In his 1903 thesis - “Money and credit instruments in their relation to general prices” - published in 1907, E.W. Kemmerer argued that the market prices of goods cannot be determined by the equations of demand and supply of goods without introducing the “missing” equilibrium equation of...

In this article, I analyze and compare the contributions of Dupuit and Walras on the natural monopoly of railroads. Both theorists argued that inland waterways—as opposed to railroads—could be vertically unbundled, a point which previous authors who compared their views failed to point out....

The paper is a survey of the Aumann's and Schelling's main contributions to game theory. For Aumann, a distinction is made between his works devoted to cooperative and non cooperative games. As for Schelling, pure coordination games and focal points are underlined on one hand, and the collective...

J.S. Mill is generally considered to be the theorist who gave birth to the concept of natural monopoly in its modern sense. Yet, no author has specified that Mill distinguishes two types of monopoly, the “natural monopoly” and the “practical monopoly”. I show that Mill's notion of...

This comment deals with Lipietz's presentation of a solution which had been proposed to the transformation problem. Lipietz's account can be criticized in two respects. First, his attempt to integrate the familiar Morishima-type approach with the newer one is based on a confusion between the...