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water
Posted: Wed Feb 13, 2008 5:17 am
Guest
f is continuous function.
ProductIntegral_0^t [1 - f(u)du] = exp[- Integral_0^t f(u)du].
why?

Thanks in advance!
Herman Rubin
Posted: Wed Feb 13, 2008 1:06 pm
Guest
In article <d3e10a83-9049-48ac-8d2f-985c0135f856@i7g2000prf.googlegroups.com>,
water <waterloo2005@gmail.com> wrote:
Quote:
f is continuous function.
ProductIntegral_0^t [1 - f(u)du] = exp[- Integral_0^t f(u)du].
why?

Use the definition of product integral, and show that the
ratio of the approximations for the same means of subdividing
the interval approaches 1 for all sufficiently fine partitions.


--
This address is for information only. I do not claim that these views
are those of the Statistics Department or of Purdue University.
Herman Rubin, Department of Statistics, Purdue University
hrubin@stat.purdue.edu Phone: (765)494-6054 FAX: (765)494-0558
water
Posted: Wed Feb 13, 2008 8:53 pm
Guest
Quote:
and show that the
ratio of the approximations for the same means of subdividing
the interval approaches 1 for all sufficiently fine partitions.

can you say more details?

thanks
 
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