我正在使用memoir文档类为我的硕士课程编写一些文档，包括我的论文。我决定使用字体mathpazo(Palatino)，因为我认为它看起来很棒，但是当我尝试写一些不等式时，编译后不会出现小于和大于符号 (<和>)，并且没有错误，只有一堆警告。
因此，如果我想写表达式：
\begin{equation}
a<1 %also when I use $a<1$
\end{equation}
输出结果如下：
符号<不存在！唯一的解决方法是使用\textrm{<}，但我想它看起来有点不同。最相关的警告如下所示：
LaTeX Font Warning: Font shape `T1/pplx/bx/sc' undefined(Font) using `T1/pplx/bx/n' instead on input line 32.
Class memoir Warning: The material used in the headers is too large
(15.48003pt) for the given head height (14.5pt), it is recommended to
either increase the head height or redesign the header
(in both cases you will find help in the memoir manual). on input line 35.
我已加载amsmath和amsmath包。这是 MWE（非常大，抱歉）：
\documentclass[letterpaper,12pt,openany,final]{memoir}
\usepackage[utf8x]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{graphicx} %Gráficos
\usepackage[top=4cm,right=2.5cm,left=3cm, bottom=3cm]{geometry}
\usepackage{babelbib}
\usepackage{tikz}
\usepackage{ucs}
\usepackage{courier}
\usepackage{calligra}
\usepackage{xcolor}
\usepackage{color,calc,graphicx,soul,fourier}
\usepackage{float}
\usepackage{rotating}
\usepackage{parskip}
\newcommand\missing[1]{\textcolor{red}{\textbf{#1}}}
% \usepackage{pdflscape}
\usepackage[sc]{mathpazo} %Fuente
\usepackage{epstopdf}
\usepackage{tikz} %Dibujo
\usetikzlibrary{shapes,arrows}
\setlength{\evensidemargin}{\oddsidemargin}
\usetikzlibrary{calc} %Dibujo
\usetikzlibrary{decorations.pathmorphing} %Dibujo
%opening
\title{Lorem Ipsum}
\author{DOlor Sit amet}
\firmlists*
\usepackage{textcomp}
\usepackage{listingsutf8}
\renewcommand\lstlistingname{Código}
\renewcommand\lstlistlistingname{Índice de Códigos Fuente}
\lstset{
backgroundcolor=\color{white},
tabsize=4,
rulecolor=,
literate={ó}{{\'o}}1
{á}{{\'a}}1
{é}{{\'e}}1
{º}{{\textdegree}}1
{ú}{{\'u}}1,
escapeinside={\%*}{*)},
language=octave,
basicstyle=\scriptsize,
numberstyle=\tiny,
upquote=true,
aboveskip={1.5\baselineskip},
columns=fixed,
showstringspaces=false,
extendedchars=true,
breaklines=true,
prebreak = \raisebox{0ex}[0ex][0ex]{\ensuremath{\hookleftarrow}},
frame=single,
showtabs=false,
name=Feedservoplot
showspaces=false,
texcl=false,
inputencoding=latin1,
numbers=left,
firstnumber=auto,
showstringspaces=false,
identifierstyle=\ttfamily,
keywordstyle=\color[rgb]{0,0,1},
commentstyle=\color[rgb]{0.133,0.545,0.133},
stringstyle=\color[rgb]{0.627,0.126,0.941},
escapeinside={(*@}{@*)}
}
\usepackage[protrusion=true,expansion=true]{microtype} %Alineado óptico
\usepackage{amssymb}
\usepackage{amsmath}
\setlength{\footmarksep}{-1.8em}
\setlength{\footmarkwidth}{1.8em}
\setlength{\footmarksep}{0em}
\footmarkstyle{#1\hfill}
\definecolor{nicered}{rgb}{.647,.129,.149}
\makeatletter
\newlength\dlf@normtxtw
\setlength\dlf@normtxtw{\textwidth}
\def\myhelvetfont{\def\sfdefault{mdput}}
\newsavebox{\feline@chapter}
\newcommand\feline@chapter@marker[1][4cm]{%
\sbox\feline@chapter{%
\resizebox{!}{#1}{\fboxsep=1pt%
\colorbox{nicered}{\color{white}\bfseries\sffamily\thechapter}%
}}%
\rotatebox{90}{%
\resizebox{%
\heightof{\usebox{\feline@chapter}}+\depthof{\usebox{\feline@chapter}}}%
{!}{\scshape\so\@chapapp}}\quad%
\raisebox{\depthof{\usebox{\feline@chapter}}}{\usebox{\feline@chapter}}%
}
\newcommand\feline@chm[1][4cm]{%
\sbox\feline@chapter{\feline@chapter@marker[#1]}%
\makebox[0pt][l]{% aka \rlap
\makebox[0cm][r]{\usebox\feline@chapter}%
}}
\makechapterstyle{daleif1}{
\renewcommand\chapnamefont{\normalfont\Large\scshape\raggedleft\so}
\renewcommand\chaptitlefont{\normalfont\huge\bfseries\scshape\color{nicered}}
\renewcommand\chapternamenum{}
\renewcommand\printchaptername{}
\renewcommand\printchapternum{\null\hfill\feline@chm[2.5cm]\par}
\renewcommand\afterchapternum{\par\vskip\midchapskip}
\renewcommand\printchaptertitle[1]{\chaptitlefont\raggedleft ##1\par}
}
\makeatother
\chapterstyle{daleif1}
\makechapterstyle{daleif12}{
\renewcommand\chapnamefont{\normalfont\Large\scshape\raggedleft\so}
\renewcommand\chaptitlefont{\normalfont\huge\bfseries\scshape\color{nicered}}
\renewcommand\chapternamenum{}
\renewcommand\printchaptername{}
\renewcommand\printchapternum{\null\hfill\feline@chm[2.5cm]\par}
\renewcommand\afterchapternum{\par\vskip\midchapskip}
\renewcommand\printchaptertitle[1]{\chaptitlefont\raggedright ##1\par}
}
\makeatletter
\renewenvironment{thebibliography}[1]
{\chapter*{\refname}%
\@mkboth{\MakeUppercase\refname}{\MakeUppercase\refname}%
\list{\@biblabel{\@arabic\c@enumiv}}%
{\settowidth\labelwidth{\@biblabel{#1}}%
\leftmargin\labelwidth
\advance\leftmargin20pt% change 20 pt according to your needs
\advance\leftmargin\labelsep
\setlength\itemindent{-40pt}% change using the inverse of the length
% used before
\@openbib@code
\usecounter{enumiv}%
\let\p@enumiv\@empty
\renewcommand\theenumiv{\@arabic\c@enumiv}}%
\sloppy
\clubpenalty4000
\@clubpenalty \clubpenalty
\widowpenalty4000%
\sfcode`\.\@m}
{\def\@noitemerr
{\@latex@warning{Empty `thebibliography' environment}}%
\endlist}
\renewcommand\newblock{\hskip .11em\@plus.33em\@minus.07em}
\makeatother
%%=================%%
%%Header and footer%%
%%=================%%
\makepagestyle{tesis2}
\makepsmarks{tesis2}{%
\createmark{section}{left}{nonumber}{}{}
\createmark{section}{right}{nonumber}{}{}
}
\makepagestyle{TOC}
\makepsmarks{TOC}{%
\createmark{section}{left}{nonumber}{}{}
\createmark{section}{right}{nonumber}{}{}
}
\makeevenhead{TOC}{}{}{\bfseries
\leftmark}
\makeoddhead{TOC}{}{}{\bfseries
\rightmark}
\makeevenfoot{TOC}{}{\thepage}{}
\makeoddfoot{TOC}{}{\thepage}{}
\makefootrule{TOC}{\textwidth}{0.5pt}{0pt}
\makeheadrule{TOC}{\textwidth}{0.5pt}
\makepagestyle{BIB}
\makepsmarks{BIB}{%
\createmark{chapter}{left}{nonumber}{}{}
\createmark{section}{right}{nonumber}{}{}
}
\makeevenhead{BIB}{}{}{\bfseries
Referencias}
\makeoddhead{BIB}{\bfseries Referencias}{}{}
\makeevenfoot{BIB}{}{\thepage}{}
\makeoddfoot{BIB}{}{\thepage}{}
\makefootrule{BIB}{\textwidth}{0.5pt}{0pt}
\makeheadrule{BIB}{\textwidth}{0.5pt}
\makeevenhead{tesis2}{\bfseries\textsc{Sección
\thesection:}}{}{\bfseries
\rightmark }
\makeoddhead{tesis2}{\bfseries \textsc{Sección \thesection:}}{}{\bfseries
\rightmark}
\makeevenfoot{tesis2}{}{\thepage}{}
\makeoddfoot{tesis2}{}{\thepage}{}
\makefootrule{tesis2}{\textwidth}{0.5pt}{0pt}
\makeheadrule{tesis2}{\textwidth}{0.5pt}
\usepackage[activeacute,spanish] {babel}
\renewcommand\shorthandsspanish{}
\renewcommand{\arraystretch}{1.2}
\clubpenalty=10000
\widowpenalty=10000
\setcounter{tocdepth}{2}
\setcounter{secnumdepth}{2}
\setcounter{lofdepth}{2}
\usepackage[]{hyperref}
\usepackage{memhfixc}
\usepackage[inner]{showlabels}
\showlabels{cite}
\begin{document}
\setcounter{chapter}{1}
\setlength{\evensidemargin}{\oddsidemargin}
\setlength{\footskip}{30pt}
\tableofcontents{\pagestyle{tesis2}}
\pagestyle{TOC}
\newpage
\listoffigures
\pagestyle{tesis2}
\renewcommand{\baselinestretch}{1.5}
\chapter{Lorem ipsum}
Lorem ipsum dolor sit amet:
\begin{equation}
a<0
\end{equation}
\end{document}
有任何想法吗？
答案1
请解释一下为什么你同时使用fourier和mathpazo？它们是罪魁祸首。此外，这与memoir
\documentclass{article}
\usepackage{fourier}
\usepackage{mathpazo}
\begin{document}
\begin{equation}
a<0
\end{equation}
\end{document}
答案2
您可以通过在之前提供以下几行来解决 fourier 包的问题\begin{document}：
\DeclareMathSymbol{<}{\mathrel}{letters}{'074}
\DeclareMathSymbol{>}{\mathrel}{letters}{'076}
因此，>和将从字体<中取出。cmmi