Gross substitutes and endowed assignment valuations
Gross substitutes and endowed assignment valuations
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总替代和赋予任务估值
DOI：
10.3982/te1840
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发表时间：
2015
影响因子：
1.7
通讯作者：
R. Leme
中科院分区：
文献类型：
--
作者：
M. Ostrovsky;R. Leme
我们表明，满足Kelso和Crawford（1982）总替代状况的偏好类别比Hatfield and Milgrom（2005）的endow赋予分配估值类别严格大，因此解决了后一篇论文所提出的开放问题。特别是，我们的结果意味着，并非每个可替代的估值函数都可以“分解”成单位需求估值的组合。
We show that the class of preferences satisfying the Gross Substitutes condition of Kelso and Crawford (1982) is strictly larger than the class of Endowed Assignment Valuations of Hatfield and Milgrom (2005), thus resolving the open question posed by the latter paper. In particular, our result implies that not every substitutable valuation function can be "decomposed" into a combination of unit-demand valuations.