Utility functions are regarded as elements of a linear space that is paired with a dual representation of choices to demonstrate the similarity between preference revelation and the duality of prices and quantities in revealed preference. With respect to preference revelation, quasilinear versus...

From the perspective of the Walrasian general equilibrium model, entrepreneurial and opportunistic behavior seems foreign. Can the model be refashioned so that it can accommodate such behavior? Many would say no, but we argue the contrary. Indeed, we present a reformulation of the model that...