How to type sheaf hom

Question

I want to type sheaf hom into LaTeX how can I do it? In Hartsthorne it appears as something like $\mathscr{H}om$ but I don't think this is right. For example, because the space between the 'H' and 'o' is too big. What can I do?

you might want to add a picture of what you are trying to achieve. Otherwise people have to look up you keywords first. — papabravo, Oct 30 '13 at 12:24
Ravi Vakil uses a nice-looking sheaf hom in The Rising Sea (paragraph 2.3.C of the November 18, 2017 draft linked here). The source code doesn't seem to be publicly available, though. — Vectornaut, Jul 01 '20 at 10:18

score 8 · Answer 1 · answered Jan 30 '14 at 16:44

8

An ugly hack, but it looks pretty good:

\documentclass{article}
\usepackage{amsmath,calligra,mathrsfs}
\DeclareMathOperator{\Hom}{\mathscr{H}\text{\kern -3pt {\calligra\large om}}\,}

\begin{document}
$\Hom(X,Y)$
\end{document}

The result:

sheaf-hom

answered Jan 30 '14 at 16:44

Daniel Miller

285
3
9

score 4 · Accepted Answer · answered Oct 30 '13 at 12:34

4

\newcommand*{\sheafhom}{\mathrm{H}\kern -.5pt om}

answered Oct 30 '13 at 12:34

Ruben

13,448

Although, note, the H is in Hartshorne a mathscript letter, so one should use \mathscr{H} and one of the many fine mathscr packages – Alex Nelson Oct 30 '13 at 16:16
@AlexNelson, do you think that \mathcal could do the the job? – Ruben Oct 30 '13 at 16:52

score 0 · Answer 3 · answered Jul 01 '20 at 10:32

This version uses the BOONDOX-calo script font. I barely notice the misaligned connecting strokes at my typical reading size.

\documentclass{article}
\usepackage{amsmath}
\usepackage{BOONDOX-calo}
\DeclareMathOperator{\SheafHom}{\mathcal{H\kern -3pt o\kern -2pt m\kern -1pt}}
\DeclareMathOperator{\Hom}{Hom}
\begin{document}
the sheaf $\SheafHom(A, B)$ and the set $\Hom(A, B)$
\end{document}

Output:

How to type sheaf hom

3 Answers3