minor tex fix

tex-stuff/math.tex

@@ -7,7 +7,7 @@
 \subsection{Zero Knowledge Proofs}
 \subsubsection{Proof 1: Knowledge of an ECDL}
 
-Alice and Bob know $v$ and $g$ with $q = |g|$, but only Alice knows $x$, so that
+Alice and Bob know $v$, $g$ and $q = |g|$, but only Alice knows $x$, so that
 $v = xg$.
 
 \begin{enumerate}