The second welfare theorem and the core-equivalence theorem have been proved to be fundamental tools for obtaining equilibrium existence theorems, especially in an infinite dimensional setting. For well-behaved exchange economies that we call proper economies, this paper gives (minimal)...

The paper studies the two period incomplete markets model where assets are claims on state contingent commodity bundles and there are no bounds on portfolio trading. The important results on the existence of equilibrium in this model assume that there is a infnite number of commodities traded in...

This paper studies production economies having a locally convex topological vector commodity space ordered by a closed and generating convex come such that the order intervals are topologically bounded. The generally assumed lattice properties on the commodity-price duality are replaced by an...

It is well known from the work of S. Ross that a securities market is complete if and only if each call option can be replicated using available securities. The present short note announces the following surprising complementary result to Ross' important contribution. . If the number of...

Models of monetary economies with explicit micro-foundations play a central role in macroeconomics. A common assumption is the quasi-linearity of individuals' preferences. Moreover, anonymity rules out credit and implies that individuals are constrained in their ability to save and borrow. These...

This thesis includes three essays analyzing the role of government interventions in anchoring inflation in an extremely open small economy, Taiwan, whose monetary authority has been frequently using large-size interventions since the 1985 Plaza Agreement. Taiwan's relative success in controlling...

The purpose of this thesis, as implied by its title, is essentially two-fold. The first goal is to introduce and study the notion of properness, as well as some other concepts related to it. The importance of this property lies in the fact that in the infinite-dimensional case it effectively...

This dissertation provides theoretical underpinnings for exogenous matching frameworks. The ultimate goal is to improve our understanding of economies whose functioning is impaired by frictions of spatial, informational or institutional nature. Indeed, there is a well established research...