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Existence, Optimality and Dynamics of Equilibria with Endogenous Time Preference

Listed author(s):
  • Cuong Le Van

    ()

    (CES - Centre d'économie de la Sorbonne - UP1 - Université Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique, University of Exeter Business School - University of Exeter Business School, VCREME - VanXuan Center of Research in Economics, Management and Environment - VanXuan Center of Research in Economics, Management and Environment, PSE - Paris School of Economics)

  • Cagri Saglam

    ()

    (Bilkent University [Ankara])

  • Selman Erol

    (Bilkent University [Ankara])

To account for the development patterns that differ considerably among economies in the long run, a variety of one-sector models that incorporate some degree of market imperfections based on technological external effects and increasing returns have been presented. This paper studies the dynamic implications of, yet another mechanism, the endogenous rate of time preference depending on the stock of capital, in a one-sector growth model. The planner's problem is presented and the optimal paths are characterized. We show that development or poverty traps can arise even under a strictly convex technology. We also show that even under a convex-concave technology, the optimal path can exhibit global convergence to a unique stationary point. The multipliers system associated with an optimal path is proven to be the supporting price system of a competitive equilibrium under externality and detailed results concerning the properties of optimal (equilibrium) paths are provided. We show that the model exhibits globally monotone capital sequences yielding a richer set of potential dynamics than the classic model with exogenous discounting.

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Paper provided by HAL in its series Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) with number halshs-00639731.

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Date of creation: Mar 2011
Publication status: Published in Journal of Mathematical Economics, Elsevier, 2011, 47 (2), pp.170-179
Handle: RePEc:hal:cesptp:halshs-00639731
Note: View the original document on HAL open archive server: https://halshs.archives-ouvertes.fr/halshs-00639731
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