beamertheorems
I want to typeset my theorems within my presentation in upright fonts. The only way I know is by doing this:
\begin{theorem}
\textup{Upright Theorem}
\end{theorem}
When I use article document class, I can use the theorem package and type \theorembodyfont{\upshape} within the preamble. However, such thing did not work for Beamer. I would like to do the similar thing when I use beamer (defined the upright-ness within the preamble). Is it possible?
You need to make a "dummy" theorem and make all the others subordinate to that. For example:
\documentclass{article}
\usepackage{amsthm,amsmath}
% \newtheorem{dummy}{Dummy}[section]
\newcounter{dummy} \numberwithin{dummy}{section}
\newtheorem{thm}[dummy]{Theorem}
\newtheorem{defn}[dummy]{Definition}
\begin{document}
\section{First}
\begin{thm}
\end{thm}
\begin{defn}
\end{defn}
\section{Second}
\begin{thm}
\end{thm}
\begin{defn}
\end{defn}
\end{document}
Either the commented \newtheorem line or the \newcounter line works; the \numberwithin command is defined by amsmath, but if you are using amsthm you are probably using that too. If not, then the \newtheorem line works just with amsthm.
beamer uses translator to translate environment names and some other words. It uses
some .dict files which you can translate to your language and start to use. Look at manual's section Translating strings. Here you have a little example.
\documentclass{beamer}
\uselanguage{spanish}
\languagepath{spanish}
\deftranslation[to=spanish]{Theorem}{Teorema}
\deftranslation[to=spanish]{theorem}{teorema}
\begin{document}
\begin{frame}
\begin{theorem}
I will translate \structure{\translate[to=spanish]{theorem}} but not theorem
\end{theorem}
\end{frame}
\end{document}
Another option would be to use \begin{block}{Korolari} ... \end{block}.
Update: A better and more detailed explanation can be found in Beamer newtheorem translation
Best Answer
You can look at section
Theorem Environmentsin beamer manual and there you will find how to do it.