在对齐方程一侧的 QED

Question

我怎样才能将方程的 QED 符号aligned放在右边的证明中，而不是放在新行中？

梅威瑟：

\documentclass{article}
\usepackage{amsmath} %in the following MWE
\usepackage{amsthm}

\begin{document}
    \begin{proof}
        Here's an equation:
        \begin{equation}
            \begin{aligned}
                \mbox{minimize}\enspace &f(x),\\
                \text{subject to} \enspace & Ax \geq a,\\
                & Bx \geq b,\\
                & Cx \geq c.
            \end{aligned}
        \end{equation}
    \end{proof}
\end{document}

结果：

想要的结果：

Answer 1

\documentclass{report}
\usepackage{amssymb,amsmath,amsthm}

\begin{document}


\begin{proof}
Proof includes a long, multi-line equation.
\begin{align}
Here's an equation:
\mbox{minimize}\enspace &f(x),\nonumber\\
\text{subject to} \enspace & Ax \geq a,\\
& Bx \geq b,\nonumber\\
& Cx \geq c.\qedhere
\end{align}
\end{proof}

\end{document}

Answer 2

这会将其置于tombstone最后一行的末尾。

\documentclass{article}

\usepackage{amsmath} %in the following MWE
\usepackage{amsthm}

\newcommand{\QED}{ \par \vspace{-1.7\baselineskip}\qedhere}%  added <<<<<<<<<<<<

\begin{document}
    \begin{proof}
        Here's an equation:
        \begin{equation}
            \begin{aligned}
                \mbox{minimize}\enspace &f(x),\\
                \text{subject to} \enspace & Ax \geq a,\\
                & Bx \geq b,\\ 
            & Cx \geq c.
            \end{aligned} 
         \end{equation}
     \QED % <<<<<<<<<<<<<<<
    \end{proof}

\end{document}

Answer 3

最简单的方法是不是以显示结束证明。

您可以这样做：您需要插入适量的负空间来取消新行和显示下方的跳过。

\documentclass{article}
\usepackage{amsmath} %in the following MWE
\usepackage{amsthm}

\begin{document}

\begin{proof}
Here's an equation:
\begin{equation}
  \begin{aligned}
  \mbox{minimize}\enspace &f(x),\\
  \text{subject to} \enspace & Ax \geq a,\\
  & Bx \geq b,\\
  & Cx \geq c.
  \end{aligned}
  \end{equation}                 
\vadjust pre {\nobreak\vskip-\glueexpr\baselineskip+\belowdisplayskip}
\end{proof}

Some text follows
\end{document}