This paper discusses the relation between trade and competition, revising the literature and using indicators, build … domestic competition is explained by concentration indices, such as CR4 and HHI, which show positive correlation with profit …) in the world economy. Our purpose is to extend these discussions and findings to the Brazilian case. Empirical results …

infrastructure in the world air transport system. It is noted that airport infrastructure is a complex dynamic subsystem of global … production infrastructure of the world economy and is aimed at providing competitive air transportation services. It is … of countries in the world economy. In particular, reliable airport infrastructure is one of the key factors in increasing …