rephrase in a different way, might be more clear

Author: albertobottopoala

Euler/Euler-theory.tex

@@ -328,7 +328,7 @@ \section{Euler equation properties}
 the right eigenvector associated with that wave.  So, for example,
 since $\rb^\evz$ is only non-zero for the density element (see
 Eq.~\ref{eq:euler:primRevs}), this then means that only density jumps
-across the $\lambda^\evz = u$ wave---pressure and velocity are
+across the $\lambda^\evz = u$ wave, while pressure and velocity are
 constant across this wave (see for example, Toro~\cite{toro:1997},
 Ch.\ 2, 3 or LeVeque~\cite{leveque:2002} for a thorough discussion).