Heterogeneous duopoly with isoelastic demand function

Fabio Tramontana

Research output: Contribution to journalArticle

84 Citations (Scopus)


In this paper we analyze a duopolistic market with heterogeneous firms when the demand function is isoelastic (Puu, T., 1991. Chaos in duopoly pricing. Chaos, Solitons and Fractals 1, 573-581.). We consider the same heterogeneous firms of Zhang et al. (Zhang, J., Da, Q., Wang, Y., 2007. Analysis of nonlinear duopoly game with heterogeneous players. Economic Modelling 24, 138-148.) introducing a nonlinearity in the demand function instead of the cost function. Stability conditions of the Nash equilibrium and complex dynamics are studied. In particular we show two different routes to complicated dynamics: a cascade of flip bifurcations leading to periodic cycles (and chaos) and the Neimark-Sacker bifurcation which originates an attractive invariant closed curve. Comparisons with respect to the Puu model and the model of Zhang et al. are performed. © 2009 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)350-357
Number of pages8
JournalEconomic Modelling
Publication statusPublished - 2010


  • Cournot duopoly
  • Economics and Econometrics
  • Heterogeneous players
  • Local bifurcations
  • Nonlinear dynamical systems


Dive into the research topics of 'Heterogeneous duopoly with isoelastic demand function'. Together they form a unique fingerprint.

Cite this