An undefined control sequence is shown

Question

An undefined control sequence is shown in the line.

\centerline{\LARGE{$\bm{\mathfrak{ Dedicated \ to}}$}}

Hi, welcome. If you look at the error message in the log, there will be a line break somewhere in that piece of code. The undefined command is the one just before that line break. — Torbjørn T., Apr 23 '22 at 10:45
Compiles without problems with \usepackage{amssymb,bm} for me. — Henri Menke, Apr 23 '22 at 10:51
Questions seeking debugging help (“why isn't this code working?”) must include the desired behavior, a specific problem or error and the shortest code necessary to reproduce it in the question itself. Questions without a clear problem statement are not useful to other readers. See minimal working example (MWE). — Henri Menke, Apr 23 '22 at 10:51
@Henri Menke Yes! Its now working with \usepackage{amssymb,bm}. Thank you Sir! — user268851, Apr 23 '22 at 10:57
Well, using \mathfrak for text is not the best idea, in my opinion. — egreg, Apr 23 '22 at 12:46

score 1 · Answer 1 · answered Apr 23 '22 at 12:56

You need to load amsfonts for \mathfrak and bm for \bm, but you can avoid \bm:

\documentclass{article}
\usepackage{amsfonts}
\begin{document}
\begin{center}
\usefont{U}{euf}{b}{n}\LARGE
Dedicated to
\end{center}
\end{document}

Explanation: the \mathfrak declaration uses the euf font family with U encoding because of

    \DeclareMathAlphabet{\mathfrak}{U}{euf}{m}{n}
    \SetMathAlphabet{\mathfrak}{bold}{U}{euf}{b}{n}

in amsfonts.sty.

You can get different styles of Fraktur or similar scripts with yfonts.

\documentclass{article}
\usepackage{yfonts}
\begin{document}
\begin{center}
\frakfamily\LARGE
Dedicated to
\end{center}
\begin{center}
\gothfamily\LARGE
Dedicated to
\end{center}
\begin{center}
\swabfamily\LARGE
Dedicated to
\end{center}
\end{document}

An undefined control sequence is shown

1 Answers1