The discrete separation theorem and price adjustment directions in markets with heterogeneous commodities
The discrete separation theorem and price adjustment directions in markets with heterogeneous commodities
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异质商品市场的离散分离定理与价格调整方向
DOI:
10.1016/j.dam.2019.08.022
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发表时间:
2020
期刊:
影响因子:
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通讯作者:
Koji Yokote
中科院分区:
文献类型:
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作者:
Koji Yokote
The separation theorem in discrete convex analysis states that two disjoint discrete convex sets can be separated by a hyperplane with a 0–1 normal vector. We apply this theorem to markets with heterogeneous commodities and uncover the mathematical structure behind price adjustment processes. When p is not an equilibrium price vector, ie, when aggregate demand and aggregate supply are disjoint, the separation theorem indicates the existence of overdemanded/underdemanded items. This observation yields a generalization of Hall’s (1935) theorem and a characterization of equilibrium price vectors by Gul and Stacchetti (2000). Building on this characterization, we show that adjusting the prices of overdemanded/underdemanded items corresponds to Ausbel’s (2006) auction. We further extend our approach to markets with continuous commodities and uncover a striking connection between auctions and classical t a ˆ tonnement processes.
DOI:
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作者:
Shirai;Y.. Aspect. In P. C. Hogan (Ed.)
通讯作者:
Y.. Aspect. In P. C. Hogan (Ed.)
DOI:
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发表时间:
2014
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作者:
浅沼博;国方淳;海寳龍史;柳迫徹郎;Kazuo Murota
通讯作者:
Kazuo Murota