Among his contributions the most significant is to justify the theorem of the impossibility of the Paretian liberal that there is no a social decision function that meets unrestricted domain, Paretian principle and minimal liberty simultaneously, which he
Among his contributions the most significant is to justify the theorem of the impossibility of the Paretian liberal that there is no a social decision function that meets unrestricted domain, Paretian principle and minimal liberty simultaneously, which he
而他影响最大的贡献是证明了帕累托自由的不可能，后者为他赢得诺贝尔经济学奖奠定了基础，其基本含义指不存在一种可以同时满足无限制域、帕累托原则和最低限度的自由这三个条件的社会决策函数。