un grafico per AmsMath
un primo grafico di prova
`
\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows,positioning}
\begin{document}
\begin{tikzpicture}
\tikzset{main node/.style={rectangle, draw,
text centered, rounded corners}, }
\tikzset{main verb/.style={minimum size=1cm}, }
\tikzset{linea/.style={-triangle 90}, }
\node[main node] (1) {AMSXTRA};
\node[main node] (2)
{AMSMATH};
\node[main node] (5)
{AMSBSY};
\node[main node] (6) [below =of 5] {AMSOPN};
\node[main node] (4) [above =of 5] {AMSTEXT};
\node[main node] (3) [below =of 6] {AMSCD};
\node[main node] (7)
{AMSGEN};
\foreach \x /\y in{1/2,2/4,2/5,2/6,4/7,5/7,6/7,3/7}
\path[linea] (\x) edge node {} (\y);
%%
\end{tikzpicture}
\end{document}
`