Ökonomische Modelle bieten eine gute Möglichkeit, komplizierte Zusammenhänge zu abstrahieren und diese auf verständlichem Wege zu erklären. Das Cournot-Modell stellt ein sehr einfaches Wettbewerbsmodell innerhalb oligopolistischer Märkte dar. Hierbei ist die Grundidee, dass die Unternehmen...

In this note we consider a simple bilateral oligopoly model of an exchange economy. We characterize the Cournot-Nash equilibrium and we explore the effectiveness of market power. We provide some measures of relative market power. We show it depends on the relative size of the market and on the...

This paper analyses the incentives to adopt cost-reducing technology by firms in a horizontally differentiated industry. In our model there are several suppliers of a new technology. The extent of the cost reduction depends on the quality of the new technology. A firm has to buy the technology...

Recent work has shown that Weitzman's policy rule for choosing price- versus quantity-based pollution control instruments under uncertainty is biased when the polluting firms possess market power (Heuson 2010). However, this study is restricted to emission standards and taxes, while tradable...

In 1999, the International Natural Rubber Agreement (INRA) which had regulated the world’s natural rubber since 1979 collapsed. This paper analyzed the impacts of this international agreement on both the global trade and supply of natural rubber as well as on Indonesia, a major producer...

We develop a model of assignment games with pairwise-identitydependent externalities. A concept of conjectural equilibrium is proposed, and the universal conjecture is shown to be the necessary and sufficient condition for the general existence of equilibrium. We then apply the solution concept...

We estimate the spillovers on firm profitability and market shares in oligopolistic markets through the transition from an n to an n-1 player oligopoly after a merger in the industry. Competitors are identified via the European Commission s market investigations and our methodology allows us to...

In 1999, the International Natural Rubber Agreement (INRA) which had regulated the world’s natural rubber since 1979 collapsed. This paper analyzed the impacts of this international agreement on both the global trade and supply of natural rubber as well as on Indonesia, a major producer of...

In this paper, in an exchange economy with atoms and an atomless part, we analyze the relationship between the set of the Cournot-Nash equilibrium allocations of a strategic market game and the set of the Walras equilibrium allocations of the exchange economy with which it is associated. In an...

For several years, an increasing number of firms are investing in Open Source Software (OSS). While improvements in such a non-excludable public good cannot be appropriated, companies can benefit indirectly in a complementary proprietary segment. We study this incentive for investment in OSS. In...

For several years, an increasing number of firms are investing in Open Source Software (OSS). While improvements in such a non-excludable public good cannot be appropriated, companies can benefit indirectly in a complementary proprietary segment. We study this incentive for investment in OSS. In...

This paper develops a game theory model of a service-oriented Internet in which profit-maximizing service providers provide substitutable (but not identical) services and compete with the quantities of services in a Cournot–Nash manner, whereas the network transport providers, which transport...