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|
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta charset="utf-8"/>
<meta name="generator" content="Docutils 0.17b.dev: http://docutils.sourceforge.net/" />
<title>alphabeta: Greek symbols in text and math</title>
<meta name="dcterms.rights" content="© 2010 Günter Milde" />
<link rel="schema.dcterms" href="http://purl.org/dc/terms/"/>
<style type="text/css">
/* Minimal style sheet for the HTML output of Docutils. */
/* */
/* :Author: Günter Milde, based on html4css1.css by David Goodger */
/* :Id: $Id$ */
/* :Copyright: © 2015 Günter Milde. */
/* :License: Released under the terms of the `2-Clause BSD license`_, */
/* in short: */
/* */
/* Copying and distribution of this file, with or without modification, */
/* are permitted in any medium without royalty provided the copyright */
/* notice and this notice are preserved. */
/* */
/* This file is offered as-is, without any warranty. */
/* */
/* .. _2-Clause BSD license: http://www.spdx.org/licenses/BSD-2-Clause */
/* This CSS2.1_ stylesheet defines rules for Docutils elements without */
/* HTML equivalent. It is required to make the document semantic visible. */
/* */
/* .. _CSS2.1: http://www.w3.org/TR/CSS2 */
/* .. _validates: http://jigsaw.w3.org/css-validator/validator$link */
/* alignment of text and inline objects inside block objects*/
.align-left { text-align: left; }
.align-right { text-align: right; }
.align-center { clear: both; text-align: center; }
.align-top { vertical-align: top; }
.align-middle { vertical-align: middle; }
.align-bottom { vertical-align: bottom; }
/* titles */
h1.title, p.subtitle {
text-align: center;
}
p.topic-title,
p.sidebar-title,
p.rubric,
p.admonition-title,
p.system-message-title {
font-weight: bold;
}
h1 + p.subtitle,
h2 + p.section-subtitle {
font-size: 1.6em;
}
h3 + p.section-subtitle {
font-size: 1.28em;
}
p.subtitle,
p.section-subtitle,
p.sidebar-subtitle {
font-weight: bold;
margin-top: -0.5em;
}
p.sidebar-title {
font-size: larger;
}
p.rubric {
font-size: larger;
color: maroon;
}
a.toc-backref {
color: black;
text-decoration: none; }
/* Warnings, Errors */
div.system-messages h2,
span.problematic,
p.system-message-title {
color: red;
}
/* inline literals */
span.docutils.literal {
font-family: monospace;
white-space: pre-wrap;
}
/* do not wraph at hyphens and similar: */
.literal > span.pre { white-space: nowrap; }
/* Lists */
/* compact and simple lists: no margin between items */
.simple li, .compact li,
.simple ul, .compact ul,
.simple ol, .compact ol,
.simple > li p, .compact > li p,
dl.simple > dd, dl.compact > dd {
margin-top: 0;
margin-bottom: 0;
}
/* Table of Contents */
div.topic.contents { margin: 0.5em 0; }
div.topic.contents ul {
list-style-type: none;
padding-left: 1.5em;
}
/* Enumerated Lists */
ol.arabic { list-style: decimal }
ol.loweralpha { list-style: lower-alpha }
ol.upperalpha { list-style: upper-alpha }
ol.lowerroman { list-style: lower-roman }
ol.upperroman { list-style: upper-roman }
dt span.classifier { font-style: italic }
dt span.classifier:before {
font-style: normal;
margin: 0.5em;
content: ":";
}
/* Field Lists and drivatives */
/* bold field name, content starts on the same line */
dl.field-list > dt,
dl.option-list > dt,
dl.docinfo > dt,
dl.footnote > dt,
dl.citation > dt {
font-weight: bold;
clear: left;
float: left;
margin: 0;
padding: 0;
padding-right: 0.5em;
}
/* Offset for field content (corresponds to the --field-name-limit option) */
dl.field-list > dd,
dl.option-list > dd,
dl.docinfo > dd {
margin-left: 9em; /* ca. 14 chars in the test examples */
}
/* start field-body on a new line after long field names */
dl.field-list > dd > *:first-child,
dl.option-list > dd > *:first-child
