From b3d038fc3e0c1b12f7b833bda4d2434e113abeec Mon Sep 17 00:00:00 2001
From: EthanDeng <ddswhu@outlook.com>
Date: Sun, 4 Aug 2019 19:48:18 +0800
Subject: [PATCH] revert back to cmlargesymbols

---
 elegantbook-cn.tex |  3 ++-
 elegantbook.cls    | 18 ++++++++++++------
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/elegantbook-cn.tex b/elegantbook-cn.tex
index 9c7c465..083cfb3 100644
--- a/elegantbook-cn.tex
+++ b/elegantbook-cn.tex
@@ -1,4 +1,4 @@
-\documentclass[cn,11pt,twocol]{elegantbook}
+\documentclass[cn,11pt]{elegantbook}
 
 \title{ElegantBook：优美的 \LaTeX{} 书籍模板}
 \subtitle{Elegant\LaTeX{} 经典之作}
@@ -457,6 +457,7 @@ Lebesgue 积分有几种不同的定义方式。我们将采用逐步定义非
 \begin{itemize}
 \item 名词解释
 \begin{definition}{可积性}{int}
+$\vv{AB}$
 设 $ f(x)=\sum\limits_{i=1}^{k} a_i \chi_{A_i}(x)\oint_{a}^b\ointop_{a}^b\prod_{i=1}^n$ 是 $E$ 上的非负简单函数，其中 $\{A_1,A_2,\ldots,A_k\}$ 是 $E$ 上的一个可测分割，$a_1,a_2,\ldots,a_k$ 是非负实数。定义 $f$ 在 $E$ 上的积分为 $\int_{a}^b f(x)$
 \begin{equation}
    \label{inter}
diff --git a/elegantbook.cls b/elegantbook.cls
index 3001699..56a8ed7 100644
--- a/elegantbook.cls
+++ b/elegantbook.cls
@@ -99,11 +99,17 @@
 \RequirePackage{anyfontsize}
 \ifdefstring{\ELEGANT@math}{newtxmath}{
 \RequirePackage{newtxmath}
+\let\oldwidering\widering
+\let\widering\undefined
+\RequirePackage{yhmath}
+\let\widering\oldwidering
+\RequirePackage{esvect}
+\DeclareSymbolFont{CMlargesymbols}{OMX}{cmex}{m}{n}
 \let\intop\relax\let\sumop\relax\let\ointop\relax\let\prodop\relax
-\DeclareMathSymbol{\sumop}{\mathop}{largesymbols}{"50}
-\DeclareMathSymbol{\intop}{\mathop}{largesymbols}{"52}
-\DeclareMathSymbol{\ointop}{\mathop}{largesymbols}{"48}
-\DeclareMathSymbol{\prodop}{\mathop}{largesymbols}{"51}
+\DeclareMathSymbol{\sumop}{\mathop}{CMlargesymbols}{"50}
+\DeclareMathSymbol{\intop}{\mathop}{CMlargesymbols}{"52}
+\DeclareMathSymbol{\ointop}{\mathop}{CMlargesymbols}{"48}
+\DeclareMathSymbol{\prodop}{\mathop}{CMlargesymbols}{"51}
 }{\relax}
 
 % ----- Handle Colors -----
@@ -235,7 +241,7 @@
 %\RequirePackage{enumerate}
 \RequirePackage{amsmath,mathrsfs,amsfonts,amssymb}
 \RequirePackage{booktabs}
-\RequirePackage{multicol}
+\RequirePackage{multicol,multirow}
 \RequirePackage{xcolor}
 \RequirePackage{fancyvrb}
 \RequirePackage{makecell,lipsum,hologo,setspace}
@@ -628,7 +634,7 @@
 \fancyhead[L]{\color{structurecolor}\ifdefstring{\ELEGANT@lang}{en}{\itshape}{\kaishu}\rightmark}
 \fi
 
-\fancyfoot[c]{\base{structurecolor}{88}}
+\fancyfoot[c]{\catcode`\$=3\relax\base{structurecolor}{88}}
 \renewcommand{\headrule}{\color{structurecolor}\hrule width\textwidth}
 \pagestyle{fancy}
 \renewcommand{\headrulewidth}{1pt}