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Location and Horizontal Differentiation under Duopoly with Marshallian Externalities

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  • Gaetano Alfredo Minerva

Abstract

A classical differentiated duopoly model is cast in a two regions' framework. An entrant firm, which locates in the other region from the incumbent, comes in and competes with the rival, under markets' segmentation. In the first stage of the game, it has to choose product differentiation. The resulting equilibrium is compared under two different settings: competition in prices (Bertrand) and quantities (Cournot). It is shown that, under both modes of competition, the entrant maximizes product differentiation, producing a completely different good. Afterwards, the Cournot model is extended by assuming that, when firms are located together, they benefit from Marshallian localization economies. First, the minimum cost reduction inducing agglomeration is computed. Second, the implications of a linear spillover function (linking product differentiation to marginal cost reduction) against a quadratic specification, with respect to location and product differentiation, are investigated.

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Bibliographic Info

Paper provided by Dipartimento di Economia e Management (DEM), University of Pisa, Pisa, Italy in its series Discussion Papers with number 2003/10.

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Handle: RePEc:pie:dsedps:2003/10

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Related research

Keywords: Intra-industry trade; product differentiation; location; Marshallian externalities;

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Cited by:
  1. Lorenzo Corsini & Elisabetta Olivieri, 2008. "Technological Change and the Wage Differential between Skilled and Unskilled Workers: Evidence from Italy," Discussion Papers 2008/73, Dipartimento di Economia e Management (DEM), University of Pisa, Pisa, Italy.
  2. Lorenzo Corsini & Pier Mario Pacini & Luca Spataro, 2010. "Workers' Choice on Pension Schemes: an Assessment of the Italian TFR Reform Through Theory and Simulations," Discussion Papers 2010/96, Dipartimento di Economia e Management (DEM), University of Pisa, Pisa, Italy.
  3. Luca Gori, 2009. "Endogenous fertility, family policy and multiple equilibria," Discussion Papers 2009/79, Dipartimento di Economia e Management (DEM), University of Pisa, Pisa, Italy.
  4. Luciano Fanti & Luca Gori, 2009. "Child policy solutions for the unemployment problem," Discussion Papers 2009/76, Dipartimento di Economia e Management (DEM), University of Pisa, Pisa, Italy.
  5. Fanti, Luciano & Gori, Luca, 2010. "On economic growth and minimum wages," MPRA Paper 25842, University Library of Munich, Germany.
  6. Luciano Fanti & Luca Gori, 2009. "Longevity, fertility and PAYG pension systems sustainability," Discussion Papers 2009/77, Dipartimento di Economia e Management (DEM), University of Pisa, Pisa, Italy.

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