Increasing Returns to Scale and Nonlinear Endogenous Fluctuations in a Simple Overlapping Generations Model: A Pedagogical Note

نویسنده

  • Teresa LLOYD-BRAGA
چکیده

– We study the role of increasing returns (in production) on the emergence of nonlinear endogenous fluctuations in a simple overlapping generations model. We specify conditions for the occurrence of local flip and Hopf bifurcations in terms of relevant parameters. We, also, present orbits exhibiting endogenous fluctuations, for some numerical examples. Our results, in compliance with other recent works, suggest that the environment in which endogenous fluctuations can emerge approaches those considered more plausible when there are increasing returns to scale. Rendements croissants d’échelle et fluctuations endogènes non linéaires dans un modèle simple à générations imbriquées : une note pédagogique RÉSUMÉ. – Nous étudions les effets des rendements croissants (dans la production) sur l’émergence de fluctuations endogènes non linéaires, dans un modèle simple à générations imbriquées. Les conditions garantissant l’occurrence des bifurcations locales flip et Hopf sont données sur un ensemble de paramètres pertinents. Nous présentons quelques exemples numériques d’orbites avec fluctuations endogènes. Les résultats, en accord avec d’autres études récentes, suggèrent que l’environnement économique favorable à l’émergence des fluctuations endogènes s’approche de ceux considérés comme plausibles en situation de rendements croissants d’échelle. * Teresa LLOYD-BRAGA: Universidade Católica Portuguesa, Faculdade e Ciências Económicas e Empresariais, Lisboa. ANNALES D’ÉCONOMIE ET DE STATISTIQUE. – N° 59 – 2000

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تاریخ انتشار 2000