Is it possible to get the LaTeX command for special symbol, like J calligraphic with bar in the middle

Question

how to make the latex command for this symbol

Answer 1

I believe that what you call a "special J with bar in the middle" is actually an "F".

% !TEX TS-program = pdflatex
\documentclass{article}
\usepackage[scr=esstix]{mathalpha}
\begin{document}
$\mathscr{E \quad F \quad H \quad M}$ 
\end{document}