Recent versions of pairwise random matching models of money with divisible and perishable goods are amended to allow individuals to hold more than one unit of an indivisible asset. The asset resembles a fiat asset, except that nominal holdings of it yield a small amount of utility. There is a...

I argue that monetary economics should be pursued by applying implementation theory to models which contain explicit frictions that make money essential. The argument has two parts. First, I argue that models in which real balances are assumed to be productive--models with money in utility or...

An earlier analysis of Cavalcanti and Wallace showing that the set of allocations achievable using outside (government) money is a subset of those achievable using inside (private) money is extended. Here, the class of outside-money allocations is enriched by allowing the planner to make...