创建带限制的花括号

Question

您好，我正在尝试创建带有右侧下限和上限的花括号，如图所示。我无法在括号上修复这些限制。我正在使用\bigl\{和\bigr\}来创建括号。

Answer 1

对我来说，标准方法有效。你试过这个吗？

\documentclass[]{article}

\usepackage{amsmath}

\begin{document}
Thus, we get
\[
  \bigl\{\beta^w_{u_j}\bigr\}_{j=1}^n
\]
and
\[
  \bigl\{\beta^m_{u_j}\bigr\}_{j=1}^n
\]

In the same line:
\[
  \bigl\{\beta^w_{u_j}\bigr\}_{j=1}^n
  \quad\text{and}\quad
  \bigl\{\beta^m_{u_j}\bigr\}_{j=1}^n
\]

This is a long line, so that the equations are in the middle of two lines.
Everything in the same line using inline $\bigl\{\beta^w_{u_j}\bigr\}_{j=1}^n$
and $\bigl\{\beta^m_{u_j}\bigr\}_{j=1}^n$. But this doesn't look good, because
it might stretch the linespacing.

Using 
\[
  \text{Thus, we get}\quad%
  \bigl\{\beta^w_{u_j}\bigr\}_{j=1}^n
  \quad\text{and}\quad
  \bigl\{\beta^m_{u_j}\bigr\}_{j=1}^n
\]
does look better for the line spacing, but honestly it is not that pretty, imho.
\end{document}