\begin{wrapfigure}[11]{r}{0.35\textwidth}
\psfrag{k}[][]{\textcolor{blue}{$e_k$}}
\psfrag{+}[l][c]{\textcolor{red}{$e_{k+1}$}}
\vspace{-5mm}
\centering\includegraphics[width=4.3cm]{figgeod}
\vspace{-5mm}
\caption{Definition of the lightest geodesic. The edges going closer to~$v'$ are in red.}
\label{figgeod}
\end{wrapfigure}