[texhax] Hacking \circleddash

[Barbara Beeton]

might i suggest the ams symbol \varnothing, rotated by
45 degrees using the \rotatebox facility of the
graphic[s|x] package.  there's an example of using this
tool for a slightly different but related purpose in
the ams author faq:
    http://www.ams.org/authors/author-faq.html
look for the term "rotate".
							-- bb

---------- Original message ----------
Date: Thu, 01 Jul 2004 11:48:39 +0100
From: John Simmie <john.simmie at nuigalway.ie>
To: texhax at tug.org
Subject: [texhax] Hacking \circleddash

My attempt to hack a 'standard state' symbol which looks like a circle with
a horizontal line thru it
it would only ever be used as a superscript in math mode
is not great, even downright poor ... see \notzero below

ideally a hack of the AMS symbol \circleddash with a smaller circle and/or
a longer line
would fit the bill.  The closest I have found in the Comprehensive LaTeX
Symbol List
is \minuso in the stmaryrd package which I do not want to use ...

So how does one redefine \circleddash to suit?
---------------------------------------------------------------------------
\def\notzero{{\mathchar'174\mkern-13mu 0}}

\begin{document}

\begin{equation}
  H^{\notzero}_T = H^{\notzero}_r + \int^T_r C^{\notzero}_P \; dT
\end{equation}

$$ \circleddash $$
----------------------------------------------------------------------------


                Dr. John M. Simmie
Chemistry Department & Environmental Change Institute
    National University of Ireland, Galway::Ireland