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Defaults and infinite prices in a stochastic pure exchange model

机译:随机纯交换模型中的违约和无限价格

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摘要

A stochastic pure exchange model with perfect foresight is considered. Real indeterminacy arises in this setting in the form of continuum of equilibria corresponding to different commodity allocations. The cause of real indeterminacy is arbitrariness of prices at the final date. If some arbitrary price tends to infinity then the equilibrium in the limit has an intuitive economic interpretation. The limiting equilibrium with formally infinite prices we interpret as an equilibrium with default: if a special state of the environment occurs, consumers may forget about their debts and savings and start new life from scratch. Existence of equilibria with defaults is proven. A numerical experiment shows that in some cases equilibria with finite prices are Pareto dominated by equilibria with defaults.
机译:考虑具有完美预见力的随机纯交换模型。在这种情况下,真正的不确定性以对应于不同商品分配的均衡连续性形式出现。真正不确定性的原因是最终日期价格的任意性。如果某个任意价格趋于无穷大,则极限中的均衡具有直观的经济解释。具有正式无限价格的有限均衡,我们将其解释为违约均衡:如果发生特殊的环境状况,消费者可能会忘记自己的债务和储蓄,并从头开始新的生活。证明存在违约均衡。数值实验表明,在某些情况下,有限价格均衡由帕雷托(Pareto)主导,违约均衡。

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