Under the risk neutral measure, S t follows the Geometric Brownian process where Let B(t,T) be the

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Under the risk neutral measure, St follows the Geometric Brownian process where

d St St = ridt+odZ.

Let B(t,T) be the time-t value of the T-maturity discount bond. Under the forward measure QT where B(t,T) is used as the numeraire, show that

ST or [7] = E'QT B(t,t*) B(t,T)' St St B(t,T)* tt* t> t*.Give a financial interpretation of the above result. 

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