\documentclass[a4paper, 11pt, notitlepage]{report} \usepackage{amsthm} \theoremstyle{plain} \newtheorem{thm}{Theorem}[section] % reset theorem numbering for each chapter \theoremstyle{definition} \newtheorem{props}[thm]{Proposition} \begin{document} \begin{props} [[1], p. 180] \end{props} \end{document} The result would be:
Proposition 0.0.1 ([1). , p. 180]
How do I make it like this:
Proposition 0.0.1 ([1], p. 180)
I'm using TeXStudio with XeLaTeX.
You could load the mathtools package and use its commands \lbrack and \rbrack -- note that they need to be used in math mode -- to typeset square brackets in a way that doesn't trip up LaTeX. I.e., you'd write
\begin{props}[$\lbrack 1\rbrack]$, p.~180] Addendum: I just noticed the comment posted by @Bernard: An even easier solution is to write
\begin{props}[{[1]}, p.~180] Presumably, though, the [1] element is a call-out to an entry in the bibliography. Have you tried \begin{props}[\cite{whatever}, p.~180], where "whatever" is the citation key of the entry in question? Assuming you're using a numeric citation style, the \cite command will generate the [1] element for you in a way that doesn't interfere with \begin{props}.
\cite, but I have problem with that as well: tex.stackexchange.com/questions/172579/…
begin{props} [[1{]}, p. 180]orbegin{props} [[{1]}, p. 180].[. That is why, semantically, I prefer to write{[1]}rather than[1{]}, though both work.