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<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="generator" content="Docutils 0.12: http://docutils.sourceforge.net/" />
<title>alphabeta: Greek symbols in text and math</title>
<meta name="copyright" content="© 2010 Günter Milde" />
<link rel="stylesheet" href="../../../../../Python/docutils-svn/docutils/docutils/writers/html4strict/html4css1.css" type="text/css" />
<link rel="stylesheet" href="../../../../../Python/docutils-svn/docutils/docutils/writers/html4strict/html4css2.css" type="text/css" />
</head>
<body>
<div class="document" id="alphabeta-greek-symbols-in-text-and-math">
<h1 class="title">alphabeta: Greek symbols in text and math</h1>

<dl class="docinfo">
<dt class="copyright">Copyright</dt>
<dd class="copyright">© 2010 Günter Milde</dd>
<dt>Licence</dt>
<dd><p>This work may be distributed and/or modified under the
conditions of the <a class="reference external" href="http://www.latex-project.org/lppl.txt">LaTeX Project Public License</a>, either
version&nbsp;1.3 of this license or any later version.</p>
</dd>
<dt>Identification</dt>
<dd><pre class="literal-block">\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{alphabeta}
[2013/09/11 v0.4 macros for Greek letters in text and math]
</pre>
</dd>
</dl>
<div class="abstract topic">
<p class="topic-title first">Abstract</p>
<p>Use <tt class="literal">\alpha, \beta, ...</tt> for Greek letters in text and math
mode.</p>
</div>
<dl class="docutils">
<dt>Changelog:</dt>
<dd><table class="borderless">
<colgroup>
<col width="14%" />
<col width="7%" />
<col width="79%" />
</colgroup>
<tbody>
<tr><td><p>2012-06-26</p></td>
<td><p>0.1</p></td>
<td><p>initial version</p></td>
</tr>
<tr><td><p>2013-05-03</p></td>
<td><p>0.2</p></td>
<td><p>new accent macro names with <tt class="literal">lgrxenc.def</tt> 0.7</p></td>
</tr>
<tr><td><p>2013-05-28</p></td>
<td><p>0.3</p></td>
<td><p>use <tt class="literal">lgrenc.def</tt> from greek-fontenc,</p></td>
</tr>
<tr><td><!--  -->
</td>
<td>&nbsp;</td>
<td><p>enable Unicode input in math mode.</p></td>
</tr>
<tr><td><p>2013-09-11</p></td>
<td><p>0.4</p></td>
<td><p>move to <a class="reference external" href="http://www.ctan.org/pkg/greek-fontenc">greek-fontenc</a>, support XeTeX/LuaTeX.</p></td>
</tr>
</tbody>
</table>
</dd>
</dl>
<div class="section" id="motivation">
<h1>Motivation</h1>
<p>By default, the <tt class="literal">\alpha, \beta, ...</tt> macros for Greek letters
are only valid in mathematical mode.</p>
<p>With this package, the math macros are redefined to work in both, text and
math mode, so that Greek letters can be specified with the established
command names in text, too.</p>
<p>If used together with the <tt class="literal">utf8</tt> option of <a class="reference external" href="http://www.ctan.org/pkg/inputenc">inputenc</a>, literal Unicode
characters can be used for Greek symbols in mathematical formulas.</p>
<div class="attention">
<p class="admonition-title">Attention!</p>
<p>The macros work well in any font encoding for single symbols.
