The aim of this paper is to prove that if the consumption set of an economy with incomplete financial markets is semi-algebraic, then the corresponding pseudo-equilibrium manifold is also semi-algebraic. For this, we proceed by constructing an incomplete financial economy with real assets and...

None of the known macroeconomic theories are adequate to understand what to do in a global crisis like the 2020 Global Pandemic. Rational Expectations and monetarism cannot even ex-plain how is that a global crisis like this happens. The IS-LM model was designed to manage business cycles, but...

These lecture notes are about financial innovations. We ask why are there some innovation and how is an innovative idea realized. This forces us to consider practical and structural aspects (regulations, taxation, markets) as key drivers of innovations and also basic formal aspects in valuation....

Two major trends in the world economy are international migration and environmental degradation. The object of the paper is to analyze the connection between these two trends, which have generally been analyzed in isolation. Here we represent a world economy in which the exploitation of natural...

In this paper, we provide a characterization of interim inefficiency in stochastic economies of overlapping generations under possibly sequentially incomplete markets. With respect to the established body of results in the literature, we remove the hypothesis of two-period horizons, by...

This article has developed a new model of welfare dynamics under imperfect information or imperfect competition by introducing a new concept of ‘inefficient welfare equilibrium’. It assumes that an economy can be split into two virtual parts. For one part the fundamental welfare theorems are...

This article has developed a new model of welfare dynamics under imperfect information or imperfect competition by introducing a new concept of “inefficient equilibrium”. If a country suffers from poverty, then the population of the country can be divided into two groups. For one group the...

We consider an overlapping generations model à la Diamond (1965) with two additional ingredients: altruism and an asset (or land) bringing non-stationary positive dividends (or fruits). We study the global dynamics of capital stocks and asset values as well as the interplay between them. Asset...

In his Inquiry into the Nature and Causes of the Wealth of Nations Adam Smith (1776) considered the phenomenon of division of labor so enormously significant for the creation of a nation’s wealth that he devoted the first three chapters of his book to an investigation of this process. This is...

I study the consumption responses of heterogeneous households following changes in both house prices and interest rates. I show the common assumption that household period utility is separable in housing and consumption can be consistent with the observed co-movement between these two series...