Inverse Limits and Models with Backward Dynamics
Some economic models like the cash-in-advance model of money have the property that the dynamical system characterizing equilibria is multi-valued going forward in time, but single-valued going backward in time, i.e., the model has backward dynamics. In this paper, we apply the theory of inverse limits to characterize topologically the set of equilibria in a dynamic economic model with this property. We show that such techniques are particularly well-suited for analyzing the dynamics going forward in time even though the dynamics are multi-valued in this direction. In particular, we analyze the inverse limit of the cash-in-advance model of money and illustrate how information about the inverse limit is useful for detecting or ruling out complicated dynamics.
|Date of creation:||2006|
|Date of revision:|
|Publication status:||Forthcoming in Topology and Its Applications.|
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Web page: http://lerner.udel.edu/departments/economics/department-economics/
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