[Tex/LaTex] line spacing in the ‘amsart’ document class

Question

In the 'amsart' document class, the 'setspace' package doesn't work. The 'linespread' command, in the preamble, does work, but I don't want the same line spacing throughout my document (i.e. I want certain sections to be single-spaced, some others to be double-spaced, etc.). How can I do this?

Answer 1

I don't have problems with setspace and amsart.

\documentclass{amsart}
\usepackage{setspace,kantlipsum}
\begin{document}
  \singlespacing
  \kant[1]
  \onehalfspacing
  \kant[2]
  \begin{spacing}{2.5}
    \kant[3]
  \end{spacing}
\end{document}