YES TRS: minus(minus(x)) -> x minus(h(x)) -> h(minus(x)) minus(f(x,y)) -> f(minus(y),minus(x)) max/plus interpretations on N: minus_A(x1) = max{0, x1} minus#_A(x1) = max{0, x1} h_A(x1) = max{0, x1} h#_A(x1) = max{0, x1} f_A(x1,x2) = max{0, x1, x2} f#_A(x1,x2) = max{0, x1, x2} precedence: minus > h = f