Using beamer document class [duplicate]

Question

I'm using \documentclass[11pt]{beamer} with the package Tikzcd but it doesn't work properly with the frames. It gives me the error:

Package pgf Error: Single ampersand used with wrong catcode. \end{frame}

Answer 1

As noted in section 3.4 of the tikz-cd manual, you can use the ampersand replacement key to solve this:

\documentclass[]{beamer}

\usepackage{tikz-cd}

\begin{document}
\begin{frame}{}{}
  \begin{tikzcd}[ampersand replacement=\&]
    A \ar[r]\& B 
  \end{tikzcd}
\end{frame}

\end{document}