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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!

Script f sample

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2 Answers 2

up vote 24 down vote accepted

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}

enter image description here

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

enter image description here

With Asana Math instead of XITS Math you get

enter image description here

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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.

enter image description here

\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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