 Neutrality: For any admissible profile \(\langle v_1, v_2 , \ldots ,v_n\rangle\), if the votes for the two alternatives are reversed, the social decision is reversed too, i.e., \(f(-v_1, -v_2 , \ldots ,-v_n) = -f(v_1, v_2 , \ldots ,v_n)\).