The paper introduces an abstract economy with imperfect competition; the choice of allocation takes place through an abstract mechanism, when produceres choose strategies and the outcome is (a set of) feasible allocations, where the consumers' choices are sustained by the market mechanism at...

In the present paper general stationary overlapping generations economies with many commodities in every period and many different consumers in every generation are considered. A government maximizes an utilitarian social welfare function, that is the sum of weighted averages of utilities for...