YES TRS: minus(minus(x)) -> x minus(h(x)) -> h(minus(x)) minus(f(x,y)) -> f(minus(y),minus(x)) linear polynomial interpretations on N: minus_A(x1) = x1 minus#_A(x1) = x1 h_A(x1) = x1 h#_A(x1) = x1 f_A(x1,x2) = x1 + x2 f#_A(x1,x2) = x1 + x2 precedence: minus > h = f