答案1
我建议tikz-cd
:
\documentclass{article}
\usepackage{amsmath,amssymb}
\usepackage{tikz-cd}
\begin{document}
\[
\begin{tikzcd}[column sep=huge]
\biggl\{
\begin{tabular}{@{}c@{}}
Ideals of \\ $\mathbb{K}[\alpha_1,\dots,\alpha_n]$
\end{tabular}
\biggr\}
\arrow[r,shift left=1ex,"Z"]
&
\biggl\{
\begin{tabular}{@{}c@{}}
Subsets of $\mathbb{A}^n$
\end{tabular}
\biggr\}
\arrow[l,shift left=1ex,"I"]
\end{tikzcd}
\]
\end{document}
你真的想我位于箭头下方,以避免歧义。
答案2
也许是这样的?
\documentclass{article}
\usepackage{amsmath}
\usepackage{amssymb}
\begin{document}
\begin{equation*}
\left\{
\begin{matrix}
\text{Ideals of} \\
\mathbb{K}\{\alpha_1,\ldots,\alpha_n\} \\
\end{matrix}
\right\}
\begin{matrix}
\xrightarrow{\mskip50mu \smash{Z} \mskip50mu} \\
\xleftarrow{\mskip50mu \smash{I} \mskip50mu} \\
\end{matrix}
\left\{
\begin{matrix}
\text{subsets of } \mathbb{A}^n \\
\\
\end{matrix}
\right\}
\end{equation*}
\end{document}
答案3
或者像这样...
\documentclass{article}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{mathtools}
\begin{document}
\[\Bigg\{\begin{array}{c}
\text{Ideals of}\\
\mathbb{K}[\alpha_{1},\dots,\alpha_{n}]
\end{array}\Bigg\}
\xleftrightharpoons[~~~~I~~~~]{Z}
\Bigg\{ \begin{array}{c}
\text{subsets of}\ \mathbb{A}^{n}
\end{array}
\Bigg\}\]
\end{document}