Empirical studies of the aggregate labor market matching function have favored a Cobb-Douglas functional form, for which there are no microfoundations in the existing literature. I present a new model ...

This paper discusses recent work on the existence of aggregate production functions in models in which capital goods are specific to firms and cannot be used interchangeably. It is found that this ...

So I am trying to write an update statement that uses two factors to determine the new value of the field, one of the factors is an aggregate function (COUNT). I get the error: An aggregate may not ...