{
display: inline-block;
width: 100%;
margin: 0;
}
/* field names followed by a colon */
dl.field-list > dt:after,
dl.docinfo > dt:after {
content: ":";
}
/* Bibliographic Fields (docinfo) */
pre.address { font: inherit; }
dd.authors > p { margin: 0; }
/* Option Lists */
dl.option-list { margin-left: 1.5em; }
dl.option-list > dt { font-weight: normal; }
span.option { white-space: nowrap; }
/* Footnotes and Citations */
dl.footnote.superscript > dd {margin-left: 1em; }
dl.footnote.brackets > dd {margin-left: 2em; }
dl > dt.label { font-weight: normal; }
a.footnote-reference.brackets:before,
dt.label > span.brackets:before { content: "["; }
a.footnote-reference.brackets:after,
dt.label > span.brackets:after { content: "]"; }
a.footnote-reference.superscript,
dl.footnote.superscript > dt.label {
vertical-align: super;
font-size: smaller;
}
dt.label > span.fn-backref { margin-left: 0.2em; }
dt.label > span.fn-backref > a { font-style: italic; }
/* Line Blocks */
div.line-block { display: block; }
div.line-block div.line-block {
margin-top: 0;
margin-bottom: 0;
margin-left: 40px;
}
/* Figures, Images, and Tables */
.figure.align-left,
figure.align-left,
img.align-left,
object.align-left,
table.align-left {
margin-right: auto;
}
.figure.align-center,
figure.align-center,
img.align-center,
object.align-center,
table.align-center {
margin-left: auto;
margin-right: auto;
}
.figure.align-right,
figure.align-right,
img.align-right,
object.align-right,
table.align-right {
margin-left: auto;
}
img.align-center, img.align-right,
object.align-center, object.align-right {
display: block;
}
/* reset inner alignment in figures and tables */
.figure.align-left, .figure.align-right,
figure.align-left, figure.align-right,
table.align-left, table.align-center, table.align-right {
text-align: inherit;
}
/* Sidebar */
aside.sidebar {
width: 30%;
max-width: 26em;
float: right;
clear: right;
}
/* Text Blocks */
blockquote,
div.topic,
div.admonition,
div.system-message,
pre.literal-block,
pre.doctest-block,
pre.math,
pre.code {
margin-left: 1.5em;
margin-right: 1.5em;
}
pre.code .ln { color: gray; } /* line numbers */
/* Tables */
table { border-collapse: collapse; }
td, th {
border-style: solid;
border-color: silver;
padding: 0 1ex;
border-width: thin;
}
td > p:first-child, th > p:first-child { margin-top: 0; }
td > p, th > p { margin-bottom: 0; }
table > caption {
text-align: left;
margin-bottom: 0.25em
}
table.borderless td, table.borderless th {
border: 0;
padding: 0;
padding-right: 0.5em /* separate table cells */
}
/* Document Header and Footer */
header { border-bottom: 1px solid black; }
footer { border-top: 1px solid black; }
/* new HTML5 block elements: set display for older browsers */
header, section, footer, aside, nav, main, article, figure {
display: block;
}
</style>
<style type="text/css">
/* CSS31_ style sheet for the output of Docutils HTML writers. */
/* Rules for easy reading and pre-defined style variants. */
/* */
/* :Author: Günter Milde, based on html4css1.css by David Goodger */
/* :Id: $Id$ */
/* :Copyright: © 2015 Günter Milde. */
/* :License: Released under the terms of the `2-Clause BSD license`_, */
/* in short: */
/* */
/* Copying and distribution of this file, with or without modification, */
/* are permitted in any medium without royalty provided the copyright */
/* notice and this notice are preserved. */
/* */
/* This file is offered as-is, without any warranty. */
/* */
/* .. _2-Clause BSD license: http://www.spdx.org/licenses/BSD-2-Clause */
/* .. _CSS3: http://www.w3.org/TR/CSS3 */
/* Document Structure */
/* ****************** */
/* "page layout" */
body {
margin: 0;
background-color: #dbdbdb;
}
div.document,
main {
line-height:1.3;
