日本新瓦尔拉斯经济学家根岸隆史 Takashi Negishi证明,<ref>{{cite journal |last=Negishi |first=Takashi |date=1960 |title=Welfare Economics and Existence of an Equilibrium for a Competitive Economy |journal=Metroeconomica |volume=12 |issue=2–3 |pages=92–97 |doi=10.1111/j.1467-999X.1960.tb00275.x }}</ref>在某些假设下,该命题的逆命题也成立,即对于每一个帕累托有效的配置''x'',都存在一个正向量''a'',使最大化。哈尔·瓦里安提供了一个较短的证明。<ref>{{cite journal |doi=10.1016/0047-2727(76)90018-9 |title=Two problems in the theory of fairness |journal=Journal of Public Economics |volume=5 |issue=3–4 |pages=249–260 |year=1976 |last1=Varian |first1=Hal R. |hdl=1721.1/64180 |hdl-access=free }}</ref> | 日本新瓦尔拉斯经济学家根岸隆史 Takashi Negishi证明,<ref>{{cite journal |last=Negishi |first=Takashi |date=1960 |title=Welfare Economics and Existence of an Equilibrium for a Competitive Economy |journal=Metroeconomica |volume=12 |issue=2–3 |pages=92–97 |doi=10.1111/j.1467-999X.1960.tb00275.x }}</ref>在某些假设下,该命题的逆命题也成立,即对于每一个帕累托有效的配置''x'',都存在一个正向量''a'',使最大化。哈尔·瓦里安提供了一个较短的证明。<ref>{{cite journal |doi=10.1016/0047-2727(76)90018-9 |title=Two problems in the theory of fairness |journal=Journal of Public Economics |volume=5 |issue=3–4 |pages=249–260 |year=1976 |last1=Varian |first1=Hal R. |hdl=1721.1/64180 |hdl-access=free }}</ref> |