Set math and text fonts independently in Beamer (using PDFLaTeX)

Question

I am working on a Beamer presentation, and I would like to use sans serif font (CMBright) for text, and a serif font (Computer Modern) for maths. Sans serif maths looks pretty ugly to me.

Beamer default settings are sans serif maths and text :

enter image description here

I found I can switch maths font to serif with the line

\usefonttheme[onlymath]{serif}

which yields (see MWE1 below)

enter image description here

Now maths look nice, but I would like to change the default text font to CMBright. I tried to naively combine those two lines (see MWE2)

\usefonttheme[onlymath]{serif}
\usepackage{cmbright}

but is gives me everything in CBMright (ie sans serif)

enter image description here

I seemed to find some people using LuaTeX or related systems, but I would like to find a solution using PDFLaTeX only.

More generally, is there a way to set the maths and text fonts independently using PDFLaTeX, ie to any font different than CM and CMBright ?

MWE1

\documentclass{beamer}  
\usefonttheme[onlymath]{serif}  
\begin{document}
\begin{frame}
Some text, $x^2 + y^2 = r^2$
\end{frame}
\end{document}

MWE2

\documentclass{beamer}  
\usepackage{cmbright}
\begin{document}
\begin{frame}
Some text, $x^2 + y^2 = r^2$
\end{frame}
\end{document}

Welcome to TeX.SX! You can have a look at our starter guide to familiarize yourself further with our format. — jub0bs, Aug 28 '14 at 16:02

score 8 · Accepted Answer · 2018-11-26T10:46:02.307

8

\documentclass{beamer}  
\usepackage[T1]{fontenc}
\usefonttheme[onlymath]{serif}
\renewcommand\sfdefault{cmbr}
\begin{document}
\begin{frame}
Some text, $x^2 + y^2 = r^2$
\end{frame}
\end{document}

or

\documentclass[professionalfonts]{beamer}  
\usepackage[T1]{fontenc}
\usepackage{cmbright}
\usefonttheme[onlymath]{serif}
\begin{document}
    \begin{frame}
    Some text, $x^2 + y^2 = r^2$
\end{frame}
\end{document}

edited Nov 26 '18 at 10:46

answered Aug 29 '14 at 09:38

Thank you ! How do we know one has to refer to CMBright as cmbr in this context ? Where can I find the abbreviation to use in case I want another font ? – presenter Aug 29 '14 at 09:48
Go into the directory of cmbright.sty. There you find files like t1cmbr.fd. This is the file definition file (.fd) of family cmbr in T1 font encoding – Aug 29 '14 at 10:15
But \usepackage{cmbright} does a lot more settings than just \renewcommand\sfdefault{cmbr}. How to keep these? – AlexG Nov 26 '18 at 10:40
see edited answer – Nov 26 '18 at 10:46
Unfortunately, \usefonttheme[onlymath]{serif} has no effect if cmbright is loaded as a package. (As shown by OP.) – AlexG Nov 26 '18 at 11:04
1

run it with xelatex or lualatex – Nov 26 '18 at 11:25

score 5 · Answer 2 · answered Jul 12 '20 at 12:24

5

It might be late for this answer but I found a workaround for your problem. Simply put sefif and professionalfont into the preamble like this:

\documentclass[serif,professionalfont]{beamer}

and then load your font package (in my case it is iwona)

\usepackage{iwona}

You do NOT need to use

\usefonttheme[onlymath]{serif}

I've tested on Overleaf with PDFLatex Compiler and TexLive2019. Hope others will find this useful.

answered Jul 12 '20 at 12:24

k2pctdn

194

Please note that the serif and professionalfont class options are obsolete. You should use the font themes of the same name instead. – samcarter_is_at_topanswers.xyz May 03 '23 at 21:35

Set math and text fonts independently in Beamer (using PDFLaTeX)

2 Answers2

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