Hm. Polemarchakis et P. Siconolfi, GENERIC EXISTENCE OF COMPETITIVE EQUILIBRIA WHEN THE ASSET MARKET IS INCOMPLETE - A SYMMETRICAL ARGUMENT, Economic theory, 6(3), 1995, pp. 495-510
The argument for the generic existence of competitive equilibria when
the asset market is incomplete can be formulated with symmetric treatm
ent of all individuals. The argument extends to a large economy.