# Small script letter 'f'

I am desperately trying to find the following 'script f' glyph (see below) to display on LaTeX but have been failing.

Which CTAN package should I install to get this character in math mode??

Many thanks!

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Perhaps not really the same, but this could work:

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{amsmath,graphicx}
\usepackage{calligra}
\newcommand{\fancyf}{%
\mkern-4mu
\text{%
\scalebox{1}[.8]{%
\rotatebox[origin=c]{20}{\fontfamily{calligra}\selectfont f}
}%
}%
\mkern-4mu
}

\begin{document}
The function $\fancyf_l(p)$
\end{document}


If you want to use XeLaTeX or LuaLaTeX, then

\documentclass{article}
\usepackage{unicode-math}
\setmathfont[range=\mathscr]{XITS Math}
\begin{document}
The function $\mathscr{f}_l(p)$
\end{document}


will produce

With Asana Math instead of XITS Math you get

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It looks like you're aiming to use a Times (New) Roman text and math font that features a script-style lowercase-f symbol. One way to achieve this look is to use the MathTime Professional 2 Fonts package, along with a package such as times that provides a Times Roman text font. (An alernative to the times package is newtxtext.)

Note that the full mtpro2 package isn't free of charge, and this thus not available from the CTAN. However, it's priced quite reasonably, especially when compared with some other packages that provide math fonts.

\documentclass{report}
\usepackage[T1]{fontenc}
\usepackage{times}           % text font
\usepackage[mtpscr]{mtpro2}  % math font
\begin{document}
function $\mathscr{f}_l(p)$
\end{document}

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