In this work, we attempt to characterize the main theoretical difficulties to prove the existence of competitive equilibrium in infinite dimensional models. We shall show cases in which it is not possible to prove the existence of equilibrium and some others in which, however the existence of...

Las restricciones impuestas por organismos reguladores al diseño de carteras de administradoras de fondos de retiro, pretenden orientar el comportamiento de las administradoras, no obstante estas restricciones conllevan pérdida de bienestar por parte de los ahorristas. En el presente trabajo...

The aim of this paper is to relate the General Equilibrium Theory and modern Finance Theory. We work with an infinite dimensional economy with a market for goods an actives, and where the number of agents is finite. Each agent has an intertemporal utility function with uncertainty on the states...

In this paper we model tourism development in the framework of multi- population dynamics and analyze the time pattern of its impact as the evolution of the interaction between two populations feeding over the same space-resource. Each population might be structured in two (or more) ?clubs? with...

We consider a pure exchange economy, where agent's consumption spaces are Banach spaces, goods are contingent in time of states of the world, the utility function of each agent is not necessarily a separable function, but increasing, quasiconcave, and twice Frechet differentiable over the...

In this paper we show that in a pure exchange economy it is possible to improve the social welfare along an e±cient path. This path will be called the Negishi map. Moving the relative weights of the agent in a social welfare utility function, we obtain an e±cient path of allocations and social...

In this paper we show the strong relation existing between efficiency and social welfare. We introduce the concept of Negishi path, a differentiable manifold, that show the relation existing between distributions of social weights and efficient allocation. We show that it is possible to as- sign...

In this paper, we consider a society composed of citizens grouped in different economic strata based on income, who must pay taxes, but there are incentives to do so, and a set of public officials (auditors), whose function is to monitor compliance with the tax rules among citizens. We assume...

In this work the evolutionary dynamics of migratory behavior driven by imitation is studied. We show that, any migratory flow, driven by the imitation, can be modeled by a dynamic system, once the rules governing imitative behavior of the population, are established. The parameters...

Since the early nineties in Swedish starts a welfare state transformation process that allows the participation of private operators in sectors emblematic of the welfare state, such as education, health, child care and assistance to adults. To date, experience shows that the coexistence of...