However, with 8-bit TeX, the automatic font-encoding switches behind the
doors interfere with kerning between letters and replacement of
accent+character with a pre-composed character.</p>
<p>Therefore, Greek text should be written with the help of <a class="reference external" href="http://www.ctan.org/cgi-bin/ctanPackageInformation.py?id=babel">babel</a> or
<a class="reference external" href="http://www.ctan.org/pkg/polyglossia">polyglossia</a> (setting the language to <tt class="literal">greek</tt>) or wrapped in the
provided <tt class="literal">ensuregreek</tt> macro.  Using <a class="reference external" href="http://www.ctan.org/cgi-bin/ctanPackageInformation.py?id=babel">babel</a> or <a class="reference external" href="http://www.ctan.org/pkg/polyglossia">polyglossia</a> also helps
to ensure proper hyphenation.</p>
</div>
</div>
<div class="section" id="usage">
<h1>Usage</h1>
<pre class="code latex literal-block"><span class="keyword">\usepackage</span><span class="name builtin">{</span>alphabeta<span class="name builtin">}</span>
</pre>
<p>For details see <a class="reference external" href="alphabeta-test.tex">alphabeta-test.tex</a> and <a class="reference external" href="alphabeta-test.pdf">alphabeta-test.pdf</a>.</p>
</div>
<div class="section" id="implementation">
<h1>Implementation</h1>
<div class="section" id="requirements">
<h2>Requirements</h2>
<p>This package extends the <a class="reference external" href="textalpha.sty.html">textalpha</a> package:</p>
<pre class="literal-block">\RequirePackage{textalpha}
</pre>
<p><cite>textalpha</cite> depends on <a class="reference external" href="http://www.ctan.org/pkg/greek-fontenc">greek-fontenc</a> and (with 8-bit TeX) recommends
<a class="reference external" href="http://www.ctan.org/pkg/greek-inputenc">greek-inputenc</a>.</p>
<p>This package requires the <a class="reference external" href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=etex">e-TeX</a> extensions (i.e. a not too old TeX
distribution) for the <tt class="literal">\ifdefined</tt> test.</p>
<p>It uses the <tt class="literal">\TextOrMath</tt> test from the <a class="reference external" href="http://www.ctan.org/pkg/fixltx2e">fixltx2e</a> standard LaTeX
package:</p>
<pre class="literal-block">\RequirePackage{fixltx2e}
</pre>
</div>
<div class="section" id="postpone-the-re-definitions">
<h2>Postpone the re-definitions</h2>
<p>To prevent other packages overwriting the re-defined commands we postpone
the next steps until the start of the document body:</p>
<pre class="literal-block">\AtBeginDocument{
</pre>
</div>
<div class="section" id="save-math-macros">
<h2>Save math macros</h2>
<p>Provide an alias for the standard math commands:</p>
<pre class="literal-block">\let\mathGamma\Gamma
\let\mathDelta\Delta
\let\mathTheta\Theta
