TeX Gyre Pagella Math Integral sign much too small

Question

I am writing my thesis and I use the TeX Gyre Pagella Math fonts, but I have noticed that the integral sign is much too small compared to fractions.

as you can see in the above image. I am using LuaLaTeX.

Is there any way to make the integral sign a more sensible size?

A minimal example:

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{TeX Gyre Pagella Math Regular}

\begin{document}
    \begin{equation}
    f(a) = \frac{1}{2\pi i}\int_\gamma \frac{f(z)}{z-a}\mathrm d z
    \end{equation}
\end{document}

Thanks in advance!

Could we please see a full minimal example, so others can test — daleif, May 08 '19 at 21:01
You can also try Asana Math, which also bases its letters on Palatino. — Davislor, May 09 '19 at 07:55
All tex gyre math fonts have this problem, so I never use them. Maybe they should build a new release. — Firestar-Reimu, Oct 08 '23 at 06:26

score 9 · Accepted Answer · answered May 09 '19 at 00:08

9

Simply adjust the DisplayOperatorMinHeight font parameter. That also indicates that the font is broken.

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{TeX Gyre Pagella Math}
\everydisplay{\Umathoperatorsize\displaystyle=5ex}
\begin{document}

\[\int_\gamma\frac{f(x)}{z-a}\]

\end{document}

answered May 09 '19 at 00:08

Henri Menke

109,596

1

Is there a way to selectively enlarge the integral sign in some equations only using your method? – bonanza Mar 10 '20 at 17:28
Undefined control sequence. <inserted text> \Umathoperatorsize on xelatex – Firestar-Reimu May 07 '22 at 16:36
@1900011604 Yes. Did you read the question? It's even tagged with [tag:luatex]. – Henri Menke May 08 '22 at 14:17
Thanks! On xelatex here, same problem. TeX Gyre *** Math Integral sign all much too small – Firestar-Reimu May 09 '22 at 01:24

David Carlisle · Answer 2 · 2019-05-08T21:24:57.670

5

with xelatex you get

but with lualatex you get

from

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{TeX Gyre Pagella Math}
\setmathfont{TeX Gyre Pagella Math}[range=\int,Scale=2]


\begin{document}

\[\int_\gamma\frac{f(x)}{z-a}\]

\end{document}

I'm not sure if the difference is in unicode-math or the underlying luatex math rendering, the scaled font for \int has caused the math parameters used for fraction spacing (and other things) to be scaled. I'll ping Will...

as Ulrike points out you can reset the parameters with an additional mathfont setting, resulting in

which doesn't produce quite the result xetex does but usable.

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{TeX Gyre Pagella Math}
\setmathfont{TeX Gyre Pagella Math}[range=\int,Scale=2]
\setmathfont{TeX Gyre Pagella Math}[range=\sum]


\begin{document}

\[\int_\gamma\frac{f(x)}{z-a}\]

\end{document}

edited May 08 '19 at 21:24

answered May 08 '19 at 21:15

David Carlisle

757,742

a scale of 2 is too big in any case, but used to magnify the effect here. – David Carlisle May 08 '19 at 21:17
The last math font sets the math fontdimens etc, so add e.g. \setmathfont{TeX Gyre Pagella Math}[range=\sum] as last entry. – Ulrike Fischer May 08 '19 at 21:18
@UlrikeFischer ah I tried setting the whole thing again but that undid the scale... – David Carlisle May 08 '19 at 21:19
@UlrikeFischer still doesn't get it quite right, I'll add an image – David Carlisle May 08 '19 at 21:23
I can stretch the integral with \Uleft\Udelimiter "0 "0 "00222B (and a accompaigning \Uright. after the frac), but the subscript is at the wrong position. – Ulrike Fischer May 08 '19 at 21:30
With Scale=2 the font weight is a bit over-exaggerated. – Henri Menke May 09 '19 at 00:10
@HenriMenke unusably distorted might be a more accurate way to describe it, with xetex you might get away with 1.2 though. – David Carlisle May 09 '19 at 00:18
Are you familiar with a place to report bugs with the TeX Gyre fonts? – msx May 09 '19 at 10:01
2

@msx the project is based here http://www.gust.org.pl/projects/e-foundry/tg-math/index_html but I'm not sure of the preferred reporting mechanism – David Carlisle May 09 '19 at 10:05

Ulrike Fischer · Answer 3 · 2019-05-08T22:20:26.793

5

\Uhextensible seems to work:

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{TeX Gyre Pagella Math}


\begin{document}
\[\int _\gamma\frac{f(x)}{z-a}\]

\[ \Uhextensible width 2ex "0 "00222B_\gamma\frac{f(x)}{z-a}\]

\end{document}

But I have no idea why and which width is sensible.

After a bit digging in the context code I found also an (undocumented) \Uvextensible which looks more sensible:

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{TeX Gyre Pagella Math}


\begin{document}
\[\int _\gamma\frac{f(x)}{z-a}\]

\[ \mathop{\Uvextensible height 15pt depth 15pt exact axis\Udelimiter "0 "0 "222B}\nolimits_\gamma\frac{f(x)}{z-a}\]

\end{document}

edited May 08 '19 at 22:20

answered May 08 '19 at 21:42

Ulrike Fischer

327,261

1

The subscript position is wrong. – Henri Menke May 09 '19 at 00:09
@HenriMenke I'm not quite happy with it either. The code in context (\autointegral) forces \limits with the comment that "\nolimits is difficult because of kerning problems". But simply making the integral always large doesn't look good either too. – Ulrike Fischer May 09 '19 at 08:30

user187802 · Answer 4 · 2022-10-15T14:58:50.660

0

The following takes the integrals from libertinus math:

\documentclass{article}
\usepackage[libertinus]{pagella-otf}
\begin{document}
[
    f(a) = \frac{1}{2\pi i}\int_\gamma \frac{f(z)}{z-a}\mathrm d z
]
the old behaviour:
\setmathfont{texgyrepagella-math.otf}
[
f(a) = \frac{1}{2\pi i}\int_\gamma \frac{f(z)}{z-a}\mathrm d z
]
\end{document}

edited Oct 15 '22 at 14:58

answered Oct 15 '22 at 08:13

user187802

16,850

1

Hum… I get Error: Unknown option libertinus for package pagella-otf. This option is not mentioned in the pagella-otf documentation. – Daniel Flipo Oct 15 '22 at 11:03
you need version 0.02: https://ctan.org/tex-archive/fonts/pagella-otf I suppose it is not mirrored on all machines, hopefully for tomorrow – user187802 Oct 15 '22 at 14:58

TeX Gyre Pagella Math Integral sign much too small

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