This introduces the symposium on sunspots and lotteries. Two stochastic general equilibrium concepts, Sunspot Equilibrium (SE) and Lottery Equilibrium (LE), are compared. It is shown that, for some general, pure-exchange economies which allow for consumption non-convexities or moral hazards, the...

We analyze a banking system in which the class of feasible deposit contracts, or mechanisms, is broad. The mechanisms must satisfy a sequential service constraint, but partial or full suspension of convertibility is allowed. Consumers must be willing to deposit, ex ante. We show, by examples,...

Capital gains play an important, positive role in the inter-temporal allocation of resources, but they can also be a source of economic instability. We analyze a simple overlapping-generations economy with two capital goods and irreversible investment. For each vector of initial capital/labor...

Sunspot equilibrium and lottery equilibrium are two stochastic solution concepts for nonstochastic economies. Recent work by Garratt, Keister, Qin, and Shell (in press) and Kehoe, Levine, and Prescott (in press) on nonconvex exchange economies has shown that when the randomizing device is...

We consider a pure-exchange overlapping-generations model We consider a pure-exchange overlapping-generations model with many consumers per generation and many goods per period. As in Ghiglino and Shell (2000), there is a government that collects taxes, distributes transfers and faces budget...

Capital gains play an essential role in the intertemporal allocation of resources, but they can also fuel self-fulfilling bubbles. The simple case of 2 "identical" capitals is analyzed in an OG model. The only trajectory in which expectations are realized at every date is the one in which blue...

We study general equilibrium with nonconvexities. In these economies there exist sunspot equilibria without the usual assumptions needed in convex economies, and they have good welfare properties. Moreover, in these equilibria, agents act as if they have quasi-linear utility. Hence wealth...