I would like to ask the following question.
How can I define the center of a node in Tikz?
In the following example, I would like to define the respective bullets to be the respective centers (such that it aligns graphically). Is there an easy way to do that? I would like to avoid defining $3$ or $4$ instead of one.
At the moment, they are not aligned and it looks like this:
%& /home/bernhard/.config/TikzEdtWForms/TikzEdtWForms/0.2.1.0/temp_header
\begin{document}
\usetikzlibrary{patterns,shapes,decorations.pathmorphing,decorations.pathreplacing,calc,arrows}
\usetikzlibrary{arrows}
\begin{tikzpicture}
\node (v2) at (-2,20) {$uvw=\bullet^{2}=xyz$};
\node (v6) at (2,20) {$\bullet^{6}$};
\node (v7) at (0,24) {$abc=\bullet^7=defgh$};
\draw [-open triangle 45] (v2) edge node[above] {} (v7);
\draw [-open triangle 45] (v7) edge node[above] {} (v6);
\draw [-open triangle 45] (v2) edge node[above] {} (v6);
\end{tikzpicture}
\end{document}
This yields the following picture.
I would like to make the bullets of the respective vertices $2$, $6$ and $7$ being the centers of the / aligned with the red crosses (which are not part of the code, but drawn nevertheless).
Thank you very much for the help.