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 shows the relation between distributions of social weights and efficient allocations. We show that it is possible to assign to each...

In the framework of general equilibrium theory, this paper considers the existing relationship between the concepts of egalitarianism, efficiency and fairness, in a pure exchange economy with infinitely many goods. We consider the possibility of achieving an efficient egalitarian allocation in a...

The Pareto optimal concept does not concern with fairness or equality, it is a concept related to efficiency. In this paper, using techniques from the general equilibrium theory, we relate efficiency, fairness and stability of an economy.

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...

This paper provides an analysis of solutions to bankruptcy problems from an axiomatic point of view. In particular, we provide characterizations of certain classes of solutions involving the properties of linearity, symmetry and efficiency. Furthermore, we show that there is a unique solution...

General Equilibrium Theory (GE) scrutinizes the ability of markets to achieve efficient allocation of resources. The main purpose of this work is, in the framework to the GE to analyze, the possibility of design a mechanism enabling agents to make independent decisions compatible with social...

This paper surveys the main contributions of Amartya Sen in the fields of social choice theory, income distribution, and measurement of poverty. His empirical studies on famine and his discussion of the fundamental themes of rational choice are also commented on. A recurring theme in Sen's work...

In this work we ask is there a best model for uncertainty decisions? . ¿Which is the status of Simon bounded rationality: an alternative or complentary to traditional VNM theory?. ¿What has been the place of Prospect Theory?. We analize some paradoxes in order to explain some extentions and...

We analize the regulation established by the Banco de México in 2010 to commissions by interbank transactions at ATMs. Under a space model with a duopoly, we endogenize ATM deployment, account fees and ATM fees. We show that the commissions by interbank transactions remain unchanged. The...