Mathematics – Probability
Scientific paper
2009-02-27
Annals of Applied Probability 2009, Vol. 19, No. 1, 127-157
Mathematics
Probability
Published in at http://dx.doi.org/10.1214/08-AAP534 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Inst
Scientific paper
10.1214/08-AAP534
This paper uses Lie symmetry methods to calculate certain expectations for a large class of It\^{o} diffusions. We show that if the problem has sufficient symmetry, then the problem of computing functionals of the form $E_x(e^{-\lambda X_t-\int_0^tg(X_s) ds})$ can be reduced to evaluating a single integral of known functions. Given a drift $f$ we determine the functions $g$ for which the corresponding functional can be calculated by symmetry. Conversely, given $g$, we can determine precisely those drifts $f$ for which the transition density and the functional may be computed by symmetry. Many examples are presented to illustrate the method.
Craddock Mark
Lennox Kelly A.
No associations
LandOfFree
The calculation of expectations for classes of diffusion processes by Lie symmetry methods does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The calculation of expectations for classes of diffusion processes by Lie symmetry methods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The calculation of expectations for classes of diffusion processes by Lie symmetry methods will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-572243