counter-reset: table figure;
/* avoid long lines --> better reading */
/* optimum is 45…75 characters/line <http://webtypography.net/2.1.2> */
/* OTOH: lines should not be too short because of missing hyphenation, */
max-width: 50em;
padding: 1px 2%; /* 1px on top avoids grey bar above title (mozilla) */
margin: auto;
background-color: white;
}
/* Sections */
/* Transitions */
hr.docutils {
width: 80%;
margin-top: 1em;
margin-bottom: 1em;
clear: both;
}
/* Paragraphs */
/* ========== */
/* vertical space (parskip) */
p, ol, ul, dl, li, dd,
div.line-block,
div.topic,
table {
margin-top: 0.5em;
margin-bottom: 0.5em;
}
p:first-child { margin-top: 0; }
/* (:last-child is new in CSS 3) */
p:last-child { margin-bottom: 0; }
h1, h2, h3, h4, h5, h6,
dl > dd {
margin-bottom: 0.5em;
}
/* Lists */
/* ===== */
/* Separate list entries in compound lists */
dl > dd, ol > li,
/* Definition Lists */
/* Indent lists nested in definition lists */
/* (:only-child is new in CSS 3) */
dd > ul:only-child, dd > ol:only-child { padding-left: 1em; }
/* Description Lists */
/* styled like in most dictionaries, encyclopedias etc. */
dl.description > dt {
font-weight: bold;
clear: left;
float: left;
margin: 0;
padding: 0;
padding-right: 0.5em;
}
/* Field Lists */
/* example for custom field-name width */
dl.field-list.narrow > dd {
margin-left: 5em;
}
/* run-in: start field-body on same line after long field names */
dl.field-list.run-in > dd p {
display: block;
}
/* Bibliographic Fields */
/* generally, bibliographic fields use special definition list dl.docinfo */
/* but dedication and abstract are placed into "topic" divs */
div.abstract p.topic-title {
text-align: center;
}
div.dedication {
margin: 2em 5em;
text-align: center;
font-style: italic;
}
div.dedication p.topic-title {
font-style: normal;
}
/* Citations */
dl.citation dt.label {
font-weight: bold;
}
span.fn-backref {
font-weight: normal;
}
/* Text Blocks */
/* =========== */
/* Literal Blocks */
pre.literal-block,
pre.doctest-block,
pre.math,
pre.code {
font-family: monospace;
}
/* Block Quotes */
blockquote > table,
div.topic > table {
margin-top: 0;
margin-bottom: 0;
}
blockquote p.attribution,
div.topic p.attribution {
text-align: right;
margin-left: 20%;
}
/* Tables */
/* ====== */
/* th { vertical-align: bottom; } */
table tr { text-align: left; }
/* "booktabs" style (no vertical lines) */
table.booktabs {
border: 0;
border-top: 2px solid;
border-bottom: 2px solid;
border-collapse: collapse;
}
table.booktabs * {
border: 0;
}
table.booktabs th {
border-bottom: thin solid;
}
/* numbered tables (counter defined in div.document) */
table.numbered > caption:before {
counter-increment: table;
content: "Table " counter(table) ": ";
font-weight: bold;
}
/* Explicit Markup Blocks */
/* ====================== */
/* Footnotes and Citations */
/* ----------------------- */
/* line on the left */
dl.footnote {
padding-left: 1ex;
border-left: solid;
border-left-width: thin;
}
/* Directives */
/* ---------- */
/* Body Elements */
/* ~~~~~~~~~~~~~ */
/* Images and Figures */
/* let content flow to the side of aligned images and figures */
.figure.align-left,
figure.align-left,
img.align-left,
object.align-left {
display: block;
clear: left;
float: left;
margin-right: 1em;
}
.figure.align-right,
figure.align-right,
img.align-right,
object.align-right {
display: block;
clear: right;
float: right;
margin-left: 1em;
}
/* Stop floating sidebars, images and figures at section level 1,2,3 */
h1, h2, h3, h4 { clear: both; }
/* Numbered figures */
figure.numbered > figcaption > p:before {
counter-increment: figure;
content: "Figure " counter(figure) ": ";
font-weight: bold;
}
/* Admonitions and System Messages */
div.admonition,
div.system-message,
