i constructed using the picture environment a simple Dynkin diagram of type A_n, which looks like :
o---o---o ... o---o---o
I would like to connect the first and last vertices of this diagrame with a rounded arrow (arrow on both sides), but i'm unable to make bezier arrrows with the picture environment. I would prefer not using Tikz.
Here is a rough code for my diagram :
\documentclass{amsart}
\begin{document}
\begin{picture}(7,2)
\put(0,1){\circle*{5}}
\put(0,1){\line(1,0){20}}
\put(20,1){\circle*{5}}
\put(20,1){\line(1,0){20}}
\put(40,1){\circle*{5}}
\put(53,-1){\mbox{$\cdots$}}
\put(80,1){\circle*{5}}
\put(80,1){\line(1,0){20}}
\put(100,1){\circle*{5}}
\put(100,1){\line(1,0){20}}
\put(120,1){\circle*{5}}
\end{picture}
\end{document}
picture
environment and it's much easier to use...