exercise env

xenotes.sty

@@ -26,12 +26,14 @@
 \setCJKsansfont{Source Han Serif SC}
 \setCJKmonofont{Source Han Serif SC}
 \RequirePackage[charter]{mathdesign} % math font only for serif mode
+\RequirePackage{amsmath}
+\RequirePackage{eucal}
+\RequirePackage{microtype}
 \fi
 
 % \setCJKmainfont{SourceHanSerifSC-Regular.otf}[BoldFont={SourceHanSerifSC-Bold.otf}, ItalicFont=SourceHanSerifSC-Regular.otf]
 
 \RequirePackage[margin=1in]{geometry}
-\RequirePackage{amsmath}
 \RequirePackage[dvipsnames]{xcolor}
 
 \RequirePackage[colorlinks=true,urlcolor=Blue,citecolor=Green,linkcolor=BrickRed,unicode]{hyperref}
@@ -43,8 +45,6 @@
 
 
 \RequirePackage{graphicx} % essentials
-% \RequirePackage{microtype}
-\RequirePackage{eucal}
 \RequirePackage[nocompress]{cite}       % other convenient stuff
 \RequirePackage{enumerate}
 %\usepackage{pgf,tikz}
@@ -57,18 +57,21 @@
 \newaliascnt{corollary}{theorem}
 \newaliascnt{conjecture}{theorem}
 \newaliascnt{proposition}{theorem}
+\newaliascnt{exercise}{theorem}
 
 \newtheorem{lemma}{Lemma}[section]
 \newtheorem{corollary}{Corollary}[section]
 \newtheorem{conjecture}{Conjecture}[section]
 \newtheorem{proposition}{Proposition}[section]
 \newtheorem{problem}{Problem}
+\newtheorem{exercise}{Ex}[section]
 
 \newcommand{\lemmaautorefname}{Lemma}
 \newcommand{\corollaryautorefname}{Corollary}
 \newcommand{\conjectureautorefname}{Conjecture}
 \newcommand{\propositionautorefname}{Proposition}
 \newcommand{\problemautorefname}{Problem}
+\newcommand{\exerciseautorefname}{Exercise}
 
 \newenvironment{definition}[1][Definition]{\begin{trivlist}
 \item[\hskip \labelsep {\bfseries #1}]}{\end{trivlist}}