updates

tex/handout.cls

@@ -1,6 +1,7 @@
 \ProvidesClass{handout}
 \LoadClass{scrartcl}
 
+\RequirePackage{tex-macros}
 \RequirePackage[T1]{fontenc}
 \RequirePackage{textcomp}
 \RequirePackage{stmaryrd}
@@ -47,18 +48,6 @@
 \RequirePackage[framemethod=TikZ]{mdframed}
 \mdfsetup{skipabove=1em, skipbelow=0em, innertopmargin=5pt, innerbottommargin=6pt}
 
-\newcommand\N{\ensuremath{\mathbb{N}}}
-\newcommand\R{\ensuremath{\mathbb{R}}}
-\newcommand\Z{\ensuremath{\mathbb{Z}}}
-\newcommand\Q{\ensuremath{\mathbb{Q}}}
-\newcommand\C{\ensuremath{\mathbb{C}}}
-
-\let\sidesum\sum%
-\let\sidelim\lim%
-\renewcommand\sum{\sidesum\limits}
-\renewcommand\lim{\sidelim\limits}
-
-
 \theoremstyle{definition}
 \makeatletter
 
@@ -302,13 +291,13 @@
     }
 }
 
-\newcommand{\exercise}[1]{%
-    \def\@exercise{#1}%
-    \subsection*{Exercise #1}
+\newcommand{\exercise}[2][]{%
+    \def\@exercise{#2}%
+    \subsection*{Exercise #2. #1}
 }
 
-\newcommand{\subexercise}[1]{%
-    \subsubsection*{Exercise \@exercise.#1}
+\newcommand{\subexercise}[2][]{%
+    \subsubsection*{Exercise \@exercise.#2. #1}
 }
 
 \newcommand{\sect}[1]{
@@ -342,14 +331,6 @@
     \import{./figures/}{#1.pdf_tex}
 }
 
-
-\DeclareMathOperator{\GL}{GL}
-\DeclareMathOperator{\Imm}{Im}
-\DeclareMathOperator{\Ker}{Ker}
-\DeclareMathOperator{\Aut}{Aut}
-\DeclareMathOperator{\Hom}{Hom}
-\DeclareMathOperator{\Hol}{Hol}
-
 \pagestyle{fancy}
 \fancyhead[L]{\@title}
 \fancyhead[R]{\@section}