The Dixit–Stiglitz economy with a ‘small group’ of firms: A simple and robust equilibrium markup formula

Claude D’aspremont and Rodolphe Dos Santos Ferreira
Additional contact information
Claude D’aspremont: CORE - Center of Operation Research and Econometrics [Louvain] - UCL - Université Catholique de Louvain = Catholic University of Louvain
Authors registered in the RePEc Author Service: Claude d'Aspremont

Post-Print from HAL

Abstract: In a general version of Dixit–Stiglitz two-sector economy, we present three variants of the concept of oligopolistic equilibrium in price-quantity pairs (d'Aspremont and Dos Santos Ferreira, 2016) integrating income feedback effects in three different ways. For the first two variants (Ford effects ignored or restricted to profits), a single and simple equilibrium markup formula is derived involving, for each firm, a conduct parameter indicating its degree of competitive toughness. Different specifications of these conduct parameters lead to different oligopolistic equilibria in prices and/or in quantities. In particular in the standard Dixit–Stiglitz economy, we show, that the first order conditions of a symmetric oligopolistic price equilibrium correspond to a unique degree of competitive toughness in the general markup formula, This degree is decreasing (and the markup increasing) as more feedback effects are taken into account by firms. On the contrary, for the third variant, introducing full Ford effects leads to lower markups and higher competitive toughness in the standard Dixit–Stiglitz economy and under conditions ensuring the equilibrium markup to remain in tne right interval.

Date: 2017
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Published in Research in Economics, 2017, 71 (4), pp.729-739. ⟨10.1016/j.rie.2017.10.007⟩

There are no downloads for this item, see the EconPapers FAQ for hints about obtaining it.

Related works:
Journal Article: The Dixit–Stiglitz economy with a ‘small group’ of firms: A simple and robust equilibrium markup formula (2017)
Working Paper: The Dixit-Stiglitz economy with a ‘small group’ of firms: A simple and robust equilibrium markup formula (2017)
Working Paper: The Dixit-Stiglitz economy with a 'small group' of firms: A simple and robust equilibrium markup formula (2017)
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-02167783

DOI: 10.1016/j.rie.2017.10.007

Access Statistics for this paper

More papers in Post-Print from HAL
Bibliographic data for series maintained by CCSD ().