For a wordpress post, I can't use the txfonts package for things like:
\ointctrclockwise
How can I format this manually?
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Peeter Joot
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2 Answers
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According to WordPress' LaTeX support the following packages are loaded:
amsmathamsfontsamssymb
A poor man's solution could be for a \displaystyle version:
\documentclass{article}
\usepackage{amssymb}
\begin{document}
\[
\mathop{\rlap{$\mkern5.5mu\circlearrowright$}\int_0^\infty}
=
\mathop{\rlap{$\mkern5.5mu\circlearrowright$}\int\limits_0^\infty}
\]
\end{document}
A \textstyle version:
\documentclass{article}
\usepackage{amssymb}
\begin{document}
\[
\mathop{\rlap{$\vcenter{\hbox{$\scriptstyle\circlearrowright$}}$}{\textstyle\int_{\,0}^\infty}}
=
\mathop{\rlap{$\vcenter{\hbox{$\scriptstyle\circlearrowright$}}$}{\textstyle\int\limits_{0}^{\hbox to 0pt{\hss$\scriptstyle\infty$\hss}}}}
\]
\end{document}
Remarks:
\vcenteris used to center\circlearrowrightvertically around the math axis.\hbox to 0pt{\hss ... \hss}is needed for longer sub-/superscripts to ignore their width.In the
\nolimitscase, the subscript is moved a little to the right to avoid a collision with the circle.
Heiko Oberdiek
- 271,626
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Is there a way to do this without the embedded $ markers? Those end the latex context in wordpress. – Peeter Joot May 16 '14 at 18:45
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thanks, \mathop{\rlap{\ensuremath{\mkern3.5mu\circlearrowright}}\int} appears to work (although the \int is very short). – Peeter Joot May 16 '14 at 19:10
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If I understood the question you need the counterclockwise orientation. But \circlearrowleft looks uggly because the integral sign is slanted. – wipet May 17 '14 at 02:37
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I wanted both, and they both look ugly ... that's why I always post a pdf version of each blog post. – Peeter Joot May 17 '14 at 14:28
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2
My suggestion is to compose the character from bold variant of \wedge and normal \oint. The following code was tuned with AMS math fonts and size 10pt. If you are using different size, then you need to edit the dimensions in the code.
\font\f=cmbsy7 at2.5pt
\def\ointctrclockwise{\mathop
{\oint \kern-4.46pt\raise1.8pt\hbox{%
\rlap{\f\char"5E}\kern.1pt\rlap{\f\char"5E}}}\limits}
The result:
wipet
- 74,238
WordPressand itsLaTeXsupport, but can you use packages at all? How aboutpxfonts? – May 16 '14 at 17:42https://en.wikipedia.org/wiki/Stokes'_theorem
which uses the rather ambiguous \oint in places that an orientation is implied.
– Peeter Joot May 16 '14 at 17:50I suppose that if I did that, I'd be able to add extra packages, including my own, and could eliminate this problem directly.
– Peeter Joot May 16 '14 at 21:30