A pairwise trading process is formulated subject to conditions of nonnegativity of traders' holdings and quid pro quo. It is shown that that: (i) There is a centralized procedure that achieves the equilibrium allocation for an arbitrary economy. (ii) It is not in general possible to find a decentralized procedure that achieves the equilibrium allocation for an arbitrary economy. (iii) In a monetary economy there is a decentralized procedure that achieves the equilibrium allocation. The usefulness of money is that it allows decentralization of the trading process.
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Length: 52 pages Date of creation: 1973 Date of revision: Publication status: Published in Econometrica (November 1974), 42(6): 1093-1113 Handle: RePEc:cwl:cwldpp:349
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