1

I am making my slides with beamer but when I put two mathematical modes (??) it fails and I tried everything and I can't find the answer to solve it.

- Objetivo general
    - Al$_2$

this works fine, but when I put the second component

- Objetivo general
    - Al$_2$O$_3$

it colapses and doesn't subscripts

Improve this question
New contributor
Víctor Vargas Marinero is a new contributor to this site. Take care in asking for clarification, commenting, and answering. Check out our Code of Conduct.
5
  • 6
    Welcome to TeX.SX! Please consider providing a full and compilable miminal working example that shows the error and also makes clear your document set up.
    – Jasper Habicht
    Commented Sep 5 at 5:22
  • 4
    It seems that you like to wrote chem expressions. For this exist specialized packages, for example mhchem. Using it you can simple write \ce{AL2} or \ce{Al2O3}.
    – Zarko
    Commented Sep 5 at 5:38
  • 1
    If I guess enough code to compile your fragments, they work without error. Please always include a reproducible test file in your questions.
    – samcarter_is_at_topanswers.xyz
    Commented Sep 5 at 7:41
  • 2
    I couldn't reproduce this error in a minimal beamer document, so it's not a “bug in beamer”.
    – Matthew Leingang
    Commented Sep 5 at 16:28
  • Try $\text{Al}_2\text{O}_3$, but the Chem packages are the way to go
    – Scott Seidman
    Commented Sep 5 at 22:19

2 Answers 2

Reset to default
6

It seems that you like to wrote chem expressions. For this exist specialized packages, for example mhchem. Using it you can simple write your expressions as:

\documentclass{beamer}
\usepackage[version=4]{mhchem}  % <---

\begin{document}
\begin{frame}
\frametitle{Chemistry expressions}
\ce{Al2} or \ce{Al2O3}.
\end{frame}
\end{document}

enter image description here

Improve this answer
3

one subscript

two subscripts

But it isn't clear whether your markup is semantically correct, even though it is TeXnically valid.

\documentclass{beamer}
\begin{document}
\begin{frame}
  \begin{itemize}
    \item Objetivo general
    \item Al$_2$
\end{itemize}
\end{frame}
\begin{frame}
  \begin{itemize}
    \item Objetivo general
    \item Al$_2$O$_3$
  \end{itemize}
\end{frame}
\end{document}
Improve this answer
0

Not the answer you're looking for? Browse other questions tagged .