aside.sidebar {
border: medium outset;
margin: 1em 1.5em;
padding: 0.5em 1em;
}
div.caution p.admonition-title,
div.attention p.admonition-title,
div.danger p.admonition-title,
div.error p.admonition-title,
div.warning p.admonition-title,
div.error {
color: red;
}
/* Sidebar */
/* Move right. In a layout with fixed margins, */
/* it can be moved into the margin. */
div.sidebar,
aside.sidebar {
width: 30%;
max-width: 26em;
margin-left: 1em;
margin-right: -2%;
background-color: #ffffee;
}
/* Code */
pre.code { padding: 0.7ex }
pre.code, code { background-color: #eeeeee }
pre.code .ln { color: gray; } /* line numbers */
/* basic highlighting: for a complete scheme, see */
/* http://docutils.sourceforge.net/sandbox/stylesheets/ */
pre.code .comment, code .comment { color: #5C6576 }
pre.code .keyword, code .keyword { color: #3B0D06; font-weight: bold }
pre.code .literal.string, code .literal.string { color: #0C5404 }
pre.code .name.builtin, code .name.builtin { color: #352B84 }
pre.code .deleted, code .deleted { background-color: #DEB0A1}
pre.code .inserted, code .inserted { background-color: #A3D289}
/* Math */
/* styled separately (see math.css for math-output=HTML) */
/* Epigraph */
/* Highlights */
/* Pull-Quote */
/* Compound Paragraph */
/* Container */
/* Document Header and Footer */
footer, header {
font-size: smaller;
clear: both;
padding: 0.5em 2%;
background-color: #ebebee;
border: none;
}
/* Inline Markup */
/* ============= */
/* Emphasis */
/* em */
/* Strong Emphasis */
/* strong */
/* Interpreted Text */
/* span.interpreted */
/* Title Reference */
/* cite */
/* Inline Literals */
/* possible values: normal, nowrap, pre, pre-wrap, pre-line */
/* span.docutils.literal { white-space: pre-wrap; } */
/* Hyperlink References */
a { text-decoration: none; }
/* External Targets */
/* span.target.external */
/* Internal Targets */
/* span.target.internal */
/* Footnote References */
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<main 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 class="licence">Licence</dt>
<dd class="licence"><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 1.3 of this license or any later version.</p>
</dd>
<dt class="identification">Identification</dt>
<dd class="identification"><pre class="literal-block">\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{alphabeta}
[2020/10/13 2.0 macros for Greek letters in text and math]</pre>
</dd>
</dl>
<div class="abstract topic">
<p class="topic-title">Abstract</p>
<p>Use <span class="docutils literal">\alpha, \beta, ...</span> for Greek letters in text and math
mode.</p>
</div>
<dl>
<dt>Changelog:</dt>
<dd><table class="borderless">
<colgroup>
<col style="width: 8%" />
<col style="width: 14%" />
<col style="width: 78%" />
</colgroup>
<tbody>
<tr><td><p>0.1</p></td>
<td><p>2012-06-26</p></td>
<td><p>initial version</p></td>
</tr>
<tr><td><p>0.2</p></td>
<td><p>2013-05-03</p></td>
<td><p>new accent macro names with <span class="docutils literal">lgrxenc.def</span> 0.7</p></td>
</tr>
<tr><td><p>0.3</p></td>
<td><p>2013-05-28</p></td>
<td><p>use <span class="docutils literal">lgrenc.def</span> from greek-fontenc,</p></td>
</tr>
<tr><td><!-- -->
</td>
<td></td>
<td><p>enable Unicode input in math mode.</p></td>
</tr>
<tr><td><p>0.4</p></td>
<td><p>2013-09-11</p></td>
<td><p>move to <a class="reference external" href="http://ctan.org/pkg/greek-fontenc">greek-fontenc</a>, support XeTeX/LuaTeX.</p></td>
</tr>
<tr><td><p>0.13</p></td>
<td><p>2015-09-04</p></td>
<td><p>Support for <cite>variant symbols</cite>.</p></td>
</tr>
<tr><td><p>0.13.2</p></td>
<td><p>2016-02-05</p></td>
<td><p>Support for standard Unicode text font encoding “TU”
(new in fontspec v2.5a).</p></td>
</tr>
