答案1
对于左上角的单个字母,可以使用\prescript
和\mathrlap
来自mathtools
包。对于多个字符,请尝试leftindex
包。
\documentclass{article}
\usepackage{mathtools} % can be deleted since leftindex preloads mathtools
\usepackage{fixdif} % for \d
\usepackage{leftindex}
\begin{document}
\[
\prescript{\mathrlap{\gamma}}{}{\int} f \d x \quad
\prescript{\partial V}{}{\int} f \d x \quad
\leftindex^{\partial V} {\int} f \d x \quad
\leftindex^\gamma {\int} f \d x \quad
\leftindex^{\alpha\beta\gamma\partial V} {\int} f \d x
\]
\end{document}
有关左脚本和右脚本的更多信息,请参阅此帖子左右下标/上标