我更喜欢在文档中使用段落间距而不是缩进来区分不同的段落，但我的问题是，如果一个段落以显示数学结尾，那么就会留下双倍间距（因为我还将显示数学设置为上下 1em）有没有办法避免这种烦人的双倍间距？
\documentclass[a4paper, 12pt]{article}
\usepackage{graphicx}
\usepackage{amsmath}
\usepackage{bm}
\setlength{\parskip}{1em}
\begin{document}
\setlength{\abovedisplayskip}{1em}
\setlength{\belowdisplayskip}{1em}
\setlength{\jot}{0.5em}
\section{Section 1}
When I have text like this bit here, shortly followed by an equation such as
$$E = mc^2$$
\section{Section 2}
And a new section is started afterward, there is a double spacing between the end of the Maths and the start of section 2.
\end{document}