<tr><td><p>0.14</p></td>
<td><p>2020/02/28</p></td>
<td><p>rename <span class="docutils literal"><span class="pre">alphabeta-euenc.def</span></span> to
<span class="docutils literal"><span class="pre">alphabeta-tuenc.def</span></span>.</p></td>
</tr>
<tr><td><p>1.0</p></td>
<td><p>2020/09/25</p></td>
<td><p>New package version. No changes in this file.</p></td>
</tr>
<tr><td><p>2.0</p></td>
<td><p>2020/10/13</p></td>
<td><p>Provide <span class="docutils literal">\Koppa</span>.</p></td>
</tr>
</tbody>
</table>
</dd>
</dl>
<section id="motivation">
<h2>Motivation</h2>
<p>By default, the <span class="docutils literal">\alpha, \beta, ...</span> 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 <span class="docutils literal">utf8</span> option of <a class="reference external" href="http://ctan.org/pkg/inputenc">inputenc</a>, literal Unicode
characters can be used for Greek symbols in mathematical formulas.</p>
<div class="admonition 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://ctan.org/pkg/babel">Babel</a> or
<a class="reference external" href="http://ctan.org/pkg/polyglossia">Polyglossia</a> (setting the language to <span class="docutils literal">greek</span>) or wrapped in the
provided <span class="docutils literal">ensuregreek</span> macro. Using <a class="reference external" href="http://ctan.org/pkg/babel">Babel</a> or <a class="reference external" href="http://ctan.org/pkg/polyglossia">Polyglossia</a> also helps
to ensure proper hyphenation.</p>
</div>
</section>
<section id="usage">
<h2>Usage</h2>
<pre class="code latex literal-block"><code><span class="keyword">\usepackage</span><span class="name builtin">{</span>alphabeta<span class="name builtin">}</span></code></pre>
<p>The <a class="reference external" href="http://ctan.org/pkg/greek-inputenc">greek-inputenc</a> package provides support for Unicode (utf-8) input
of Greek characters with 8-bit TeX and the <a class="reference external" href="http://ctan.org/pkg/inputenc">inputenc</a> package:</p>
<pre class="code latex literal-block"><code><span class="keyword">\usepackage</span><span class="name attribute">[utf-8]</span><span class="name builtin">{</span>inputenc<span class="name builtin">}</span>
<span class="keyword">\usepackage</span><span class="name builtin">{</span>alphabeta<span class="name builtin">}</span></code></pre>
<section id="conflicts">
<h3>Conflicts</h3>
<p><cite>alphabeta</cite> does not work if the <span class="docutils literal">utf8x</span> input encoding is selected.
(<span class="docutils literal">utf8x</span> is an interface to the <span class="docutils literal">ucs</span> package which uses a
non-compatible definition of <span class="docutils literal">\DeclareUnicodeCharacter</span>.)</p>
<p>For details see <a class="reference external" href="alphabeta-doc.tex">alphabeta-doc.tex</a> and <a class="reference external" href="alphabeta-doc.pdf">alphabeta-doc.pdf</a>.</p>
</section>
</section>
<section id="implementation">
<h2>Implementation</h2>
<section id="requirements">
<h3>Requirements</h3>
<p>This package extends the <a class="reference external" href="textalpha.sty.html">textalpha</a> package.
Package options are passed on to <cite>textalpha</cite>:</p>
<pre class="literal-block">\RequirePackageWithOptions{textalpha}</pre>
<p>Just like <cite>alphabeta</cite>, <cite>textalpha</cite> is part of <a class="reference external" href="http://ctan.org/pkg/greek-fontenc">greek-fontenc</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 <span class="docutils literal">\ifdefined</span> test.</p>
<p>It uses the <span class="docutils literal">\TextOrMath</span> test from the <a class="reference external" href="http://ctan.org/pkg/fixltx2e">fixltx2e</a> standard LaTeX package.
