Relaxing the concavity assumption to quasi-concavity in the classical programming problem strengthens the Theory of the Consumer but is said to weaken that of the firm. This paper combines the Euler equation and the concept of sub-manifolds to show that there may be stable, multiple or unique...

This paper investigates the testable restrictions on the time-series behavior of equity premia implied by a representative agent model whose state and time-non-separable preferences are subject to taste shocks. The model nests state and time-separable preferences with and without taste shocks as...