How far can we go in weakening the assumptions of the general equilibrium model? Existence of equilibrium, structural stability and finiteness of equilibria of regular economies, genericity of regular economies and an index formula for the equilibria of regular economies have been known not to...

In the present paper, the existence of maximal elements for binary relations are studied. Generalized lexicographic relations are introduced, and some results on existence of maximal elements are provided. A simple example shows that economies with "lexicographic consumers" need not have...

A commodity is shared between some individuals; some selection procedure is used to choose allocations. In order to reflect that laws and rules than allocations are implemented and that they involve an element of randomness because of incomplete information, selection procedures are taken to be...