\let\mathLambda\Lambda
\let\mathXi\Xi
\let\mathPi\Pi
\let\mathSigma\Sigma
\let\mathUpsilon\Upsilon
\let\mathPhi\Phi
\let\mathPsi\Psi
\let\mathOmega\Omega
%
\let\mathalpha\alpha
\let\mathbeta\beta
\let\mathgamma\gamma
\let\mathdelta\delta
\let\mathepsilon\epsilon
\let\mathzeta\zeta
\let\matheta\eta
\let\maththeta\theta
\let\mathiota\iota
\let\mathkappa\kappa
\let\mathlambda\lambda
\let\mathmu\mu
\let\mathnu\nu
\let\mathxi\xi
\let\mathpi\pi
\let\mathrho\rho
\let\mathsigma\sigma
\let\mathvarsigma\varsigma
\let\mathtau\tau
\let\mathupsilon\upsilon
\let\mathphi\phi
\let\mathchi\chi
\let\mathpsi\psi
\let\mathomega\omega
% ``\digamma`` is defined by amsmath, provide a fallback
\providecommand*{\digamma}{\textit{\textdigamma}}
\let\mathdigamma\digamma
</pre>
</div>
<div class="section" id="commands-to-access-greek-letters-by-name">
<h2>Commands to access Greek letters by name</h2>
<p>For letters defined in math mode, the commands work in both, text and math.</p>
<p>Some Greek letters look identical to Latin letters and can therefore not be
used as variable symbols in math formulas. These letters are not defined in
TeX’s math mode, we provide an alias to the corrsponding <tt class="literal"><span class="pre">\text...</span></tt>
command.</p>
<pre class="literal-block">\providecommand*{\Alpha}{\textAlpha}
\providecommand*{\Beta}{\textBeta}
\renewcommand*{\Gamma}{\TextOrMath{\textGamma}{\mathGamma}}
\renewcommand*{\Delta}{\TextOrMath{\textDelta}{\mathDelta}}
\providecommand*{\Epsilon}{\textEpsilon}
\providecommand*{\Zeta}{\textZeta}
\providecommand*{\Eta}{\textEta}
\renewcommand*{\Theta}{\TextOrMath{\textTheta}{\mathTheta}}
\providecommand*{\Iota}{\textIota}
\providecommand*{\Kappa}{\textKappa}
\renewcommand*{\Lambda}{\TextOrMath{\textLambda}{\mathLambda}}
\providecommand*{\Mu}{\textMu}
\providecommand*{\Nu}{\textNu}
\renewcommand*{\Xi}{\TextOrMath{\textXi}{\mathXi}}
\providecommand*{\Omicron}{\textOmicron}
\renewcommand*{\Pi}{\TextOrMath{\textPi}{\mathPi}}
\providecommand*{\Rho}{\textRho}
\renewcommand*{\Sigma}{\TextOrMath{\textSigma}{\mathSigma}}
\providecommand*{\Tau}{\textTau}
\renewcommand*{\Upsilon}{\TextOrMath{\textUpsilon}{\mathUpsilon}}
\renewcommand*{\Phi}{\TextOrMath{\textPhi}{\mathPhi}}
\providecommand*{\Chi}{\textChi}
\renewcommand*{\Psi}{\TextOrMath{\textPsi}{\mathPsi}}
\renewcommand*{\Omega}{\TextOrMath{\textOmega}{\mathOmega}}
%
\renewcommand*{\alpha}{\TextOrMath{\textalpha}{\mathalpha}}
\renewcommand*{\beta}{\TextOrMath{\textbeta}{\mathbeta}}
\renewcommand*{\gamma}{\TextOrMath{\textgamma}{\mathgamma}}
\renewcommand*{\delta}{\TextOrMath{\textdelta}{\mathdelta}}
\renewcommand*{\epsilon}{\TextOrMath{\textepsilon}{\mathepsilon}}
\renewcommand*{\zeta}{\TextOrMath{\textzeta}{\mathzeta}}
\renewcommand*{\eta}{\TextOrMath{\texteta}{\matheta}}
