Heterogeneous players in a Cournot model with differentiated products

Andrea Caravaggio () and Mauro Sodini ()
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Andrea Caravaggio: University of Macerata
Mauro Sodini: University of Pisa

Decisions in Economics and Finance, 2018, vol. 41, issue 2, No 10, 277-295

Abstract: Abstract In this article, we analyse a duopolistic Cournotian game with firms producing differentiated goods, marginal costs are constant and demand functions are microfounded. We consider firms adopting different decisional mechanisms which are based on a reduced degree of rationality. In particular, we assume that a firm adopts the local monopolistic approximation approach, while the rival adjusts its output level according to the gradient rule. We provide conditions for the stability of the Nash equilibrium and investigate some bifurcation scenarios as parameters vary. The main finding of the article is that both a high level and a low level in goods differentiation may have a destabilising role in the system.

Keywords: Bifurcation; Cournot game; Heterogeneous players; Product differentiation (search for similar items in EconPapers)
JEL-codes: C62 L13 (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1007/s10203-018-0228-x

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