For a linear program it is shown that the optimal policy set behaves continuously if the constraint vector changes on the set for which the program has a solution. The result implies that there exists a continuous optimal policy function for which a construction is indicated.

The dynamic behavior of a simple macroeconomic disequilibrium model is analyzed in which consumers' changes in money holdings constitute the dynamic link between any two periods. It is shown that, under constant government consumption, a constant production function (no investment), and fixed...

This note reports and reemphasizes the importance of a balancedness condition for production sets which—if combined with otherwise standard assumptions—guarantees the non-emptiness of the core. Balancedness neither requires nor implies any property related to returns to input scale. It is...

It is shown why different price normalization rules influence oligopolistic equilibria in general equilibrium models. This is done for the Roberts and Sonnenschein duopoly and for a price duopoly in an exchange economy. Journal of Economic Literature Classification Numbers: D43, D51.