\renewcommand*{\theta}{\TextOrMath{\texttheta}{\maththeta}}
\renewcommand*{\iota}{\TextOrMath{\textiota}{\mathiota}}
\renewcommand*{\kappa}{\TextOrMath{\textkappa}{\mathkappa}}
\renewcommand*{\lambda}{\TextOrMath{\textlambda}{\mathlambda}}
\renewcommand*{\mu}{\TextOrMath{\textmu}{\mathmu}}
\renewcommand*{\nu}{\TextOrMath{\textnu}{\mathnu}}
\renewcommand*{\xi}{\TextOrMath{\textxi}{\mathxi}}
\providecommand*{\omicron}{\textomicron}
\renewcommand*{\pi}{\TextOrMath{\textpi}{\mathpi}}
\renewcommand*{\rho}{\TextOrMath{\textrho}{\mathrho}}
\renewcommand*{\sigma}{\TextOrMath{\textsigma}{\mathsigma}}
\renewcommand*{\varsigma}{\TextOrMath{\textvarsigma}{\mathvarsigma}}
\providecommand*{\finalsigma}{\varsigma}
\renewcommand*{\tau}{\TextOrMath{\texttau}{\mathtau}}
\renewcommand*{\upsilon}{\TextOrMath{\textupsilon}{\mathupsilon}}
\renewcommand*{\phi}{\TextOrMath{\textphi}{\mathphi}}
\renewcommand*{\chi}{\TextOrMath{\textchi}{\mathchi}}
\renewcommand*{\psi}{\TextOrMath{\textpsi}{\mathpsi}}
\renewcommand*{\omega}{\TextOrMath{\textomega}{\mathomega}}
</pre>
<div class="section" id="archaic-letters">
<h3>Archaic letters</h3>
<pre class="literal-block">\renewcommand*{\digamma}{\TextOrMath{\textdigamma}{\mathdigamma}} % ϝ
\providecommand*{\Digamma}{\textDigamma}     % Ϝ
\providecommand*{\stigma}{\textstigma}       % ϛ
\providecommand*{\varstigma}{\textvarstigma} % stigma variant (CB.enc, teubner)
\providecommand*{\koppa}{\textkoppa}         % ϟ (greek small letter koppa)
\providecommand*{\qoppa}{\textqoppa}         % ϙ (archaic koppa)
\providecommand*{\Qoppa}{\textQoppa}         % Ϙ (archaic Koppa)
\providecommand*{\Stigma}{\textStigma}       % Ϛ (in some fonts ϹΤ ligature)
\providecommand*{\Sampi}{\textSampi}         % Ϡ
\providecommand*{\sampi}{\textsampi}         % ϡ
</pre>
</div>
</div>
<div class="section" id="textcompositecommands-for-the-generic-macros">
<h2>TextCompositeCommands for the generic macros</h2>
<p>The NFSS TextComposite mechanism looks for the next token without expanding
it. In order to let compositions like <tt class="literal"><span class="pre">\ensuregreek{\'\Alpha}</span></tt> or
<tt class="literal"><span class="pre">\ensuregreek{\&gt;&quot;\alpha}</span></tt> work as expected we define TextComposites with the
<cite>letter name commands</cite>. (Composition only works if the active font encoding
is LGR).</p>
<pre class="literal-block">\ifdefined\XeTeXrevision
  \input{alphabeta-euenc.def}
\else\ifdefined\luatexversion
  \input{alphabeta-euenc.def}
\else
  \DeclareTextComposite{\accvaria}{LGR}{\alpha}{128}
  \DeclareTextComposite{\accdasia}{LGR}{\alpha}{129}
  \DeclareTextComposite{\accpsili}{LGR}{\alpha}{130}
  \DeclareTextComposite{\accdasiavaria}{LGR}{\alpha}{131}
  \DeclareTextComposite{\acctonos}{LGR}{\alpha}{136}
