How can I have something like the following in LaTeX?
\begin{align}
\underbrace{equation1 \\ (line break) equation 2}_{text}
\end{align}
The problem is the line break.
I don't seem to find any solution online.
[Tex/LaTex] Breaking \underbrace over two lines
math-modeunderbrace
Related Solutions
I propose one of these solutions, more elegant from my point of view, than an oversized \underbrace. They're based respectively on the \underbracket command from mathtools, or on the \bclap command from stackengine.
\documentclass{article}
\usepackage{mathtools}
\usepackage[usestackEOL]{stackengine}
\begin{document}
\begin{equation*}
\bigl( 0, \ldots, \underbracket[0.4pt]{e_j}_{\clap{\scriptsize$i$-th position}}, \ldots, 0 \bigr)\vspace*{3ex}
\end{equation*}
Some text. Some more text. Some more text. Some more text. Some more text. Some more text. Some more text.
\begin{equation*}
\bigl( 0, \ldots, e_{\stackMath\bclap{\substack{\boldsymbol{\vert}\\\text{\scriptsize $ i $-th position}}}j}, \ldots, 0 \bigr)
\end{equation*}
Some text. Some more text. Some more text. Some more text. Some more text. Some more text. Some more text.
\end{document}
\documentclass{article}
\usepackage{mathtools,amssymb}
\begin{document}
\begin{gather*}
\overbrace{\underbrace{S^1_A \times S^1_B}_E\times
\underbrace{S^1_C\times\mathbb{R}}_{\mathbb{CP}^{N-1}}}^{\text{ABCDEFG}} \\[-\normalbaselineskip]
\underbrace{\kern5em}_{\text{magnetic flux}}
\end{gather*}
\end{document}
Best Answer
As daleif and I said, you should use an environment allowing linebreaks inside the
\underbrace. If it's just going to be text\parboxor similar commands are fine. If it's going to be math, you should use an environment such asaligned: