\begin{eqnarray*}
\ifnumber         \mathbf{c}_{t  } & = & (\rfree/\Rfree)\mathbf{z}_{t} \label{eq:ct}
\ifnumber \\      \mathbf{c}_{t+1} & = & (\rfree/\Rfree)\bar{\mathbf{z}}_{t+1} = (\rfree/\Rfree)     \mathbf{z} _{t} = \mathbf{c}_{t}
%\ifnumber \\      \mathbf{c}_{t+2} & = & (\rfree/\Rfree)\bar{\mathbf{z}}_{t+2} = (\rfree/\Rfree)     \mathbf{z} _{t} = \mathbf{c}_{t}
\ifnumber \\               \vdots  &  & \vdots \nonumber
\ifnumber \\        \mathbf{c}_{t+n-1} & = & \mathbf{c}_{t}
\label{eq:ctpn}.
\end{eqnarray*}
