# Looking for stylized H-symbol

I'm wondering if LaTeX knows the following symbol (sorry for the hand-drawing, I didn't even find it online once):

It's kind of a stylized H letter that is sometimes used to denote the Hilbert Transform. I'm aware that the Hilbert Transform is usually notated differently, but I need exactly that symbol, if available.

I checked detexify and also the comprehensive LaTeX symbol list, at least the mathematical parts and found nothing.

Edit: It is different from the calligraphic H (\mathcal{H}) which looks like this here

• It's the calligraphic H: \mathcal{H} – René B. Christensen Nov 13 '14 at 17:14
• No, Calligraphic H has no "loops" on bottom left and top right. See edited post – jan Nov 13 '14 at 17:21
• The short (and not very helpful) answer is: You can create it using METAFONT. (Not that I know how to use METAFONT myself.) – Svend Tveskæg Nov 13 '14 at 17:25
• Look at mathalfa package documentation. – Manuel Nov 13 '14 at 17:29
• That looks like the German cursive I learned. Probably not that much help though. – Juri Robl Nov 13 '14 at 17:31

## 3 Answers

The H produced by the \mathscr macro of the MathTime Pro 2 Professional font package -- note that it's not free of charge -- may (or may not...) be what you're looking for:

\documentclass{article}
\usepackage[mtpscr]{mtpro2} % http://www.pctex.com/mtpro2.html
\begin{document}
$\mathscr{H}$
\end{document}


Many more possibilities present themselves if you're willing and able to use LuaLaTeX and/or XeLaTeX and the unicode-math package, as several modern math Opentype fonts feature a math script alphabet. Here are four more possibilities; the last one (from TeX Gyre Pagella Math) may be of particular interest to you:

% !TEX TS-program = lualatex
\documentclass{article}
\usepackage{unicode-math}
\setmathfont[version=XITS]{XITS Math}
\setmathfont[version=Asana]{Asana Math}
\setmathfont[version=Pagella]{TeX Gyre Pagella Math}
\setmathfont[version=Termes]{TeX Gyre Termes Math}
\begin{document}
\mathversion{XITS}    $\mathscr{H}$ \quad
\mathversion{Asana}   $\mathscr{H}$ \quad
\mathversion{Termes}  $\mathscr{H}$ \quad
\mathversion{Pagella} $\mathscr{H}$ \quad
\end{document}

• I was just about to add the same thing to my answer :) You may wish to add the TeX Gyre Pagella version as well. It's not as curly, but it falls in the same group. – erik Nov 13 '14 at 20:12
• @erik -- We must be mind-reading each other: I just posted an updated MWE for the Opentype math fonts that includes TeX Gyre Pagella! – Mico Nov 13 '14 at 20:21

Some more free available versions:

% arara: lualatex

\documentclass{article}
\usepackage{fontspec}

\begin{document}
Script Capital H:

{\fontspec{arialuni.ttf}\symbol{"210B}}
{\fontspec{code2000.ttf}\symbol{"210B}}
{\fontspec{dejavusans.ttf}\symbol{"210B}}
{\fontspec{freeserif.otf}\symbol{"210B}}
{\fontspec{mathcadunimath.otf}\symbol{"210B}}
{\fontspec{quivira.otf}\symbol{"210B}}
{\fontspec{symbola.ttf}\symbol{"210B}}
\end{document}


In case, you do not want to use one of the script H letters, you might want to choose one of the following which look a bit similar:

% arara: pdflatex

\documentclass{article}
\usepackage{amssymb}

\begin{document}
$\ae\varkappa\aleph$
\end{document}


You can get something very similar to what Mico showed using \mathscr{H} and mathrsfs, which is free.

\documentclass{standalone}
\usepackage{mathrsfs}
\begin{document}
$\mathscr{H}$
\end{document}