We derive a new transversality condition (which we prove to be necessary) for a class of infinite horizon optimal control problems.

We construct a two-sector endogenous growth model in which productive government spending is essential for sustaining an economy's long-run growth. It is shown that, like the original one-sector [Barro, R.J., 1990. Government spending in a simple model of endogenous growth. Journal of Political...

This paper derives sufficient conditions under which the Law of Comparative Advantage and the General Law of Comparative Advantage are true when the preferences of the trading countries may not be represented by "well-behaved" social utility functions. It shows that in the neoclassical framework...

Much of the comparative statics of trade theory rests on the unrealistic assumption that in each trading country all households are alike or behave collectively as though they are alike. In the present paper the authors show that two well-known comparative statical propositions are highly...

The paper develops a model of international trade with increasing returns to scale by taking into account the possibility of cooperation among agents in an egalitarian economy. It is shown that each country gains from trade in a trading world in which there are arbitrary numbers of...