# [Tex/LaTex] Word under text

math-modetext;

Im trying to create the following:

However the different methods I tried didnt work to place the text under the word "Sup".

Thank you

Here is an example of what I got:

Use \sup to generate "sup" in upright lettering. The \sup macro can take a "subscript" argument, whose default position depends on the math mode. In inline-style math mode, the argument is placed to the right of and below "sup"; in display-style math mode, the argument is placed below (and centered) "sup". These default positions can be overridden by inserting \limits and \nolimits directives, respectively, immediately after \sup.

\documentclass{article}
\begin{document}
% text-style math, default
$J^*(y_0,t_0)=\sup_{\Vert\xi\Vert=1}(\dots)$

\bigskip
% display-style math, default
$\displaystyle J^*(y_0,t_0)=\sup_{\Vert\xi\Vert=1}(\dots)$

\medskip
% text-style math, override default with \limits
$J^*(y_0,t_0)=\sup\limits_{\Vert\xi\Vert=1}(\dots)$

\medskip
% display-style math, override default with \nolimits
$\displaystyle J^*(y_0,t_0)=\sup\nolimits_{\Vert\xi\Vert=1}(\dots)$
\end{document}