A LOGICAL DEFINITION OF FISCAL SUSTAINABILITY

The paper aims to find the logical predicates of sufficiency which could deliver a general definition of the fiscal sustainability. To this end, firstly the concept of optimality (in its relation with the extreme values of a system) is discussed and clarified. Then, these results are applied to the fiscal concept in order to find the concept of fiscal optimality. Finally, the paper discusses the minimal list of the fiscal sustainability sufficient predicates, so to get the logical definition of the fiscal sustainability.