(+(x,y)) +(0(),y) -> y +(s(x),y) -> s(+(x,y)) +(x,+(y,z)) -> +(+(x,y),z) f(g(f(x))) -> f(h(s(0()),x)) f(g(h(x,y))) -> f(h(s(x),y)) f(h(x,h(y,z))) -> f(h(+(x,y),z)) max/plus interpretations on N: +_A(x1,x2) = max{2, x1, 14 + x2} +#_A(x1,x2) = max{1, 28, 15 + x2} 0_A = 25 0#_A = 23 s_A(x1) = max{1, x1} s#_A(x1) = max{26, 2} f_A(x1) = max{22, 13 + x1} f#_A(x1) = max{22, 24} g_A(x1) = max{1, 8 + x1} g#_A(x1) = max{25, 6 + x1} h_A(x1,x2) = max{22, -3 + x1, 15 + x2} h#_A(x1,x2) = max{0, 27, 19 + x2} precedence: g > h > + > s > f > 0