&&P^{(\mu)}[T\leq t]\quad (0\leq t<\infty)\\
&=&E[1_{\{T\leq t\}}Z_t] \\
&=&E[1_{\{T\leq t\}}E[Z_t|\mathcal{F}_{t\wedge T}]]\\
&=&E[1_{\{T\leq t\}}Z_{t\wedge T}]\\
&=&E[1_{\{T\leq t\}}Z_T]
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