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I would like to use Concrete fonts as the math font (the same font use for math in the package ccfonts or concmath) for one document while using GFS Neohellenic for blackboard letters (because the ccfonts package doesn't implement blackboard letters for this font family) and I would like to set Times New Roman as text font only. I already asked a question on how to get blackboard letters for the ccfonts package here : How do I select a blackboard bold font for Concrete math?. The following MWE was given to me to achieve what I wanted :

\documentclass{article} \usepackage[math-style=ISO]{unicode-math} \usepackage[paperwidth=10cm]{geometry} % Format a MWE for TeX.SX \setmainfont{CMU Concrete}[ Ligatures=Common, UprightFont=cmunorm.otf, BoldFont=cmunobx.otf, ItalicFont=cmunoti.otf, BoldItalicFont=cmunobi.otf ] \setmathfont{GFS Neohellenic Math}[Scale=MatchLowercase] \setmathfont{cmunoti.otf}[range=it] \setmathfont{cmunorm.otf}[range=up] \begin{document} \noindent% Let \( (x,y) \in \mathbb{R} \times \mathbb{R} \) such that \( \sqrt{x^2 + y^2} \leq \varepsilon \). \end{document}

I never used LuaLaTeX and I don't understand how to mix Times New Roman and Concrete font in the same document. So here is my question :

How can I mix Concrete font as math font, Times New Roman as main font et GFS Neohellenic for blackboard letters in the same document using LuaLaTeX ?

I would like a MWE or links to ressources that explain how to mix fonts in LuaLaTeX.

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  • Do you want to use the math setup like in your MWE or do you actually want to use math symbols from Concrete? Commented Dec 17, 2021 at 19:01
  • I want to use the math setup like in my MWE and use Concrete as math font, not as main font as in my MWE, but I don't know how to mix this Commented Dec 17, 2021 at 19:50
  • cmunorm.otf, for example, has only 5 mathematical operators, and no Mathematical Alphanumeric Symbols unicode code block. Do you want to use one of the TeX Gyre ... Math fonts instead? (look in /texmf-dist/fonts/opentype/public/tex-gyre-math/) Commented Dec 18, 2021 at 10:19
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    Now that there is a Concrete Math Opentype font (ctan.org/pkg/concmath-otf), is your question still valid? Commented Feb 15, 2022 at 11:27
  • I wasn't aware of that, my question is still valid but was answered. Commented Feb 16, 2022 at 13:48

3 Answers 3

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Your request

"How can I mix Concrete font as math font, Times New Roman as main font et GFS Neohellenic for blackboard letters in the same document using LuaLaTeX?"

is not quite clear for me: Concrete fonts are text fonts usually associated with the AMS Euler fonts for maths.

One the other hand, Ulrik Vieth has issued (long ago, 1999) the concmath package which borrows the math letters (upright and italics) from the Concrete text fonts, unfortunately that is all metafont, not meant to be used with LuaTeX. I am not aware of any Concrete Math (Opentype) font usable with LuaTeX.

If you can accept Euler (upright) maths, you could try something like this:

\documentclass{article} \usepackage[math-style=upright]{unicode-math} \setmainfont{Times New Roman} \setmathfont{Neo Euler} % No math italics \setmathfont{GFS Neohellenic Math}[Scale=MatchUppercase,range=bb] \begin{document} Let $(x,y) \in \symbb{R} \times \symbb{R}$ such that $\sqrt{x^2 + y^2} \leq \varepsilon$. \end{document}

which outputs as:

enter image description here

Update 16th January 2022: the new (experimental) concmath-otf package available on CTAN and in the latest TeXLive provides a Concrete-Math OpenType font usable with LuaTeX and XeTeX engines.

][2] is the output of

\documentclass{article} \usepackage{unicode-math} \setmainfont{Times New Roman} \setmathfont{Concrete-Math.otf} \begin{document} Let $(x,y) \in \symbb{R} \times \symbb{R}$ such that $\sqrt{x^2 + y^2} \leq \varepsilon$. \end{document}
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  • I will edit my request, as I understand that it's not clear. I use for my documents the ccfonts package which use the concrete math letters (like concmath). So I want to use concrete math font with GFS Neohellenic Math font for blackboard letters and times as text font Commented Dec 18, 2021 at 12:51
  • The font catalogue tug.org/FontCatalogue/computerconcrete states: "Computer Concrete with Concrete Math is not available as Type 1 or OpenType." Commented Dec 18, 2021 at 14:26
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A reference comparison of some TeX Gyre Math fonts, so just an illustration, not an answer.

texgyremath fonts

Blue is the neohellenic bb.

MWE

\documentclass{article} \usepackage{xcolor} \usepackage[math-style=ISO]{unicode-math} \setmainfont{Times New Roman} \setmathfont{TeX Gyre Bonum Math} \newcommand\blueneoh{\setmathfont{GFS Neohellenic Math}[Scale=MatchLowercase,range=bb,Colour=blue]} \newcommand\testtext[1]{#1\par\setmathfont{#1}\blueneoh\noindent% Let $ (x,y) \in \symbb{R} \times \symbb{R} $ such that $ \sqrt{x^2 + y^2} \leq \varepsilon $.\par\bigskip} \begin{document} \testtext{TeX Gyre Bonum Math} \testtext{TeX Gyre DejaVu Math} \testtext{TeX Gyre Pagella Math} \testtext{TeX Gyre Schola Math} \testtext{TeX Gyre Termes Math} \testtext{latinmodern-math} \end{document}
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  • Nice demo, but really ISO for maths? Does not resonate with me. Commented Feb 15, 2022 at 16:38
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Change the \setmainfont command to \setmainfont{Times New Roman}. That sets the text font.

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