1 files changed, 12 insertions, 3 deletions

diff --git a/preamble.tex b/preamble.tex
index 183313b..369abf6 100644
--- a/preamble.tex
+++ b/preamble.tex
@@ -97,23 +97,25 @@ keywordstyle=
   {}% header specification (empty for default)
 \makeatother
 
-\theoremstyle{definition.indented}
+\makeatletter
+\@ifclassloaded{article}{\theoremstyle{definition.indented}}{\theoremstyle{definition}}
 \newtheorem{defn}{\GetTranslation{thm-definition}}
 \newtheorem*{defn*}{\GetTranslation{thm-definition}}
 
-\theoremstyle{plain.indented}
+\@ifclassloaded{article}{\theoremstyle{plain.indented}}{\theoremstyle{plain}}
 \newtheorem{thm}{\GetTranslation{thm-theorem}}
 \newtheorem*{thm*}{\GetTranslation{thm-theorem}}
 \newtheorem{lem}[thm]{\GetTranslation{thm-lemma}}
 \newtheorem*{lem*}{\GetTranslation{thm-lemma}}
 
-\theoremstyle{remark.indented}
+\@ifclassloaded{article}{\theoremstyle{remark.indented}}{\theoremstyle{remark}}
 \newtheorem{rem}{\GetTranslation{thm-remark}}
 \newtheorem*{rem*}{\GetTranslation{thm-remark}}
 \newtheorem{eg}[rem]{\GetTranslation{thm-example}}
 \newtheorem*{eg*}{\GetTranslation{thm-example}}
 \newtheorem*{sketch}{\GetTranslation{thm-proofsketch}}
 \newtheorem*{tshow}{\GetTranslation{thm-show}}
+\makeatother
 
 \newcommand\restr[2]{{% we make the whole thing an ordinary symbol
   \left.\kern-\nulldelimiterspace % automatically resize the bar with \right
@@ -121,3 +123,10 @@ keywordstyle=
   \vphantom{\big|} % pretend it's a little taller at normal size
   \right|_{#2} % this is the delimiter
   }}
+
+\makeatletter
+\@ifclassloaded{article}{
+  \usepackage{abstract}
+  \AtBeginDocument{\setlength{\absparindent}{0em}}
+}{}
+\makeatother