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1IntroductionArrow'sproofforarrow'sgeneralpossibilitytheorem(GPT)standsontheconditionthatsocialchoiceisdefinedoverailpairsofalternativesl'l,whereas,inmosteconomicproblems,thesetoffeasiblealternativescontainsmorethantwoelements.IthasbeensuspectedthattherootoftheaggregationproblemsencounteredinthetheoryofsocialchoicedoesnotlieinthisspecialaspectofArrow'sframework.Thismotivatesthesearchfornonbinaryimpossibilitytheoremsl2].Inadelicatepaper,GretherandPlotthaveshownthatArrow'sGPTholdswhenailfini… 相似文献
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