LuaLaTeX + libertine...数学字体的问题

Question

是否可以使用 Libertine otf 字体（使用 LuaLaTeX 和例如包 libertine 进行自动设置）来处理除数学模式之外的所有情况，在数学模式下我想使用 newtxmath 及其 libertine 选项（使用 pdfLaTeX 产生可接受的输出）？

两者都不 ：

\usepackage[libertine]{newtxmath}
\usepackage[no-math]{fontspec}
\usepackage{libertine}

也不

\usepackage[libertine]{newtxmath}
\usepackage[no-math]{fontspec}
\setmainfont[Ligatures={TeX}]{Linux Libertine O}

成功了。我使用以下命令获取数学的 CM 字体：

%!TEX program = lualatex

\documentclass[]{scrbook}

\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{mathtools}

\usepackage[libertine]{newtxmath}
\usepackage[no-math]{fontspec}
\usepackage{libertine}

\begin{document}

\begin{equation}
    \mathit{TRUC} = \frac{1}{10} \times \sum _{d=0.2}^{12.8} \frac{\pi \times d \times A_{d}}{E_{d}}
\end{equation}

\end{document}

Answer 1

既然你给出了no-math选择，你就必须提供帮助fontspec：

\documentclass[]{scrbook}

\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{mathtools}

\usepackage[libertine]{newtxmath}
\usepackage[no-math]{fontspec}
\usepackage{libertine}

\DeclareSymbolFont{operators}{\encodingdefault}{\familydefault}{\mddefault}{n}
\DeclareMathAlphabet{\mathit}{\encodingdefault}{\familydefault}{\mddefault}{it}
\DeclareMathAlphabet{\mathbf}{\encodingdefault}{\familydefault}{\bfdefault}{n}

\begin{document}

\begin{equation}
    \mathit{TRUC} = \frac{1}{10} \times \sum _{d=0.2}^{12.8} \frac{\pi \times d \times A_{d}}{E_{d}}
\end{equation}

$\mathbf{ABC}$

\end{document}

否则，您需要恢复数字的标准数学代码。

\documentclass[]{scrbook}

\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{mathtools}

\usepackage[libertine]{newtxmath}
\usepackage{fontspec}
\usepackage{libertine}

\AtBeginDocument{%
  \DeclareMathSymbol{0}{\mathalpha}{operators}{`0}%
  \DeclareMathSymbol{1}{\mathalpha}{operators}{`1}%
  \DeclareMathSymbol{2}{\mathalpha}{operators}{`2}%
  \DeclareMathSymbol{3}{\mathalpha}{operators}{`3}%
  \DeclareMathSymbol{4}{\mathalpha}{operators}{`4}%
  \DeclareMathSymbol{5}{\mathalpha}{operators}{`5}%
  \DeclareMathSymbol{6}{\mathalpha}{operators}{`6}%
  \DeclareMathSymbol{7}{\mathalpha}{operators}{`7}%
  \DeclareMathSymbol{8}{\mathalpha}{operators}{`8}%
  \DeclareMathSymbol{9}{\mathalpha}{operators}{`9}%
}

\begin{document}

\showthe\mathcode`1

\begin{equation}
    \mathit{TRUC} = \frac{1}{10} \times \sum _{d=0.2}^{12.8} \frac{\pi \times d \times A_{d}}{E_{d}}
\end{equation}

$\mathbf{ABC}$

\end{document}

Answer 2

另一种方法如下，使用 Linux Libertine 系统字体，例如在 lualatex 下：

\documentclass[]{scrbook}

\usepackage{luacode,luatexbase}
\usepackage{mathtools}
\usepackage{amssymb}

\usepackage[T1]{fontenc}
\usepackage[scaled=.85]{beramono}% used \mathtt; could use Libertine Mono
\usepackage[type1,scaled=.9]{cabin}% used \mathsf; could use Biolinum

\usepackage[libertine]{newtxmath}%

\usepackage{bm}% access to bold math; 

\providecommand\mathbfit[1]{\bm{\mathit #1}}% since unicode-math not loaded here.

\usepackage[no-math]{fontspec}
\setmainfont{Linux Libertine O} 
\setmonofont{Linux Libertine Mono O}[Scale=0.89]
\setsansfont{Linux Biolinum O}[Scale=MatchUppercase]


\begin{document}

\begin{equation}
    \mathit{TRUC} = \frac{1}{10} \times \sum _{d=0.2}^{12.8} \frac{\pi 
\times d \times A_{d}}{E_{d}}
\end{equation}

$\mathbf{ABC}$

$\mathbfit{ABC}$

\end{document}