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...

The paper investigates the role played by Friedman’s interpretation of the Brazilian inflation in his 1967 formulation of the natural rate hypothesis and in his 1976 discussion of indexation and other institutional arrangements in the face of chronic inflation. It is argued that, as an...

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...

The origins of "capital fundamentalism' - the notion that physical capital accumulation is the primary determinant of economic growth - have been often ascribed to H arrod's and Domar's proposition that the rate of growth is the product of the saving rate and of the output-capital ratio. I t is...

In the 1960s and 1970s Harrod shifted the emphasis of his research in economic dynamics from the study of business cycles (instability principle) to the investigation of the growth process. As part of that, he restated his concept of the natural growth rate as an optimum welfare rate. The...