italictheorems
How to set up the citation square brackets and numbers in upright in theorems while keeping other stuffs slanted? (This style is suggest by my professor.)
The usual appearance is the following
Theorem. There is no biggest prime number (see [1, Theorem 30 at page 100]).
I would like to achieve
Theorem. There is no biggest prime number (see [1, Theorem 30 at page 100]).
I could manually set \textup to numbers to upright but can not set the square brackets to upright.
You can look at section Theorem Environments in beamer manual and there you will find how to do it.
\documentclass{beamer}
\setbeamertemplate{theorems}[normal font]
\begin{document}
\begin{frame}
\begin{theorem}
This is a theorem
\end{theorem}
\end{frame}
\end{document}
The following conditions on the value of section, inserting it into the theorem numbering as needed:
\documentclass[12pt]{report}
\usepackage{amsthm,amsmath}
\newtheorem{theorem}{Theorem}[section]
\numberwithin{theorem}{section}% Reset theorem counter with every section
\numberwithin{theorem}{chapter}% Reset theorem counter with every chapter
\renewcommand{\thetheorem}{%
\ifnum\value{section}=0
\thechapter% "no section"
\else
\thesection% at least within a section
\fi%
.\arabic{theorem}}
\begin{document}
\chapter{First chapter}
\section{First section}
\begin{theorem}
asdf. See Theorem~\ref{abc} and~\ref{def}.
\end{theorem}
\begin{theorem}\label{abc}
asdf
\end{theorem}
\section{Second section}
\begin{theorem}
asdf
\end{theorem}
\begin{theorem}
asdf
\end{theorem}
\chapter{Second chapter}
\begin{theorem}\label{def}
asdf
\end{theorem}
\end{document}
Note that you have to consider that theorem counters are reset with every \chapter and \section, otherwise you'd have Theorem 2.3 starting off in Chapter 2 in the above example. Also, if you have a theorem inside the "introductory" part of a chapter that eventually will contain a section, then you'll still receive the "reduced" numbering.
Best Answer
\emphappears to be your friend.Code: