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The Laplace Transform of Hitting Times of Integrated Geometric Brownian Motion
Published online by Cambridge University Press: 30 January 2018
Abstract
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In this note we compute the Laplace transform of hitting times, to fixed levels, of integrated geometric Brownian motion. The transform is expressed in terms of the gamma and confluent hypergeometric functions. Using a simple Itô transformation and standard results on hitting times of diffusion processes, the transform is characterized as the solution to a linear second-order ordinary differential equation which, modulo a change of variables, is equivalent to Kummer's equation.
Keywords
MSC classification
Primary:
60J65: Brownian motion
- Type
- Research Article
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- Copyright © Applied Probability Trust 2013
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