# mathscr with tikzposter?

I like to load mathrsfs in order to access supplementary letter shapes: the ones provided by mathscr are noticeably different than the ones produced by mathcal. But it doesn’t work well with tikzposter: the following document produces the warning “Font shape 'U/rsfs/m/n' in size <29.86> not available size <24.88> substituted on input line 9”, and indeed the mathscr letter appears too small.

\documentclass{tikzposter}
\usepackage{mathrsfs}

\begin{document}
\begin{columns}
\column{0.4}
\block{Test}{
$\mathcal{A}$ $\mathscr{A}$ $A$
}
\end{columns}
\end{document}


Any idea if this problem can be solved or if a replacement for mathrsfs exists for this use case? (And, mathrsfs do not provide a bold version of these letters; it would be a plus if the proposed solution also avoids this problem.)

The package rsfso provides scalable Type 1 version of RSFS fonts.

This seems to give a good result:

\documentclass{tikzposter}
\usepackage[scr]{rsfso}

\begin{document}
\begin{columns}
\column{0.4}
\block{Test}{
$\mathcal{A}$ $\mathscr{A}$ $A$
}
\end{columns}
\end{document}


@MarianG in a comment below shows how to use \pmb to fake bold math

• Even better results can be obtained by loading the amsbsy package and using $\pmb{\mathscr{A}}$. Jun 10, 2019 at 19:17
• Great. Note that (as the manual explains) rsfso is not exactly the same font as mathrsfs: it is less slanted. (But this solves my problem adequately.) Jun 11, 2019 at 8:53
• @MarianG. -- \pmb creates a "bold" version of a glyph by overprinting three images slightly offset from one another. This is hardly optimal, especially if it's going to be enlarged such as on a slide; if an alternate method is available, it's really preferable. Jun 11, 2019 at 13:31
• @barbarabeeton: You are right. Enlarged version can be annoying. Jun 11, 2019 at 15:55