This paper is about a model of Bertrand competition in a homogeneous-good market with free entry of identical firms and variable returns to scale. If the optimum number of active firms in the market is two or more, and the number of active firms is equal to that optimum number, then Bertrand...

In this paper, we study the relationship between reconciliations in the Colombian electricity market and the bid prices by firms on the spot market. In this work,we propose a model of behavior of the firm to elaborate theoretical predictions about the relationship between the reconciliations and...

This paper calculates the efficiency of senior residences in Saragossa and province by means of the Data Envelopment Analysis (DEA). The study of the efficiency has been divided in two stages: in the first one the efficiency of the productive system of senior residences is calculated and...

We analyze the credit channel effects on new residential property prices in Medellín, Colombia, using a simultaneous equations model. Our empirical results show that the main determinants of new residential properties prices are mortgage interest rates and the availability of government...

One of the most important economic strategic sectors in any economy is the electricity market. Its main feature is its oligopolistic character favoured by the returns to scale which act as an entry barrier. As a result, the energy generators can use their power market in order to increase their...

We study cartel stability in a differentiated price-setting duopoly with returns to scale. We show that a cartel may be equally stable in the presence of lower differentiation, provided that the decreasing returns parameter is high. In addition we demonstrate that for a given factor of discount,...

In this article we develop a microeconomic framework to study the relationships among privatization, competition for deposits and performance in banking. Particularly, we analyze banking privatization when competitive strategies of the Cournot and Stackelberg types are allowed. Our findings show...

La red productiva representa un mecanismo económico clave para comprender cómo los choques microeconómicos se propagan en el sistema económico. En esta línea se han desarrollo diversos trabajos teóricos bajo el supuesto de libre competencia, sin considerar el poder de mercado ni la posible...

Taking as a reference a simple oligopoly model with differentiated products, in which there are three firms, the purpose of this paper is to complement the existing literature on mergers by proving that the traditional merger paradox can be avoided by assuming that, after the merger, the merging...

Taking as a reference a model in which there are a public firm, a national private firm and a foreign private one, it is analyzed both mergers sustainability and their relative effects on welfare. It is proved that the merger between the public firm and either the national or the international...