How to make a document in Times New Roman font of English, Greek, number, all for the text, the math and the text in math mode

math-modetimes

I set main font as Times New Roman for the whole document, and I've tried using newtxtext, newtxmath, pslatex, tgtermes, txfonts for those parts concerned with math equation presenting in Times New Roman, but I found that each way would leave sometimes the text, sometimes the Greek in the math equation, sometimes the number in the math equation, sometimes the text next to the math equation not prensenting in Times New Roman.
Which means I didn't find a way to make all parts of my document present in Times New Roman perfectly.
Hope someone can help me.
Thanks a lot.

\documentclass{article}
%\usepackage{amsfonts}
%\usepackage{amsthm}
%\usepackage{amsmath, amssymb}
%\usepackage{tgtermes}
%\usepackage{pslatex}
\usepackage{newtxtext, newtxmath}
\usepackage{polyglossia}
    \setdefaultlanguage{english}
    \setotherlanguages{greek,russian}
\usepackage{fontspec}
    \setmainfont{Times New Roman}

\begin{document}
\textgreek{χ}\textsuperscript{2} distribution
\begin{align*}
&\chi^2\text{\ distribution}\\
&f(x)=\frac{1}{\beta^{\alpha} \Gamma(\alpha)} x^{\alpha-1} e^{-\frac{x}{\beta}} \qquad \alpha>0, \beta>0\\
&\text{for\ } \ \alpha=\frac{\nu}{2}, \beta=2 \qquad f(x)=\frac{1}{2^{\frac{\nu}{2}} \Gamma\left(\frac{\nu}{2}\right)} x^{\frac{\nu}{2}-1} e^{-\frac{x}{2}} \qquad x>0
\end{align*}
\end{document}

Best Answer

This worked for me.

\documentclass{article}
%\usepackage{amsfonts}
%\usepackage{amsthm}
%\usepackage{amsmath, amssymb}
%\usepackage{tgtermes}
%\usepackage{pslatex}
\usepackage{unicode-math}
\usepackage{polyglossia}
    \setdefaultlanguage{english}
    \setotherlanguages{greek,russian}
 
\setmainfont{Times New Roman}
\setmathfont{TeX Gyre Termes Math}[Scale = MatchLowercase]
\newfontfamily\greekfont{Times New Roman}[Script=Greek, Language=Greek]
\newfontfamily\russianfont{Times New Roman}[Script=Cyrillic, Language=Russian]


\begin{document}
\textgreek{χ}\textsuperscript{2} distribution
\begin{align*}
&\chi^2\text{\ distribution}\\
&f(x)=\frac{1}{\beta^{\alpha} \Gamma(\alpha)} x^{\alpha-1} e^{-\frac{x}{\beta}} \qquad \alpha>0, \beta>0\\
&\text{for\ } \ \alpha=\frac{\nu}{2}, \beta=2 \qquad f(x)=\frac{1}{2^{\frac{\nu}{2}} \Gamma\left(\frac{\nu}{2}\right)} x^{\frac{\nu}{2}-1} e^{-\frac{x}{2}} \qquad x>0
\end{align*}
\end{document}

The unicode-math package lets you cut the gordian knot of legacy 8-bit font packages.

If you don't like TeX Gyre Termes Math’s letters, you could add these lines to replace them with Times New Roman:

\setmathfont{Times New Roman Italic}[range=it]
\setmathfont{Times New Roman}[range=up]
\setmathfont{Times New Roman Bold Italic}[range=bfit]
\setmathfont{Times New Roman Bold}[range=bfup]

In pdftex, you might load \usepackage{tempora,newtxmath} and \usepackage[greek, russian, english]{babel}.

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