changed \ne to \neq hoping that this will pass the to_html parser

Packages/Apollonius_graph_2/doc_tex/Apollonius_graph_2/Apollonius_2.tex

@@ -67,7 +67,7 @@ the weight of $P_i$. It is a subdivision of the plane into connected
 regions, called {\em cells}, associated with the weighted points (see
 Fig. \ref{fig-apollonius}(left)). The cell of a 
 weighted point $P_i$ is the locus of points on the plane that are
-closer to $P_i$ than any other weighted point $P_j$, $j\ne i$.
+closer to $P_i$ than any other weighted point $P_j$, $j\neq i$.
 The distance $\delta(x, P_i)$ of a point $x$ in the plane to a
 circle $P_i$ is defined as: 
 \[      \delta(x,P_i)=\|x-c_i\|-w_i,\]

Packages/Apollonius_graph_2/doc_tex/basic/Apollonius_graph_2/Apollonius_2.tex

@@ -67,7 +67,7 @@ the weight of $P_i$. It is a subdivision of the plane into connected
 regions, called {\em cells}, associated with the weighted points (see
 Fig. \ref{fig-apollonius}(left)). The cell of a 
 weighted point $P_i$ is the locus of points on the plane that are
-closer to $P_i$ than any other weighted point $P_j$, $j\ne i$.
+closer to $P_i$ than any other weighted point $P_j$, $j\neq i$.
 The distance $\delta(x, P_i)$ of a point $x$ in the plane to a
 circle $P_i$ is defined as: 
 \[      \delta(x,P_i)=\|x-c_i\|-w_i,\]