\[ \] 周围的相同空间和设置为个人值的 amsmath 环境

Question

我希望括号周围的空格与环境周围的空格相同\[，并且（上下，短或不短）从，理想情况下（我设置），\]alignequationamsmath\parskip=1ex

0.75\parskip plus 0.25\parskip minus 0.25 \parskip

平均能量损失

\documentclass{article}
\usepackage{amsmath}
\setlength\parskip{1ex}
\begin{document}



Some very very very very very long text
\begin{align*}
E \colon Q  &\longrightarrow QQ \\
(x_1 , x_2) &\longmapsto LL
\end{align*}
Some very very very very very long text.

Some very very very very very long text
\[ A=A \]
Some very very very very very long text.

Some very very very very very long text
\begin{equation*}
E \colon Q   =  QQ
\end{equation*}
Some very very very very very long text.

\end{document}