There is a considerable tension in neo-Keynesian macroeconomics as to whether the familiar IS-LM analysis should be interpreted as a description of equilibrium or disequilibrium. The present paper shows how the IS-LM model can be used for either purpose. The first section provides the...

A sufficient condition is given such that first-order autoregressive processes are strong mixing. The condition is specified in terms of the univariate distribution of the independent identically distributed innovation random variables. Normal, exponential, uniform, Cauchy, and many other...

Cooperation in repeated games relies on the possibility that equilibrium play following some t-period history depends on more than simply the structure of the game remaining after the first t periods, that structure being always the same. In a nondegenerate theory of renegotiation, what a player...

One of the main findings of the principal-agent literature has been that incentive schemes should be sensitive to all information that bears on the agent's actions. As a manifestation of this principle, incentive schemes tend to take quite complex (non-linear) forms. In contrast, real world...