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Multiple equilibrium under CES preferences

机译:CES偏好下的多重均衡

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Under the simplifying assumptions that (1) there are two commodities and two agents, (2) production (endowment) of each commodity per period is fixed, (3) preferences of the two agents are of CES type, and (4) both the endowments and the CES preferences are mirror images of each other (called “supersymmetry”), it is shown that (a) there always exists a symmetric equilibrium with a unit price ratio, (b) a sufficient condition for the stability (hence uniqueness) of this symmetric equilibrium is that the elasticity of substitution satisfy , and (c) multiple (triple) equilibrium is possible if and only if each agent has a relative preference for the good that is sold (“exported”) to the other agent. Further conditions for multiple equilibrium are derived.
机译:在简化假设下,(1)有两种商品和两种媒介,(2)每个商品在每个时期的生产(end赋)是固定的,(3)这两种媒介的偏好是CES类型,(4)赋和CES偏好是彼此的镜像(称为“超对称”),这表明(a)始终存在具有单价比率的对称均衡,(b)稳定性的充分条件(因此具有唯一性)对称均衡的一个含义是替代弹性满足,并且(c)多重(三重)均衡是可能的,并且仅当每个代理相对于出售(“出口”)另一代理的商品具有相对优先权时。得出了多重平衡的进一步条件。

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