
Accession Number : AD0687422
Title : THE APPROXIMATION OF PERFECT COMPETITION BY A LARGE, BUT FINITE, NUMBER OF TRADERS.
Descriptive Note : Research memo.,
Corporate Author : PRINCETON UNIV N J ECONOMETRIC RESEARCH PROGRAM
Personal Author(s) : Cornwall,Richard R.
Report Date : MAR 1969
Pagination or Media Count : 83
Abstract : The paper uses the techniques developed by Debreu and Hildenbrand for representing sequences of economies by sequences of measures on a certain topological space to prove a property similar to upper semicontinuity of the correspondence Epsilon which maps each economy into the set of allocations in the core of that economy. This result is then used to extend Scarf's proof of the nonemptiness of the core of certain finite economies to infinite economies with a finite number of different types of agent. It is also possible to use Scarf's result to prove the existence of a competitive equilibrium for a finite economy. Finally, the upper semicontinuity of Epsilon is used to prove Hildenbrand's result that, loosely speaking, an allocation in the core of an approximately perfectly competitive economy is close to being a competitive allocation. It is shown how the DebreuScarf limit theorem on the core of an economy is a special case of this result. (Author)
Descriptors : (*ECONOMICS, *MEASURE THEORY), APPROXIMATION(MATHEMATICS), SET THEORY, PROBABILITY, TOPOLOGY, THEOREMS
Subject Categories : Economics and Cost Analysis
Operations Research
Distribution Statement : APPROVED FOR PUBLIC RELEASE