%%
%% The LaTeX Companion, 3ed
%%
%% Example 12-3-9 on page II-242 in "Some peculiarities of the Euler fonts".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{183.0pt}
%StartShownPreambleCommands
\usepackage{tgpagella,eulervm,eufrak}
\DeclareMathAccent\varhat{\mathalpha}{symbols}{222}
%StopShownPreambleCommands

\begin{document}
\Large $ \hat x \neq \varhat x $ and
$ \hat \mathfrak{K} \neq \varhat \mathfrak{K} $
\end{document}