Aggregation of putty-clay production functions. A methodological study of the distribution approach, applied to the Japanese cotton spinning industry

The aim of this study, formulated in chapter I, has been to reach a better understanding of the concept of an aggregale production function, by answering the following three questions: can such a function be said to exist; can its form be invariant over time; what influence does technical progress, as a function of time alone, represent in the aggregate production function? We concluded that, these questions can be interpreted as demands for greater empirical content of a theory postulating an aggregate production function. Therefore the aim of our study can be seen as an effort to increase the empirical content of such a theory. ... Zie: CONCLUDING REMARKS