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## export to babel, sometimes a block environment is inserted.

**From**: |
Uwe Brauer |

**Subject**: |
export to babel, sometimes a block environment is inserted. |

**Date**: |
Thu, 15 Oct 2020 19:44:06 +0200 |

**User-agent**: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |

Hello
I have a org file that I want to export either to
1. Regular latex or
2. To beamer.
So I just use the corresponding export engines.
However the following minimal example puzzles me:
#+begin_src
# -*- org-confirm-babel-evaluate: nil -*-
#+LATEX_HEADER_EXTRA: \usepackage{booktabs}
* The algorithm applied to the Lane-Emden equation
:PROPERTIES:
:BEAMER_env: frame
:BEAMER_opt: allowframebreaks
:END:
** The original Lane-Emden equation
#+begin_src latex :results latex replace :exports results :eval t
\begin{equation*}
\begin{cases}
y''(x)+\frac{2}{x}y'(x)+y^{n} &=0\\
y(0) &= 1\\
y'(0) &=0
\end{cases}
\end{equation*}
where $n\in[0,5]$ is the polytropic index.
#+end_src
#+end_src
Because it exports to
#+begin_src
\begin{frame}[allowframebreaks]{The SLM algorithm applied to the Lane-Emden
equation}
\begin{block}{The original Lane-Emden equation}
\begin{equation*}
y''(x)+\frac{2}{x}y'(x)+y^{n} &=0\\
y(0) &= 1\\
y'(0) &=0
\end{equation*}
where $n\in[0,5]$ is the polytropic index.
\end{block}
\end{frame}
#+end_src
How can I avoid this annoying block environment?
Regards
Uwe Brauer

**export to babel, sometimes a block environment is inserted.**,
*Uwe Brauer* **<=**