YES TRS: min(x,0()) -> 0() min(0(),y) -> 0() min(s(x),s(y)) -> s(min(x,y)) max(x,0()) -> x max(0(),y) -> y max(s(x),s(y)) -> s(max(x,y)) -(x,0()) -> x -(s(x),s(y)) -> -(x,y) gcd(s(x),0()) -> s(x) gcd(0(),s(x)) -> s(x) gcd(s(x),s(y)) -> gcd(-(max(x,y),min(x,y)),s(min(x,y))) max/plus interpretations on N: min_A(x1,x2) = max{12, 10 + x1, -35} min#_A(x1,x2) = max{31, -1 + x1, 30} 0_A = 12 0#_A = 0 s_A(x1) = max{48, 34 + x1} s#_A(x1) = max{46, 22 + x1} max_A(x1,x2) = max{2, 1 + x1, 18 + x2} max#_A(x1,x2) = max{22, -9 + x1, 6 + x2} -_A(x1,x2) = max{18, x1, -9 + x2} -#_A(x1,x2) = max{74, 73, 72} gcd_A(x1,x2) = max{11, 11 + x1, x2} gcd#_A(x1,x2) = max{58, 26 + x1, 11 + x2} precedence: max > s > gcd > min = - > 0