将图片放置在字母位置

Question

我想知道您是否可以在文本中放置图片（JPG 或 PDF），如下图所示：

Answer 1

图像的处理方式与 LaTeX 中的字符相同，因此请按\includegraphics原样插入：

\documentclass{article}
\usepackage{graphicx}

\newcommand{\mysymbol}{%
  \raisebox{-.2\baselineskip}{% ...lower image slightly
    \includegraphics[height=.8\baselineskip]{example-image}}}

\begin{document}

In Theorem~2.4 we show that, for any given $x_0 \in \mathcal{H} \setminus A^{-1}(0)$, 
and $\theta > 0$, there exists a unique strong (locally Lipschitz in time) global solution
$t \mapsto (x(t), \lambda(t))$ of~\mbox{(4)} which satisfies the Cauchy data $x(0) = x_0$.
It is convenient to define 
$\mysymbol = \{(\omega,\eta,\zeta) : \psi_{\Lambda,\beta,h}(\omega,\eta,\zeta) = 0, \mathrm{hold(2,a),(2.b)}\}$.

\end{document}

请注意，我为您想要使用的“符号”定义了一个宏。如果您想在整个文档中重复使用该符号，这将是典型的做法；它促进一致性。

Answer 2

有一个\vcenter可以在 中工作的mathmode。它会自动处理高度并将图片置于标志水平的中心minus。因此，您的图片\newcommand看起来可以像这样：

\newcommand{\mysymbol}{%
  \vcenter{\hbox{\includegraphics[height=2\baselineskip]{example-image}}
  }
}

请参见下面带有稍大一点的图片的示例来了解其工作原理。

\documentclass{article}
\usepackage{graphicx}

\newcommand{\mysymbol}{%
  \vcenter{\hbox{\includegraphics[height=2\baselineskip]{example-image}}
  }
}

\begin{document}

In Theorem~2.4 we show that, for any given $x_0 \in \mathcal{H} \setminus A^{-1}(0)$, 
and $\theta > 0$, there exists a unique strong (locally Lipschitz in time) global solution
$t \mapsto (x(t), \lambda(t))$ of~\mbox{(4)} which satisfies the Cauchy data $x(0) = x_0$.
It is convenient to define 
$\mysymbol = \{(\omega,\eta,\zeta) : \psi_{\Lambda,\beta,h}(\omega,\eta,\zeta) = 0, \mathrm{hold(2,a),(2.b)}\}$.
\\
In Theorem~2.4 we show that, for any given $x_0 \in \mathcal{H} \setminus A^{-1}(0)$, 
and $\theta > 0$, there exists a unique strong (locally Lipschitz in time) global solution
$t \mapsto (x(t), \lambda(t))$ of~\mbox{(4)} which satisfies the Cauchy data $x(0) = x_0$.
It is convenient to define 
$\mysymbol = \{(\omega,\eta,\zeta) : \psi_{\Lambda,\beta,h}(\omega,\eta,\zeta) = 0, \mathrm{hold(2,a),(2.b)}\}$.

\end{document}