graph with tikz, math environment in nodes

Question

I'm trying to draw a graph which node text should be in a math environment. For instance consider the following :

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{graphs}

\begin{document}
\begin{tikzpicture}
\graph{
    A0 -> A1;
};
\end{tikzpicture}
\end{document}

I'd the text of A0 and A1 to be \(A^0\) and \(A^1\) (or using $...$ even if it is a bad practise, at this point I don't really care).

Outside graphs, I have no problem to have such nodes, and I read from tikz doc that graph vertices are just regular nodes, but yet, I don't know how to do what I want.

If that is relevant, I'm using lualatex, because I need the \usegdlibrary for the rest of the graph.

Answer 1

look in manual, page 259:

\documentclass[tikz, margin=3mm]{standalone}
\usetikzlibrary{graphs}

\begin{document}
\begin{tikzpicture}
\graph {
A0/$A^0$ -> A1/$A^1$;
};
When you wish to use a node\end{tikzpicture}
\end{document}

or longer version:

\documentclass[tikz, margin=3mm]{standalone}
\usetikzlibrary{graphs}

\begin{document}
\begin{tikzpicture}
\graph {
A0/[as=$A^0$] -> A1/[as=$A^1$];
};
\end{tikzpicture}
\end{document}