<span class="docutils literal">fixltx2e</span> is loaded by default since TeXLive 2015. In case of an
<span class="docutils literal">\TextOrMath undefined</span> error, load it in the document preamble via</p>
<pre class="code latex literal-block"><code><span class="keyword">\usepackage</span><span class="name builtin">{</span>fixltx2e<span class="name builtin">}</span></code></pre>
</section>
<section id="postpone-the-re-definitions">
<h3>Postpone the re-definitions</h3>
<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>
</section>
<section id="save-math-macros">
<h3>Save math macros</h3>
<p>Map the standard math commands to maths-specific names:</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\mathvarepsilon\varepsilon
\let\mathzeta\zeta
\let\matheta\eta
\let\maththeta\theta
\let\mathvartheta\vartheta
\let\mathiota\iota
\let\mathkappa\kappa
\let\mathlambda\lambda
\let\mathmu\mu
\let\mathnu\nu
\let\mathxi\xi
\let\mathpi\pi
\let\mathvarpi\varpi
\let\mathrho\rho
\let\mathvarrho\varrho
\let\mathsigma\sigma
\let\mathvarsigma\varsigma
\let\mathfinalsigma\varsigma
\let\mathtau\tau
\let\mathupsilon\upsilon
\let\mathphi\phi
\let\mathvarphi\varphi
\let\mathchi\chi
\let\mathpsi\psi
\let\mathomega\omega
% ``\digamma`` is defined by amsmath, provide a fallback
\providecommand*{\digamma}{\textit{\textdigamma}}
\let\mathdigamma\digamma
% \varkappa and \varbeta are defined by some math packages
\ifdefined\varbeta
\let\mathvarbeta\varbeta
\fi
\ifdefined\varkappa % e.g. with newtxmath
\let\mathvarkappa\varkappa
\fi</pre>
</section>
<section id="commands-to-access-greek-letters-by-name">
<h3>Commands to access Greek letters by name</h3>
<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 <span class="docutils literal"><span class="pre">\text...</span></span>
command.</p>
<p>Mathematical notation distinguishes <a class="reference internal" href="#variant-shape-symbols">variant shape symbols</a> for pi, phi,
rho, theta (small and capital), beta, and kappa (characters for the latter
three symbols are not included in TeX’s math fonts). These variations have
no syntactic meaning in Greek text and are not given code-points in the LGR
encoding while Unicode defines separate code points for the symbol variants.</p>
<p>Greek Alphabet:</p>
<p>Macros keep their meaning in mathematical mode (i.e. use the same shape as
without this package) and refer to GREEK LETTER … in text. For
<span class="docutils literal">\epsilon</span> and <span class="docutils literal">phi</span>, this means that the selected symbol variant
differs in text vs. math mode. Use <span class="docutils literal">\varepsilon</span> and <span class="docutils literal">\varphi</span> (see
section <a class="reference internal" href="#variant-shape-symbols">variant shape symbols</a> below) to select the GREEK LETTER …”
in both, text and math mode.</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}} % ε/ϵ
\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}} % ϕ/φ
\renewcommand*{\chi}{\TextOrMath{\textchi}{\mathchi}}
\renewcommand*{\psi}{\TextOrMath{\textpsi}{\mathpsi}}
\renewcommand*{\omega}{\TextOrMath{\textomega}{\mathomega}}</pre>
<section id="archaic-letters">
<h4>Archaic letters</h4>
<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*{\Koppa}{\textKoppa} % Ϟ (greek 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>
</section>
<section id="variant-shape-symbols">
<h4>Variant shape symbols</h4>
<p>TeX’s concept of “standard” vs. “variant” math symbols does not map to the
distinction between GREEK LETTER … vs. GREEK … SYMBOL in the Unicode
standard (see <a class="reference external" href="test-tuenc-greek.pdf">test-tuenc-greek.pdf</a>).</p>
<p>The <span class="docutils literal"><span class="pre">\...symbol</span></span> macros select the GREEK … SYMBOL in both, text and
math mode. For <span class="docutils literal">\epsilonsymbol</span> and <span class="docutils literal">\phisymbol</span> this is the default
shape in math mode. The <span class="docutils literal"><span class="pre">\var...</span></span> macros select the shape used by TeX
math (or, if not supported, the SYMBOL shape):</p>
<pre class="literal-block">% ..symbol == var..
