Consider an economy in which various types of labor are used to produce consumption, but not all types of labor are useful for upgrading the stock of organization capital — that is, for replacing old projects with more productive new projects. When news induces consumers to want to save more,...

Representing binary ordering relations by numerical functions is a basic problem of the theory of measurement. We obtain definable utility representations for (both continuous and upper semicontinuous) definable preferences in o-minimal expansions of real closed ordered fields. Such preferences...

We propose a model of a random normal game for given (finite nonempty) sets of players and pure strategies; this model is shown to be canonical in a certain sense.