[Tex/LaTex] Change font to “Times New Roman” in math mode (e.g., $ equation $) in PDFLaTeX

fontsmath-modepdftex

I would like to have a unique font (Times New Roman or an equivalent one) for both text and equations.

I'm actually using the commands below, which work only for text mode:

\usepackage[T1]{fontenc}
\usepackage{newtxmath,newtxtext}

example:

\documentclass[twoside,b5paper,12pt,fleqn]{psd_thesis}
\usepackage{amsmath,amssymb,amsfonts}           
\usepackage[T1]{fontenc}
\usepackage{newtxmath,newtxtext}                

% Document
\begin{document}
example text mode: 12345

$example \ math \ mode: 12345$
\end{document}

The psd_thesis.cls is reported below:

\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{psd_thesis}

\DeclareOption*{\PassOptionsToClass{\CurrentOption}{report}}

\ProcessOptions

\LoadClass{report}

\renewcommand{\baselinestretch}{1.5}  % Double-spaced

\usepackage[round]{natbib}  % bib style

\usepackage[tx]{sfmath}      % a package of fonts
\usepackage{helvet}             % For Helvetica (Arial is just a bad copy of Helvetica)
\renewcommand\familydefault{\sfdefault}  

\renewcommand{\@makechapterhead}[1]{%
\vspace*{50\p@}%  {\parindent \z@ \raggedright \normalfont
\ifnum \c@secnumdepth >\m@ne
    \large \scshape \bfseries \@chapapp\space \thechapter
    \par\nobreak
    \vskip 20\p@
\fi
\interlinepenalty\@M
\large \bfseries #1\par\nobreak
\vskip 40\p@  }}

\renewcommand{\@makeschapterhead}[1]{%
\vspace*{50\p@}%{\parindent \z@ \raggedright
\normalfont
\interlinepenalty\@M
\large \scshape \bfseries  #1\par\nobreak
\vskip 40\p@  }}  

\renewcommand{\section}{\@startsection{section}% % the name{1}% % the level{0mm}% % the indent{3.0\baselineskip}% % the before skip{2.5\baselineskip}% % the after skip{\normalfont \normalsize}} % the style

\renewcommand{\subsection}{\@startsection{subsection}% % the name
{2}% % the level{0mm}% % the indent{-\baselineskip}% % the before skip{1.5\baselineskip}% % the after skip{\normalfont \normalsize}} % the style

\endinput

Best Answer

As far as I can see, the class is meant to typeset everything in a sans serif font. So, if you have to use it, don't try changing its settings.

If you are not required to use the class, just avoid it: its typographic decisions are funny, for example the enormous distance between a section title and the following text (twice and a half the baselineskip, with double spacing, means 1.85cm below; it's 2.2cm above).

Anyway, the part of the class that sets everything to sans serif is

\usepackage[tx]{sfmath}      % a package of fonts
\usepackage{helvet}             % For Helvetica (Arial is just a bad copy of Helvetica)
\renewcommand\familydefault{\sfdefault}

Comment it and you'll be free to choose whatever font you like.

Related Solutions

[Tex/LaTex] Change equation font to Times New Roman

Addressing your questions in turn:

To change only the math-mode font, while leaving the text-mode font unchanged (cmr, right?), you could load either the newtxmath package or the mtpro2 (short for MathTime Professional II) package. (Note that the latter package isn't free; however, a subset of the fonts, called the "lite" set, provides basic lettering capabilities -- but not "fancy" math fonts such as fraktur, caligraphic, curly, and blackboard bold styles -- and is free.) The mtpro2 font features "optically sized" glyphs for first-level sub- and superscript materials (aka "scriptstyle"-level materials).
- Separately, if you happen to use LuaTeX or XeTeX, you may want to give the "XITS Math" font package a try.
- If you happen to be a font purist: be aware that these font packages technically give you Times Roman, not Times New Roman. And if you're not a font purist? You may be excused for not noticing any differences -- they are are quite subtle.
In math-mode, be careful about making some symbols both bold and italics. In mathematics, each font shape and weight is generally understood to impart some special meaning. For sure, do not combine bolding and italics just for emphasis. Both newtxmath and mtpro2 provide methods for changing the slant of both lowercase and uppercase greek letters.
To make all displayed equations be set flush-left rather than centered, use the document class option fleqn.
How to set the contents of equations more compactly? Aaah, some would opine that MS Word's math mode is far too compact, leading to frequent overlaps of letters on the baseline and those in superscript or subscript position. Good news for you: Both newtxmath and mtpro2 render math expressions more compactly than does TeX's default math font (Computer Modern).

Putting these things together and simplifying some of your math code along the way leads to the following modified form of your MWE. The main substantive changes I've made are to replace the equation environment with an align environment and to replace the inner split environment with a bmatrix environment.

\documentclass[fleqn]{article}
\usepackage{amsmath}
\newcommand\QSJ{\mathit{QSJ}} % define a couple of acronyms
\newcommand\CML{\mathit{CML}}
\usepackage{newtxtext,newtxmath}
\begin{document}
\begin{equation}
\begin{split}
L_{\CML}( \theta ) 
&= \Biggl(\, \prod_{g  = 1}^{\QSJ - 1} 
             \prod_{g' = g + 1}^{\QSJ} 
      P\left( [ y ]_g = [ m ]_g,\ [ y ]_{g'} = [ m ]_{g'} \right)  
   \Biggr)\\
&= \Biggl(\, \prod_{g  = 1}^{\QSJ - 1} 
             \prod_{g' = g + 1}^{\QSJ} 
   \begin{bmatrix}
   \phantom{-}\Phi_2 ({\tilde \vartheta }_g,{\tilde \vartheta }_{g'},\nu_{gg'}) 
          - \Phi_2 ({\tilde \vartheta }_g,{\tilde \phi }_{g'},\nu _{gg'})\\
          - \Phi_2 ({\tilde \phi }_g,{\tilde \vartheta }_{g'},\nu _{gg'}) 
          + \Phi_2 ({\tilde \phi }_g,{\tilde \phi }_{g'},\nu _{gg'})
   \end{bmatrix} \Biggr)
\end{split}
\end{equation}
\end{document}

enter image description here

For comparison, here's how the equations look like if the times (for text font) and mtpro2 (for math font) packages instead of the newtxtext and newtxmath packages. The overall look is very similar, but the output produced with help of the newtxmath package is a bit more compact.

enter image description here

[Tex/LaTex] Times new roman font

Compile with XeLaTeX or LuaLaTeX, and use:

\usepackage{fontspec}
\setmainfont{Times New Roman}

This is true Times New Roman, via modern TeX engines.

Note: mathptmx and times packages (and txfonts) both use URW NimbusRomNo9L font, a clone of Times. AFAIK, it is very similar to Times. You can also use TeX Gyre Termes (based on Nimbus Roman), and XITS (based on STIX project) available in TeX dist.

There is indeed a timesnew package (in pclnfss bundle, without actual fonts) available in CTAN. It needs more configuration to make it work, using pdfLaTeX/Dvips.

And it is also possilbe to install Windows TTF fonts e.g. Times New Roman for pdfTeX, it is more tricky for normal users and the technique becomes outdated since XeTeX and LuaTeX are better choices.

Best Answer

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[Tex/LaTex] Change equation font to Times New Roman

[Tex/LaTex] Times new roman font

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