  \DeclareTextComposite{\accdasiaoxia}{LGR}{\alpha}{137}
  \DeclareTextComposite{\accpsilioxia}{LGR}{\alpha}{138}
  \DeclareTextComposite{\accpsilivaria}{LGR}{\alpha}{139}
  \DeclareTextComposite{\accperispomeni}{LGR}{\alpha}{144}
  \DeclareTextComposite{\accdasiaperispomeni}{LGR}{\alpha}{145}
  \DeclareTextComposite{\accpsiliperispomeni}{LGR}{\alpha}{146}
  \DeclareTextComposite{\accvaria}{LGR}{\eta}{152}
  \DeclareTextComposite{\accdasia}{LGR}{\eta}{153}
  \DeclareTextComposite{\accpsili}{LGR}{\eta}{154}
  \DeclareTextComposite{\acctonos}{LGR}{\eta}{160}
  \DeclareTextComposite{\accdasiaoxia}{LGR}{\eta}{161}
  \DeclareTextComposite{\accpsilioxia}{LGR}{\eta}{162}
  \DeclareTextComposite{\accdasiavaria}{LGR}{\eta}{163}
  \DeclareTextComposite{\accperispomeni}{LGR}{\eta}{168}
  \DeclareTextComposite{\accdasiaperispomeni}{LGR}{\eta}{169}
  \DeclareTextComposite{\accpsiliperispomeni}{LGR}{\eta}{170}
  \DeclareTextComposite{\accpsilivaria}{LGR}{\eta}{171}
  \DeclareTextComposite{\accvaria}{LGR}{\omega}{176}
  \DeclareTextComposite{\accdasia}{LGR}{\omega}{177}
  \DeclareTextComposite{\accpsili}{LGR}{\omega}{178}
  \DeclareTextComposite{\accdasiavaria}{LGR}{\omega}{179}
  \DeclareTextComposite{\acctonos}{LGR}{\omega}{184}
  \DeclareTextComposite{\accdasiaoxia}{LGR}{\omega}{185}
  \DeclareTextComposite{\accpsilioxia}{LGR}{\omega}{186}
  \DeclareTextComposite{\accpsilivaria}{LGR}{\omega}{187}
  \DeclareTextComposite{\accperispomeni}{LGR}{\omega}{192}
  \DeclareTextComposite{\accdasiaperispomeni}{LGR}{\omega}{193}
  \DeclareTextComposite{\accpsiliperispomeni}{LGR}{\omega}{194}
  \DeclareTextComposite{\accvaria}{LGR}{\iota}{200}
  \DeclareTextComposite{\accdasia}{LGR}{\iota}{201}
  \DeclareTextComposite{\accpsili}{LGR}{\iota}{202}
  \DeclareTextComposite{\accdasiavaria}{LGR}{\iota}{203}
  \DeclareTextComposite{\acctonos}{LGR}{\iota}{208}
  \DeclareTextComposite{\accdasiaoxia}{LGR}{\iota}{209}
  \DeclareTextComposite{\accpsilioxia}{LGR}{\iota}{210}
  \DeclareTextComposite{\accpsilivaria}{LGR}{\iota}{211}
  \DeclareTextComposite{\accperispomeni}{LGR}{\iota}{216}
  \DeclareTextComposite{\accdasiaperispomeni}{LGR}{\iota}{217}
  \DeclareTextComposite{\accpsiliperispomeni}{LGR}{\iota}{218}
  \DeclareTextComposite{\accdialytika}{LGR}{\iota}{240}
  \DeclareTextComposite{\accdialytikavaria}{LGR}{\iota}{241}
  \DeclareTextComposite{\accdialytikatonos}{LGR}{\iota}{242}
  \DeclareTextComposite{\accdialytikaperispomeni}{LGR}{\iota}{243}
  \DeclareTextComposite{\accvaria}{LGR}{\upsilon}{204}
  \DeclareTextComposite{\accdasia}{LGR}{\upsilon}{205}
  \DeclareTextComposite{\accpsili}{LGR}{\upsilon}{206}
  \DeclareTextComposite{\accdasiavaria}{LGR}{\upsilon}{207}
  \DeclareTextComposite{\acctonos}{LGR}{\upsilon}{212}
  \DeclareTextComposite{\accdasiaoxia}{LGR}{\upsilon}{213}