\renewcommand*{\varpi}{\TextOrMath{\textpisymbol}{\mathvarpi}} % ϖ
\providecommand*{\pisymbol}{\varpi} % ϖ
\renewcommand*{\varrho}{\TextOrMath{\textrhosymbol}{\mathvarrho}} % ϱ
\providecommand*{\rhosymbol}{\TextOrMath{\textrhosymbol}{\mathvarrho}} % ϱ
\renewcommand*{\vartheta}{\TextOrMath{\textthetasymbol}{\mathvartheta}} % ϑ
\providecommand*{\thetasymbol}{\vartheta} % ϑ
% ..symbol != var..
\renewcommand*{\varepsilon}{\TextOrMath{\textepsilon}{\mathvarepsilon}} % ε
\providecommand*{\epsilonsymbol}{\TextOrMath{\textepsilonsymbol}{\mathepsilon}} % ϵ
\renewcommand*{\varphi}{\TextOrMath{\textphi}{\mathvarphi}} % φ
\providecommand*{\phisymbol}{\TextOrMath{\textphisymbol}{\mathphi}} % ϕ
% only text (in standard 8-bit TeX, may be defined with additional packages):
\ifdefined\mathvarbeta
\renewcommand*{\varbeta}{\TextOrMath{\textbetasymbol}{\mathvarbeta}} % ϐ
\else
\providecommand*{\varbeta}{\textbetasymbol}
\fi
\providecommand*{\betasymbol}{\varbeta}
\ifdefined\mathvarkappa % ϰ
\renewcommand*{\varkappa}{\TextOrMath{\textkappasymbol}{\mathvarkappa}}
\else
\providecommand*{\varkappa}{\textkappasymbol}
\fi
\providecommand*{\kappasymbol}{\varkappa}
% \Theta/\varTheta are not a symbol variants but upright/italic shape of Theta
\providecommand*{\Thetasymbol}{\textThetasymbol} % ϴ</pre>
</section>
</section>
<section id="textcompositecommands-for-the-generic-macros">
<h3>TextCompositeCommands for the generic macros</h3>
<p>The NFSS TextComposite mechanism looks for the next token without expanding
it. In order to let compositions like <span class="docutils literal"><span class="pre">\ensuregreek{\'\Alpha}</span></span> or
<span class="docutils literal"><span class="pre">\ensuregreek{\>"\alpha}</span></span> 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">\@ifl@aded{def}{tuenc-greek}{
\input{alphabeta-tuenc.def}
}{}
\@ifl@aded{def}{lgrenc}{
\input{alphabeta-lgr.def}
}{}</pre>
</section>
<section id="re-definition-for-greek-unicode-input-in-math-mode">
<h3>Re-definition for Greek Unicode input in math mode</h3>
<p>Check with <span class="docutils literal">\ifdefined</span> for the definition of
<span class="docutils literal">\DeclareUnicodeCharacter</span>. In contrast to <span class="docutils literal">\@ifdefined</span>, this works
without side-effects. It makes the package dependent on the <a class="reference external" href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=etex">e-TeX</a>
extensions but these are standard in all current TeX distributions anyway.</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}{\varepsilon} % ε textepsilon/varepsilon
\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}{\varphi} % φ textphi/varphi
\DeclareUnicodeCharacter{03C7}{\chi} % χ
\DeclareUnicodeCharacter{03C8}{\psi} % ψ
\DeclareUnicodeCharacter{03C9}{\omega} % ω
\DeclareUnicodeCharacter{03D1}{\thetasymbol} % ϑ
\DeclareUnicodeCharacter{03D5}{\phisymbol} % ϕ $\phi$
\DeclareUnicodeCharacter{03D6}{\pisymbol} % ϖ
\DeclareUnicodeCharacter{03DD}{\digamma} % ϝ
\DeclareUnicodeCharacter{03F1}{\rhosymbol} % ϱ
\DeclareUnicodeCharacter{03F5}{\epsilonsymbol} % ϵ $\epsilon$
\fi</pre>
<pre class="literal-block">} % close the \AtBeginDocument macro</pre>
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