For economies with one private good and one public good, the author discusses social choice functions satisfying the following requirements: strategy-proofness--representing true preferences is a dominant strategy; symmetry--two agents having the same preference pay equal cost...

Contributions by E. Maskin and S. Williams have established that any social choice cor respondence satisfying monotonicity, no veto power, and having at lea st three participants is Nash implementable under the proviso that th e number of social alternatives is finite and that the correspondence...