  \DeclareTextComposite{\accpsilioxia}{LGR}{\upsilon}{214}
  \DeclareTextComposite{\accpsilivaria}{LGR}{\upsilon}{215}
  \DeclareTextComposite{\accperispomeni}{LGR}{\upsilon}{220}
  \DeclareTextComposite{\accdasiaperispomeni}{LGR}{\upsilon}{221}
  \DeclareTextComposite{\accpsiliperispomeni}{LGR}{\upsilon}{222}
  \DeclareTextComposite{\accdialytika}{LGR}{\upsilon}{244}
  \DeclareTextComposite{\accdialytikavaria}{LGR}{\upsilon}{245}
  \DeclareTextComposite{\accdialytikatonos}{LGR}{\upsilon}{246}
  \DeclareTextComposite{\accdialytikaperispomeni}{LGR}{\upsilon}{247}
  \DeclareTextComposite{\accvaria}{LGR}{\epsilon}{224}
  \DeclareTextComposite{\accdasia}{LGR}{\epsilon}{225}
  \DeclareTextComposite{\accpsili}{LGR}{\epsilon}{226}
  \DeclareTextComposite{\accdasiavaria}{LGR}{\epsilon}{227}
  \DeclareTextComposite{\acctonos}{LGR}{\epsilon}{232}
  \DeclareTextComposite{\accdasiaoxia}{LGR}{\epsilon}{233}
  \DeclareTextComposite{\accpsilioxia}{LGR}{\epsilon}{234}
  \DeclareTextComposite{\accpsilivaria}{LGR}{\epsilon}{235}
  \DeclareTextComposite{\accvaria}{LGR}{\omicron}{228}
  \DeclareTextComposite{\accdasia}{LGR}{\omicron}{229}
  \DeclareTextComposite{\accpsili}{LGR}{\omicron}{230}
  \DeclareTextComposite{\accdasiavaria}{LGR}{\omicron}{231}
  \DeclareTextComposite{\acctonos}{LGR}{\omicron}{236}
  \DeclareTextComposite{\accdasiaoxia}{LGR}{\omicron}{237}
  \DeclareTextComposite{\accpsilioxia}{LGR}{\omicron}{238}
  \DeclareTextComposite{\accpsilivaria}{LGR}{\omicron}{239}
  \DeclareTextCompositeCommand{\accdasia}{LGR}{\Alpha}{&lt;A}
  \DeclareTextCompositeCommand{\accdasiavaria}{LGR}{\Alpha}{&lt;`A}
  \DeclareTextCompositeCommand{\accdasiaoxia}{LGR}{\Alpha}{&lt;'A}
  \DeclareTextCompositeCommand{\accdasiaperispomeni}{LGR}{\Alpha}{&lt;\char126A}
  \DeclareTextCompositeCommand{\accpsili}{LGR}{\Alpha}{&gt;A}
  \DeclareTextCompositeCommand{\accpsilivaria}{LGR}{\Alpha}{&gt;`A}
  \DeclareTextCompositeCommand{\accpsilioxia}{LGR}{\Alpha}{&gt;'A}
  \DeclareTextCompositeCommand{\accpsiliperispomeni}{LGR}{\Alpha}{&gt;\char126A}
  \DeclareTextCompositeCommand{\acctonos}{LGR}{\Alpha}{'A}
  \DeclareTextCompositeCommand{\accvaria}{LGR}{\Alpha}{`A}
  \DeclareTextCompositeCommand{\accdasia}{LGR}{\Epsilon}{&lt;E}
  \DeclareTextCompositeCommand{\accdasiaoxia}{LGR}{\Epsilon}{&lt;'E}
  \DeclareTextCompositeCommand{\accdasiavaria}{LGR}{\Epsilon}{&lt;`E}
  \DeclareTextCompositeCommand{\accpsili}{LGR}{\Epsilon}{&gt;E}
  \DeclareTextCompositeCommand{\accpsilioxia}{LGR}{\Epsilon}{&gt;'E}
  \DeclareTextCompositeCommand{\accpsilivaria}{LGR}{\Epsilon}{&gt;`E}
  \DeclareTextCompositeCommand{\acctonos}{LGR}{\Epsilon}{'E}
  \DeclareTextCompositeCommand{\accvaria}{LGR}{\Epsilon}{`E}
  \DeclareTextCompositeCommand{\accdasia}{LGR}{\Eta}{&lt;H}
  \DeclareTextCompositeCommand{\accdasiavaria}{LGR}{\Eta}{&lt;`H}
