\widetilde 错误

\widetilde 错误

因此,我一直\widetilde在我的一篇论文中使用这种符号,而且效果非常好,但最近我不得不改变我在论文中使用的格式,大多数标签仍然可以正常工作,但出于某种原因,宽波浪号不仅会在我的变量名上放置一个波浪号,还会复制我在外面括号内放置的内容。

因此,如果我使用\widetilde{x},我会在文档中得到一个没有波浪号的 x,后面跟着一个带有波浪号的 x。

有什么办法可以解决这个问题吗?

为了记录,我正在使用以下软件包:

\documentclass[12pt, a4paper, oneside]{book}
\usepackage{listings}
\usepackage{float}
\usepackage{graphicx}
\usepackage{color,soul}
\usepackage[overlay,absolute]{textpos}
\usepackage{tikz}
\usepackage{amsmath}
\usepackage{relsize}
\usepackage{breqn}
\usepackage{ragged2e}
\setlength{\TPHorizModule}{1cm}
\setlength{\TPVertModule}{1cm}



\usepackage{bm,amsmath,amssymb,color,subfigure}
\usepackage{fancyhdr, ifpdf}
\pagestyle{fancyplain}

%\renewcommand{\baselinestretch}{1.7}

%% some redefination of the headers and footers
\renewcommand{\chaptermark}[1]%
             {\markboth{#1}{}}
\renewcommand{\sectionmark}[1]%
             {\markright{\thesection\ #1}}
\lhead[\fancyplain{}{\thepage}]%
      {\fancyplain{}{\rightmark}}
\rhead[\fancyplain{}{\leftmark}]%
      {\fancyplain{}{\thepage}}
\cfoot{}
\sloppy

\ifpdf
   \usepackage[pdftex]{graphicx}
   \pdfinfo{
      /Title (Title)
      /Subject (Subject)
      /Author (Ali Al-Shaikh, Tomoaki Ohtsuki)
      /Keywords (Q-Learning,Superposed Multicarrier Transmission)
   }
\else
   \usepackage{graphicx}
\fi

答案1

该包breqn导致了这里的问题。请参阅我已注释掉该包的 MWE breqn

\documentclass[12pt, a4paper, oneside]{book}
\usepackage{listings}
\usepackage{float}
\usepackage{graphicx}
\usepackage{color,soul}
\usepackage[overlay,absolute]{textpos}
\usepackage{tikz}
\usepackage{amsmath}
\usepackage{relsize}
%\usepackage{breqn}
\usepackage{ragged2e}
\setlength{\TPHorizModule}{1cm}
\setlength{\TPVertModule}{1cm}



\usepackage{bm,amsmath,amssymb,color,subfigure}
\usepackage{fancyhdr, ifpdf}
\pagestyle{fancyplain}

%\renewcommand{\baselinestretch}{1.7}

%% some redefination of the headers and footers
\renewcommand{\chaptermark}[1]%
             {\markboth{#1}{}}
\renewcommand{\sectionmark}[1]%
             {\markright{\thesection\ #1}}
\lhead[\fancyplain{}{\thepage}]%
      {\fancyplain{}{\rightmark}}
\rhead[\fancyplain{}{\leftmark}]%
      {\fancyplain{}{\thepage}}
\cfoot{}
\sloppy

\ifpdf
%   \usepackage[pdftex]{graphicx}
   \pdfinfo{
      /Title (Title)
      /Subject (Subject)
      /Author (Ali Al-Shaikh, Tomoaki Ohtsuki)
      /Keywords (Q-Learning,Superposed Multicarrier Transmission)
   }
%\else
%   \usepackage{graphicx}
\fi

\begin{document}

$\widetilde{x}$

\end{document}

那么,如何修复包的这个问题呢?答案很简单,如果你要随 一起breqn加载包,那么在加载 之后 再加载包。amssymbbreqnbreqnamssymb

因此,固定的 MWE 为:

\documentclass[12pt, a4paper, oneside]{book}
\usepackage{listings}
\usepackage{float}
\usepackage{graphicx}
\usepackage{color,soul}
\usepackage[overlay,absolute]{textpos}
\usepackage{tikz}
\usepackage{amsmath}
\usepackage{relsize}
\usepackage{ragged2e}
\setlength{\TPHorizModule}{1cm}
\setlength{\TPVertModule}{1cm}

\usepackage{bm,amsmath,amssymb,color,subfigure}
\usepackage{breqn}  % <------ added here
\usepackage{fancyhdr, ifpdf}
\pagestyle{fancyplain}

%\renewcommand{\baselinestretch}{1.7}

%% some redefination of the headers and footers
\renewcommand{\chaptermark}[1]%
             {\markboth{#1}{}}
\renewcommand{\sectionmark}[1]%
             {\markright{\thesection\ #1}}
\lhead[\fancyplain{}{\thepage}]%
      {\fancyplain{}{\rightmark}}
\rhead[\fancyplain{}{\leftmark}]%
      {\fancyplain{}{\thepage}}
\cfoot{}
\sloppy

\ifpdf
%   \usepackage[pdftex]{graphicx}
   \pdfinfo{
      /Title (Title)
      /Subject (Subject)
      /Author (Ali Al-Shaikh, Tomoaki Ohtsuki)
      /Keywords (Q-Learning,Superposed Multicarrier Transmission)
   }
%\else
%   \usepackage{graphicx}
\fi

\begin{document}

$\widetilde{x}$

\end{document}

您还会看到,由于存在选项冲突错误,我还评论了以下内容:

\ifpdf
%   \usepackage[pdftex]{graphicx}
   \pdfinfo{
      /Title (Title)
      /Subject (Subject)
      /Author (Ali Al-Shaikh, Tomoaki Ohtsuki)
      /Keywords (Q-Learning,Superposed Multicarrier Transmission)
   }
%\else
%   \usepackage{graphicx}
\fi

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