Uniform Measures On Inverse Limit Spaces

David Stockman

No 08-25, Working Papers from University of Delaware, Department of Economics

Abstract: Motivated by problems from dynamic economic models, we consider the problem of defining a uniform measure on inverse limit spaces. Let f be a function from a compact metric space X into itself where f is continuous, onto and piecewise one-to-one. Let Y be the inverse limit of (X,f). Then starting with a measure m1 on the Borel sets of X, we recursively construct a sequence of probability measures (m1,m2,...) on the Borel sets of X satisfying mn(A)=mn+1[B] for each Borel set A and n=1,2,... and B is the preimage of A under f. This sequence of probability measures is then uniquely extended to a probability measure on the inverse limit space Y. If m1 is a uniform measure, we argue that the measure induced on the inverse limit space by the recursively constructed sequence of measures is a uniform measure. As such, the measure has uses in economic theory for policy evaluation and in dynamical systems in providing an ambient measure (when Lebesgue measure is not available) with which to define an SRB measure or a metric attractor for the shift map on the inverse limit space.

Keywords: Inverse Limits; probability measure; multiple equilibria; global indeterminancy (search for similar items in EconPapers)
JEL-codes: C61 (search for similar items in EconPapers)
Pages: 10 pages
Date: 2008
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Forthcoming in Applicable Analysis

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