We study the question of implementing Arrow-Debreu equilibrium allocations in infinite-time economy under uncertainty by sequential trading of infinitely-lived securities. The crucial aspect of implementation is the choice of feasibility constraints on agents' portfolio strategies. The main...

We show that Arrow-Debreu equilibria with countably additive prices in infinite-time economy under uncertainty can be implemented by trading infinitely-lived securities in complete sequential markets under two different portfolio feasibility constraints: Wealth constraint, and essentially...