In this paper we provide necessary and sufficient conditions for the excess demand function of a pure exchange economy to be globally invertible so that there is a unique equilibrium. Indeed, we show that an excess demand function is globally invertible if and only if its Jacobian never vanishes...

Social Accounting Matrixes are built from the four regions of the country (north, north center, center and south). In addition, it is also presented the model of accounting multipliers to identify structural differences of the regions, and the analyses of redistributive effects (sectoral...