  \DeclareTextCompositeCommand{\accdasiaoxia}{LGR}{\Eta}{&lt;'H}
  \DeclareTextCompositeCommand{\accdasiaperispomeni}{LGR}{\Eta}{&lt;\char126H}
  \DeclareTextCompositeCommand{\accpsili}{LGR}{\Eta}{&gt;H}
  \DeclareTextCompositeCommand{\accpsilivaria}{LGR}{\Eta}{&gt;`H}
  \DeclareTextCompositeCommand{\accpsilioxia}{LGR}{\Eta}{&gt;'H}
  \DeclareTextCompositeCommand{\accpsiliperispomeni}{LGR}{\Eta}{&gt;\char126H}
  \DeclareTextCompositeCommand{\acctonos}{LGR}{\Eta}{'H}
  \DeclareTextCompositeCommand{\accvaria}{LGR}{\Eta}{`H}
  \DeclareTextCompositeCommand{\accdasia}{LGR}{\Iota}{&lt;I}
  \DeclareTextCompositeCommand{\accdasiavaria}{LGR}{\Iota}{&lt;`I}
  \DeclareTextCompositeCommand{\accdasiaoxia}{LGR}{\Iota}{&lt;'I}
  \DeclareTextCompositeCommand{\accdasiaperispomeni}{LGR}{\Iota}{&lt;\char126I}
  \DeclareTextCompositeCommand{\accpsili}{LGR}{\Iota}{&gt;I}
  \DeclareTextCompositeCommand{\accpsilivaria}{LGR}{\Iota}{&gt;`I}
  \DeclareTextCompositeCommand{\accpsilioxia}{LGR}{\Iota}{&gt;'I}
  \DeclareTextCompositeCommand{\accpsiliperispomeni}{LGR}{\Iota}{&gt;\char126I}
  \DeclareTextCompositeCommand{\acctonos}{LGR}{\Iota}{'I}
  \DeclareTextCompositeCommand{\accvaria}{LGR}{\Iota}{`I}
  \DeclareTextCompositeCommand{\accdasia}{LGR}{\Omicron}{&lt;O}
  \DeclareTextCompositeCommand{\accdasiavaria}{LGR}{\Omicron}{&lt;`O}
  \DeclareTextCompositeCommand{\accdasiaoxia}{LGR}{\Omicron}{&lt;'O}
  \DeclareTextCompositeCommand{\accpsili}{LGR}{\Omicron}{&gt;O}
  \DeclareTextCompositeCommand{\accpsilivaria}{LGR}{\Omicron}{&gt;`O}
  \DeclareTextCompositeCommand{\accpsilioxia}{LGR}{\Omicron}{&gt;'O}
  \DeclareTextCompositeCommand{\acctonos}{LGR}{\Omicron}{'O}
  \DeclareTextCompositeCommand{\accvaria}{LGR}{\Omicron}{`O}
  \DeclareTextCompositeCommand{\accdasia}{LGR}{\Upsilon}{&lt;U}
  \DeclareTextCompositeCommand{\accdasiavaria}{LGR}{\Upsilon}{&lt;`U}
  \DeclareTextCompositeCommand{\accdasiaoxia}{LGR}{\Upsilon}{&lt;'U}
  \DeclareTextCompositeCommand{\accdasiaperispomeni}{LGR}{\Upsilon}{&lt;\char126U}
  \DeclareTextCompositeCommand{\acctonos}{LGR}{\Upsilon}{'U}
  \DeclareTextCompositeCommand{\accvaria}{LGR}{\Upsilon}{`U}
  \DeclareTextCompositeCommand{\accdasia}{LGR}{\Omega}{&lt;W}
  \DeclareTextCompositeCommand{\accdasiavaria}{LGR}{\Omega}{&lt;`W}
  \DeclareTextCompositeCommand{\accdasiaoxia}{LGR}{\Omega}{&lt;'W}
  \DeclareTextCompositeCommand{\accdasiaperispomeni}{LGR}{\Omega}{&lt;\char126W}
  \DeclareTextCompositeCommand{\accpsili}{LGR}{\Omega}{&gt;W}
  \DeclareTextCompositeCommand{\accpsilivaria}{LGR}{\Omega}{&gt;`W}
  \DeclareTextCompositeCommand{\accpsilioxia}{LGR}{\Omega}{&gt;'W}
  \DeclareTextCompositeCommand{\accpsiliperispomeni}{LGR}{\Omega}{&gt;\char126W}
  \DeclareTextCompositeCommand{\acctonos}{LGR}{\Omega}{'W}
