投影机中的 XCharter 字体

Question

我想XCharter在 beamer 环境中使用字体包，但只有书写是用这种字体，数学环境我无法更改。

对于代码，

\documentclass{beamer}
\usepackage{XCharter}

\begin{document}
\begin{frame}
\frametitle{Sample frame title}
This is some text in the first frame. This is some text in the first frame. This is some text in the first frame.

Math: $f:X \to X$, $\{f^n\}_{n=0}^{\infty}$
\end{frame}

\end{document}

输出为

但在正常文档中，数学环境应该如下图所示。

Answer 1

\documentclass{beamer}
\usepackage{XCharter}
\usefonttheme{professionalfonts}

\begin{document}
\begin{frame}
\frametitle{Sample frame title}
This is some text in the first frame. This is some text in the first frame. This is some text in the first frame.

Math: $f:X \to X$, $\{f^n\}_{n=0}^{\infty}$
\end{frame}

\end{document}

Answer 2

如果您使用 lualatex 进行编译，则可以使用该xcharter-otf包，它还会加载相应的 xcharter 数学字体。这比将 xcharter 文本与计算机现代数学相结合会产生更均匀的结果。

% !TeX TS-program = lualatex

\documentclass{beamer}

\usefonttheme{serif}
\usefonttheme{professionalfonts}
\usepackage{xcharter-otf}

\begin{document}
\begin{frame}
\frametitle{Sample frame title}
This is some text in the first frame. This is some text in the first frame. This is some text in the first frame.

Math: $f:X \to X$, $\{f^n\}_{n=0}^{\infty}$
\end{frame}

\end{document}

如果您更喜欢 pdflatex，您可以使用该mathdesign包：

\documentclass{beamer}

\usefonttheme{serif}
\usefonttheme{professionalfonts}

\usepackage[bitstream-charter]{mathdesign}

\begin{document}
\begin{frame}
\frametitle{Sample frame title}
This is some text in the first frame. This is some text in the first frame. This is some text in the first frame.

Math: $f:X \to X$, $\{f^n\}_{n=0}^{\infty}$
\end{frame}

\end{document}