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AN INTEGRAL EQUATION FOR THE DISTRIBUTION OF THE FIRST EXIT TIME OF A REFLECTED BROWNIAN MOTION

Published online by Cambridge University Press:  04 December 2009

VICTOR DE-LA-PEÑA*
Affiliation:
Statistics Department, Columbia University, 1255 Amsterdam Ave. Mail Code 4403, New York, NY, USA (email: [email protected])
GERARDO HERNÁNDEZ-DEL-VALLE
Affiliation:
Statistics Department, Columbia University, USA (email: [email protected])
CARLOS G. PACHECO-GONZÁLEZ
Affiliation:
Departamento de Matematicas, CINVESTAV-IPN, A. Postal 14-740, Mexico D.F. 07000, Mexico, USA (email: [email protected])
*
For correspondence; e-mail: [email protected]
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Abstract

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Reflected Brownian motion is used in areas such as physiology, electrochemistry and nuclear magnetic resonance. We study the first-passage-time problem of this process which is relevant in applications; specifically, we find a Volterra integral equation for the distribution of the first time that a reflected Brownian motion reaches a nondecreasing barrier. Additionally, we note how a numerical procedure can be used to solve the integral equation.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 2009

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