In an interaction it is possible that one agent has features it is aware of but the opponent is not. These features (e.g. cost, valuation or fighting ability) are referred to as the agent's type. The paper compares two models of evolution in symmetric situations of this kind. In one model the...

Countertrade agreements in international trade refer to a trade practice in which an exporter agrees to purchase back commodities proportional to his original export sale in the future. This paper provides a rationale for why such an agreement might be efficient. More specifically, the paper...

Analysing various arrangements of intercountry trade, this paper investigates the impact of exchange rate risk on production and expected trade. It addresses the question how a mean-preserving spread of the exchange rate distribution effects strategic aspects of different trading arrangements....

A problem of Parallel Contests is raised and modeled. The equilibria in final situations of parallel contests are analyzed and characterized and the behaviours of contestants with different abilities’ parameters are explained. Given that the values of the prizes in the two contests are...

Three critical cases, involving asymmetric and symmetric cases, in the sequential stages of the n-player repeated auctions are analyzed and compared. These cases might arise in a process of sequential, identical or equivalent auctions, where the auction result may reveal information about the...

The paper compares two models of evolution in symmetric two-player games with incomplete information. One model postulates that the type of a player is fixed, and evolution works within types. In the other model type-contingent strategies evolve. In the case of two types and two strategies it is...