2014 Reprint of 1961 Edition. Full facsimile of the original edition. Not reproduced with Optical Recognition Software. In this work Schwartz presents some mathematical models of the Leontief variety, most of which are intended to elucidate the causes of business cycles. The book consists of three parts: a discussion of the closed Leontief model; a theory of inventory cycles; and a discussion of a modified Walrasian system in the context of the existence of competitive equilibrium. The work is still important for understanding the use of mathematics in the study of economic events.

This title, first published in 1965, provides an analysis of the forces and mechanisms governing the formation of the overall level of money prices. Even though this problem has a long history, and in spite of its obvious practical importance, it remains one of the most poorly understood questions in economic theory. This title will be of interest to students of monetary economics and the history of economic thought.