We present some theoretical frameworks used in macroeconomics, mainly economic growth. Our goal is not to provide a unified model but rather to present simplified versions of models in the classic academic articles to help students familiarize with theoretical models used in macroeconomics and...

We show that both real indeterminacy and asset price bubble may appear in an infinite-horizon exchange economy with infinitely lived agents and an imperfect financial market. We clarify how the asset structure and heterogeneity (in terms of preferences and endowments) affect the existence and...

In a simple infinite-horizon exchange economy with a single consumption good and a financial asset, real indeterminacy and asset price bubble may arise. We show how heterogeneity (in terms of preferences, endowments) and short-sale constraints affect the emergence and the dynamics of asset price...

The paper introduces dividend taxation and productive government spending in an infinite-horizon general equilibrium model with heterogeneous agents and financial market imperfections. We point out that imposing a dividend tax and using the revenue from this tax to finance productive government...

Demichelis and Polemarchalis (2007) highlighted the role played by the frequency of trade on the degree of indeterminacy of equilibrium in economies of overlapping generations. Assuming that time has a finite starting point and extends into the infinite future, they prove that the degree of...

In the financial accounts as collected by the U.S. Federal Reserve, one Balance Sheet item stands out: “The Household Balance Sheet over the period 2000-2020”. In Q4 2005, the market value of households’ real estate assets was $14.416 trillion. By Q4 2011 the market value had dropped to...

In a recent paper: “U.S. households’ balance sheet and the link to economic policies” (MPRA Paper 104369), it was illustrated that the Great Recession of 2008 and beyond caused a loss in home equity of $6.1 trillion between Q4 2005 and Q4 2011. It took households until Q2 2016 before the...