On an Integral Equation for the Free Boundary of Stochastic, Irreversible Investment Problems
AbstractIn this paper we derive a new handy integral equation for the free boundary of in nite time horizon, continuous time, stochastic, irreversible investment problems with un- certainty modeled as a one-dimensional, regular difusion X0;x. The new integral equation allows to explicitly find the free boundary b() in some so far unsolved cases, as when X^(0;x) is a three-dimensional Bessel process or a CEV process. Our result follows from purely probabilistic arguments. Indeed, we frst show that b(X_0;x(t)) = l^*(t), with l^*(t) unique optional solution of a representation problem in the spirit of Bank-El Karoui ; then, thanks to such identification and the fact that l^* uniquely solves a backward stochastic equation, we nd the integral problem for the free boundary.
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Bibliographic InfoPaper provided by Bielefeld University, Center for Mathematical Economics in its series Working Papers with number 471.
Length: 20 pages
Date of creation: Nov 2012
Date of revision:
This paper has been announced in the following NEP Reports:
- NEP-ALL-2013-01-26 (All new papers)
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