9

This question already has an answer here:

I've searched the usual places (http://tug.ctan.org/info/symbols/comprehensive/symbols-a4.pdf, http://ctan.math.utah.edu/ctan/tex-archive/macros/latex/contrib/unicode-math/unimath-symbols.pdf, DeTeXify) and can't seem to find this character, which surprises me. I'd like a combination of \oplus and \otimes. More precisely, I'd like a circle subdivided into eight 45° sectors. (Sort of like \circledast but with the arms of the asterisk extending all the way out to the edge of the circle.)

Does such a symbol exist? If not, how can I create one?

marked as duplicate by Werner, Fran, Zarko, Andrew Swann, user36296 Feb 22 '17 at 9:43

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10

Easy \ooalign. ;-) See \subseteq + \circ as a single symbol ("open subset") for a quick course on it.

\documentclass{article}

\makeatletter
\DeclareRobustCommand{\oplustimes}{%
  \mathbin{\mathpalette\o@plus@times\relax}%
}
\newcommand{\o@plus@times}[2]{%
  \ooalign{$\m@th#1\oplus$\cr$\m@th#1\otimes$\cr}%
}
\makeatother

\begin{document}

$X\oplustimes Y_{a\oplustimes b}$

\end{document}

enter image description here

  • +1 for not having forgotten, this time, the style argument… :o) – GuM Feb 21 '17 at 23:38
  • 3
    I think the symbol should be called, simply, \pizzapie. – Steven B. Segletes Feb 22 '17 at 1:52
7

@Egreg did a great job reinventing the wheel ;-). An alternative:

\documentclass{article}

\usepackage{linearb}

\newcommand{\ugh}{\mathbin{\textlinb{\BPwheel}}}
\newcommand{\sugh}{\mathbin{\textlinb{\scriptsize\BPwheel}}}

\begin{document}

$X \ugh Y_{a \sugh b}$

\end{document}
  • 1
    It is in the comprehensive latex symbols list...... – JPi Feb 22 '17 at 2:25
  • 1
    +1. You forgot to make \ugh be of type \mathbin, though. ;-) – Mico Feb 22 '17 at 5:19

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