Path: utzoo!utgpu!news-server.csri.toronto.edu!csri.toronto.edu!norvell
Newsgroups: comp.text.tex
From: norvell@csri.toronto.edu (Theo Norvell)
Subject: Re: Equation numbering in Latex
Message-ID: <1990Nov7.235751.5038@jarvis.csri.toronto.edu>
Organization: CSRI, University of Toronto
References: <1990Nov7.101013.29399@agate.berkeley.edu>
Date: 8 Nov 90 04:57:51 GMT
Lines: 31

In article <1990Nov7.101013.29399@agate.berkeley.edu>
	link@stew.ssl.berkeley.edu (Richard Link) writes:
>I need to number equations in an appendix as (A1), (A2), etc.,
>where the () are right-justified in the usual manner.
>

%%%%%%%%%%%%%%%%%%% letteredEquations.sty %%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\AlphNum}[2]{\prtAlphNum{\@nameuse{c@#1}}#2}

\newcommand{\prtAlphNum}[2]{(#2\number #1)}

\newcounter{eqnSaver}

\def\eqNum#1#2{\setcounter{eqnSaver}{\value{equation}}%
\setcounter{equation}{#2}%
\renewcommand{\theequation}{\AlphNum{equation}#1}}

\def\eqNormal{\setcounter{equation}{\value{eqnSaver}}%
\renewcommand{\theequation}{\arabic{equation}}}
%%%%%%%%%%%%%%%%%%% End Hack %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Use as follows:

\eqNum{A}{0}% Switch to (Ai) starting with 0

... some equations ...

\eqNorm % Back to normal


Theo Norvell         norvell@csri.utoronto.ca     norvell@csri.toronto.edu