Samuelson kept optimization-based problems separated from macroeconomic dynamics in his Foundations, where dynamics were defined in terms of difference and differential equations. Despite some criticism of his "correspondence principle" of stability analysis by D.F. Gordon, D. Patinkin and...

Paul Samuelson's famous 1948 "factor price equalization theorem" was his main contribution to international trade theory. He demonstrated conditions under which trade in goods only would lead to full equalization of the remuneration of productive factors across countries. In practice, general...

In the late 1970s Paul Samuelson drafted the outline of a paper, never published, with a critical assessment of the theoretical innovations of postwar development economics. He found the subject essentially intractable. The present paper discusses how that assessment fits in Samuelson's...

Paul Samuelson was attracted to the economic dynamics of South American countries because of the links between economic performance and political factors. He discussed the influence of “populist democracy” on Argentina's relative stagnation, which, he argued in the 1970s and early 1980s,...

The theory of economic development was an exception to Paul Samuelson's claim of being a "generalist" in economics. It was a hard subject to tackle analytically because of the intrinsic difficulty of some of the concepts involved, such as increasing returns and long-term economic evolution....

On the occasion of the centennial of his mentor Alvin Hansen, Paul Samuelson published in 1988 a modified version of his seminal 1939 multiplier-accelerator model with the specific aim to address aspects of Hansen's secular stagnation hypothesis. The "Keynes-Hansen-Samuelson" model (or KHS, as...