  \DeclareTextCompositeCommand{\accvaria}{LGR}{\Omega}{`W}
  \DeclareTextComposite{\accdialytika}{LGR}{\Iota}{219}
  \DeclareTextComposite{\accdialytika}{LGR}{\Upsilon}{223}
  \DeclareTextCompositeCommand{\LGR&#64;hiatus}{LGR}{\Alpha}{\LGR&#64;A&#64;hiatus}
  \DeclareTextCompositeCommand{\LGR&#64;hiatus}{LGR}{\Epsilon}{\LGR&#64;E&#64;hiatus}
\fi\fi
</pre>
</div>
<div class="section" id="re-definition-for-greek-unicode-input-in-math-mode">
<h2>Re-definition for Greek Unicode input in math mode</h2>
<p>Check with <tt class="literal">\ifdefined</tt> for the definition of
<tt class="literal">\DeclareUnicodeCharacter</tt>. In contrast to <tt class="literal">\&#64;ifdefined</tt>, this works
without side-effects. It makes, however, the package dependent on the <cite>e-TeX</cite>
extensions.</p>
<p>Map Greek characters that are also defined in math mode to the generic
macros:</p>
<pre class="literal-block">\ifdefined\DeclareUnicodeCharacter
  \DeclareUnicodeCharacter{0393}{\Gamma}   % Γ
  \DeclareUnicodeCharacter{0394}{\Delta}   % Δ
  \DeclareUnicodeCharacter{0398}{\Theta}   % Θ
  \DeclareUnicodeCharacter{039B}{\Lambda}  % Λ
  \DeclareUnicodeCharacter{039E}{\Xi}      % Ξ
  \DeclareUnicodeCharacter{03A0}{\Pi}      % Π
  \DeclareUnicodeCharacter{03A3}{\Sigma}   % Σ
  \DeclareUnicodeCharacter{03A5}{\Upsilon} % Υ
  \DeclareUnicodeCharacter{03A6}{\Phi}     % Φ
  \DeclareUnicodeCharacter{03A8}{\Psi}     % Ψ
  \DeclareUnicodeCharacter{03A9}{\Omega}   % Ω

  \DeclareUnicodeCharacter{03B1}{\alpha}    % α
  \DeclareUnicodeCharacter{03B2}{\beta}     % β
  \DeclareUnicodeCharacter{03B3}{\gamma}    % γ
  \DeclareUnicodeCharacter{03B4}{\delta}    % δ
  \DeclareUnicodeCharacter{03B5}{\epsilon}  % ε
  \DeclareUnicodeCharacter{03B6}{\zeta}     % ζ
  \DeclareUnicodeCharacter{03B7}{\eta}      % η
  \DeclareUnicodeCharacter{03B8}{\theta}    % θ
  \DeclareUnicodeCharacter{03B9}{\iota}     % ι
  \DeclareUnicodeCharacter{03BA}{\kappa}    % κ
  \DeclareUnicodeCharacter{03BB}{\lambda}   % λ
  \DeclareUnicodeCharacter{03BC}{\mu}       % μ
  \DeclareUnicodeCharacter{03BD}{\nu}       % ν
  \DeclareUnicodeCharacter{03BE}{\xi}       % ξ
  \DeclareUnicodeCharacter{03C0}{\pi}       % π
  \DeclareUnicodeCharacter{03C1}{\rho}      % ρ
  \DeclareUnicodeCharacter{03C2}{\varsigma} % ς
  \DeclareUnicodeCharacter{03C3}{\sigma}    % σ
  \DeclareUnicodeCharacter{03C4}{\tau}      % τ
  \DeclareUnicodeCharacter{03C5}{\upsilon}  % υ
  \DeclareUnicodeCharacter{03C6}{\phi}      % φ
  \DeclareUnicodeCharacter{03C7}{\chi}      % χ
  \DeclareUnicodeCharacter{03C8}{\psi}      % ψ
  \DeclareUnicodeCharacter{03C9}{\omega}    % ω

  \DeclareUnicodeCharacter{03DD}{\digamma}  % ϝ
\fi
</pre>
<pre class="literal-block">} % close the \AtBeginDocument macro
</pre>
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