We model a general choice environment via probabilistic choice correspondences, with (possibly)incomplete domain and infinite universal set of alternatives. We offer a consistency restrictionregarding choice when the feasible set contracts. This condition, ‘contraction consistency’,...

We unify and expand the theory of consumer’s behavior, based on Samuelson’s Weak Axiomof Revealed Preference, to permit simultaneously both random choice and non-singletonchoice sets. We provide a consistency postulate for demand behavior when such behavior isrepresented in terms of a...

We propose a simple and powerful method for determining the transition processin continuous-time DSGE models under Poisson uncertainty numerically. The idea isto transform the system of stochastic dierential equations into a system of functionaldierential equations of the retarded type. We then...

In this paper, we experimentally test the Modigliani-Miller theorem. Applying ageneral equilibrium approach and not allowing for arbitrage among ¯rms with differ-ent capital structure, we are able to address a question fundamental to the valuationof firms: does capital structure affect the...