# How can I change the font of all equations?

I'd like to change my default font style in all equations of one document, not just single equation.

I guess I am using \usepackage[utf8]{inputenc} and \usepackage{amsmath}, which may be related to font setting.

Which font I want to change into is like

but now is

I am using pdfLaTex in TeXworks.

You have to use {\boldsymbol\beta}:

• thanks. but the style 'bold' is not an issue here, but just font style. – KENgerine Jul 31 '14 at 14:17
• I'm afraid I didn't understand very well what you require. Everything typeset in boldface? Or use another font that pleases you more? It's not very clear from your images. – Bernard Jul 31 '14 at 18:39
• Here is a sample of three different math fonts: fourier, based on Adobe Utopia, completed by heuristica to have optical smallcaps, superior and inferior figures, and oldstyle figures – Bernard Jul 31 '14 at 18:59

I used the bm package for the bold greek. The font looks like stix.

\documentclass{article}
\usepackage{amsmath,stix,bm}
\begin{document}
\begin{equation*}
\begin{split}
y_{it}
&= \mathbf{x'}_{it}\bm{\beta} + \mathbf{z'}_i \bm{\alpha} + \varepsilon_{it} \\
&= \mathbf{x'}_{it}\bm{\beta} + c_i + \varepsilon_{it}
\end{split}
\end{equation*}
\end{document}


• bold is not my question, but font style is good. how can i install the font? just adding \usepackage{stix} is not working. – KENgerine Jul 31 '14 at 12:59
• @KENgerine In TL2014 it is simply tlmgr install stix, on Ubuntu you do sudo apt-get install texlive-fonts-extra, on MikTeX open the package manager and search for stix. – Henri Menke Jul 31 '14 at 15:35

Here is a sample of three different math fonts:

• fourier, based on Adobe Utopia, completed by heuristica to have optical smallcaps, superior and inferior figures, and oldstyle figures.
• mathdesign's garamond option, based on URW Garamond No 8, completed by garamondx to have smallcaps (in regular, boldface, italic and boldface italic), oldstyle figures and superior figures.

Just comment and uncomment the relevant font loading lines in the following code to obtain the examples:

\documentclass{article}
\usepackage[utf8]{inputenc} %
\usepackage[T1]{fontenc}
%%%%%%%%%%%%%% for Utopia
%\usepackage{fourier}
%\usepackage{heuristica}

%%%%%%%%%%%%%% for Minion Pro
%\usepackage{MinionPro}

%%%%%%%%%%%%%% for URW Garamond
\usepackage[garamond]{mathdesign}
\usepackage{garamondx}
\usepackage{amsmath,bm}
\begin{document}
\begin{align*}
y_{it}
&= \mathbf{x'_{\mathit{it}}}\bm{\beta} + \mathbf{z'_\mathit{i}} \bm{\alpha} + \varepsilon_\mathit{it} \\
&= \mathbf{x'_{\mathit{it}}}\bm{\beta} + c_i + \varepsilon_\mathit{it}
\end{align*}
\end{document}


Fourier:

MinionPro:

URW Garamond:

The Keplerfonts for text and math:

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{amsmath,bm}
\usepackage{kpfonts}
\usepackage[math]{blindtext}
\usepackage[utf8]{inputenc}

\begin{document}
\begin{align*}
y_{it}
&= \mathbf{x'_{\mathit{it}}}\bm{\beta} + \mathbf{z'_\mathit{i}} \bm{\alpha} + \varepsilon_\mathit{it} \\
&= \mathbf{x'_{\mathit{it}}}\bm{\beta} + c_i + \varepsilon_\mathit{it}
\end{align*}

\blindtext
\blindmathpaper

\end{document}