I have the following code:

```
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{matrix,arrows}
\begin{document}
\[
\begin{tikzpicture}
\matrix (m) [matrix of math nodes,row sep=3em,column sep=1em,minimum width=2em]{
A & & G \\
& S & \\
};
\path[-stealth]
(m-1-1) edge node [above] {$f$} (m-1-3)
(m-1-1) edge [bend right] node [left] {$p\;$} (m-2-2)
(m-1-3) edge node [right] {$\;q$} (m-2-2)
(m-2-2) edge node [right] {$\epsilon$} (m-1-1);
\path[-stealth]
([yshift=5pt]m-1-1) edge node [right] {$g$} ([yshift=5pt]m-1-3);
\end{tikzpicture}
\]
\end{document}
```

I dare you to compile it. Then you will get a disgusting output. What I want is to get the two arrow on top one over the other (just like corolary 1.3.1.5, page 70, in the notes on http://math.umn.edu/~kwlan/articles/cpt-PEL-type-thesis-revision.pdf).

Can anyone help? I would love if the solution didn't modify too much the way I coded the diagram since it is the way I always do it (with the matrix) but beggers can't be choosers, so.

## Best Answer

Here is an attempt to fix it by using the

`.east`

and`.west`

anchors:## Notes:

## Code: