我想知道如何修复:
Namely the study of arrows in~$\Cat_{/\cal{E}}$.
错误是
Undefined control sequence.
< recently read > \Cat
l.46 ... view. Namely the study of arrows in~$\Cat _{/\cal{E}}$.
我在用
\usepackage[english,francais]{babel}
\usepackage{amssymb,url,xspace,smfthm}
\usepackage[all,cmtip]{xy}
答案1
无法抗拒。
\documentclass{article}
\usepackage{tikzsymbols}
\begin{document}
The theory of arrows from a topological point of view.
Namely the study of arrows in~$\Cat_{/\mathcal{E}}$.
\end{document}
更现实的版本,其输出与论文中所述一致:
\documentclass{article}
\usepackage{calrsfs}
\newcommand*{\Cat}{\mathbf{Cat}}
\begin{document}
The theory of arrows from a topological point of view.
Namely the study of arrows in~$\Cat_{/\mathcal{E}}$.
\end{document}