如果我使用\par，\author{}编译文件时会产生错误。那么如何解决这个问题？
最小工作示例如下：
\documentclass[a4paper]{article}
\title{\bf Arithmetization of Metamathematics in a General Setting}
\author{S. Feferman\thank{The results reported in this paper were obtained while the author was a student of Professor Alfred Tarski at the University of California, Berkeley. A more complete presentation of them has been given in the author's thesis [4]; announcement of the results has also been made in [5] and [6].
\par We also indebted to Professor Alfred Tarski for a numlber of helpful suggestions regarding this research; as well as to Professor Leon Henkin for his kind guidance durihg the period 19155-56 while Professor Alfred Tarski was on leave. We wish also to thank Professors Jolm Myhill and Georg Kreisel, both for a number of stimulating conversations, and also the latter for his helpful comments on a draft of this paper.
\par Finally，thanks are due to Professor Steven Orey for his interest in widening the range of application of our work, as will be evidenced at various points in the text.
\par This paper was prepared under Contract DA-04-200-0RD-997 for the Office of Ordnance research, U.S.A.}\\ Stanford, California}
\date{}
\begin{document}
\maketitle
\section{Introduction}
The method of arithmetization
\end{document}
欢迎任何建议。
答案1
在这种情况下，您可以使用\endgraf而不是\par。顺便说一下，命令是\thanks，而不是\thank：
\documentclass[a4paper]{article}
\usepackage{etoolbox}
\makeatletter
\patchcmd{\@maketitle}{\LARGE \@title \par}{\LARGE\bfseries \@title \par}{}{}
\makeatother
\title{Arithmetization of Metamathematics in a General Setting}
\author{S. Feferman\thanks{The results reported in this paper were
obtained while the author was a student of Professor Alfred Tarski at
the University of California, Berkeley. A more complete presentation
of them has been given in the author's thesis [4]; announcement of the
results has also been made in [5] and [6].
\endgraf We also indebted to Professor Alfred Tarski for a numlber of
helpful suggestions regarding this research; as well as to Professor
Leon Henkin for his kind guidance durihg the period 19155-56 while
Professor Alfred Tarski was on leave. We wish also to thank Professors
Jolm Myhill and Georg Kreisel, both for a number of stimulating
conversations, and also the latter for his helpful comments on a draft
of this paper.
\endgraf Finally, thanks are due to Professor Steven Orey for his
interest in widening the range of application of our work, as will be
evidenced at various points in the text.
\endgraf This paper was prepared under Contract DA-04-200-0RD-997 for
the Office of Ordnance research, U.S.A.}\\ Stanford, California}
\date{}
\begin{document}
\maketitle
\section{Introduction}
The method of arithmetization\dots
\end{document}
感谢 egreg，“Finally”后面的 unicode 逗号已被替换为普通逗号。您应该使用\bfseries或\textbf{...}代替\bf, 参见。我使用 \textit 或 \it、\bfseries 或 \bf 等有关系吗。
此外，最好不要在参数中包含此类格式\title，因为文档可能希望在其他地方使用该文本，而是修补 使用的标题打印宏\maketitle，就像我上面所做的那样。或者，您可以使用titling包裹更改课堂上标题的样式article：在这种情况下，你可以写
\usepackage{titling}
\pretitle{\begin{center}\LARGE\bfseries}
\posttitle{\par\end{center}\vskip 0.5em}
将 添加\bfseries到标题中。