YES TRS: not(true()) -> false() not(false()) -> true() odd(0()) -> false() odd(s(x)) -> not(odd(x)) +(x,0()) -> x +(x,s(y)) -> s(+(x,y)) +(s(x),y) -> s(+(x,y)) linear polynomial interpretations on N: not_A(x1) = 1 not#_A(x1) = 2 true_A = 1 true#_A = 0 false_A = 1 false#_A = 1 odd_A(x1) = 1 odd#_A(x1) = 3 0_A = 1 0#_A = 0 s_A(x1) = 1 s#_A(x1) = 0 +_A(x1,x2) = x1 + 1 +#_A(x1,x2) = 1 precedence: s = + > odd > not > false > true = 0