I would like to rescale \check symbol but not for the whole document. For example,
\documentclass{article}
\usepackage{mathtools}
\usepackage{asana-math}
\begin{document}
this is a normal \check symbol $\check{u}$, but in $\check{U}$
I want the check symbol to be larger
\end{document}


\widehat– Yorgos Nov 16 '16 at 19:31