[texhax] Hacking \circleddash

[Juan Mari Alberdi]

What about these ones? I'm afraid I've used 'stmaryrd' too.

Juan Alberdi

\documentclass{article}
\usepackage{stmaryrd}

\def\ra#1{\raise1.25pt\hbox{#1}}
\def\ststa{\ra \_\mkern-10.5mu\, \mathnormal 0}

\def\ba#1{\raise-.7pt\hbox{#1}}
\def\ststb{\ba -\mkern-11mu\, \mathrm o}

\begin{document}


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

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

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

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


\end{document}

Juan

John Simmie wrote:

> 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
>
>
>------------------------------------------------------------------------
>
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