4.4 UMP Unbiased Testes for Multiparameter Exponential Families
\[\begin{equation}
dP_{\theta, \vartheta}^{X}(x)
:=
C(\theta, \vartheta)
\exp
\left(
\theta
U(X)
+
\sum_{i=1}^{k}
\vartheta
T_{i}(x)
\right)
d \mu(x)
\label{chap04_10}
\end{equation}
.\]