Is it possible to replace the \mathbbm letters with less grainy ones?
This is just to honorably mention the dsfont
package.
\documentclass{article}
\usepackage{bbm}
\usepackage{dsfont}
\usepackage{amsfonts}
\begin{document}
\begin{tabular}{lll}
\verb|\usepackage{bbm}| & \verb|\mathbbm| & $\mathbbm{A}$ \\
\verb|\usepackage{dsfont}| & \verb|\mathds| & $\mathds{A}$ \\
\verb|\usepackage{amsfonts}| & \verb|\mathbb| & $\mathbb{A}$ \\
\end{tabular}
\end{document}
the bbm fonts are bitmap fonts generated by MetaFont. If other double struck fonts are suitable many are available in scalable formats eg \mathbb
font from the AMS but if you really want \mathbb
then
Your log will show:
.texlive2019/texmf-var/fonts/pk/ljfour/public/bbm/bbm10.600pk
That is a 600dp bitmap tweaked for an HP laserjet 4 printer (which you are probably not using:-)
If you modify the file to
\documentclass{report}
\usepackage{bbm}
\pdfpkresolution=1200
\begin{document}
$\mathbbm{A}$
\end{document}
The first time you run it metafont will fire up and make a higher resolution bitmap
.texlive2019/texmf-var/fonts/pk/ultre/public/bbm/bbm10.1200pk
You can only choose resolutions that are in modes.mf
/usr/local/texlive/2019/texmf-dist/metafont/misc/modes.mf
so if you need really high resolution you may need to supply an additional mode definition.
You can load many different \mathbb
alphabets using the mathalpha
package, or if you can use LuaLaTeX or XeLaTeX, unicode-math
. All are outline, rather than bitmap, fonts.
After loading the package and your fonts of choice, write \mathbb{A}
.