<disp-formula>

Formula, Display

Mathematical equation, expression, or formula that is to be displayed as a block (callout) within the narrative flow.

Remarks

A <disp-formula> need not be a “formula” in the strict mathematical sense, but can be used for any mathematical expression or equation.
This element may contain the actual characters that make up an equation or formula or a graphic that contains the formula. Thus, the mathematics can be expressed as ASCII characters; MathML, TeX, or LaTeX expressions; or as a graphic or series of graphics.
A display equation may numbered, using automatic numbering or by storing the number in a <label> element.

Related Elements

For a mathematical equation, expression, or formula which is to be displayed inline with the text, use the <inline-formula> element.

Attributes

content-type Type of Content
id Document Internal Identifier
specific-use Specific Use
xml:base Base
xml:lang Language

Content Model

<!ELEMENT  disp-formula %disp-formula-model;                         >

Expanded Content Model

(#PCDATA | alt-text | long-desc | abstract | email | ext-link | uri | break | bold | fixed-case | italic | monospace | overline | roman | sans-serif | sc | strike | underline | ruby | inline-graphic | inline-media | private-char | chem-struct | inline-formula | kwd-group | subj-group | label | named-content | styled-content | tex-math | mml:math | alternatives | array | code | graphic | media | preformat | sub | sup)*

Description

Any combination of:

This element may be contained in:

<answer>, <app>, <app-group>, <bio>, <body>, <boxed-text>, <disp-formula-group>, <disp-quote>, <explanation>, <fig>, <glossary>, <license-p>, <named-content>, <notes>, <option>, <p>, <question>, <question-preamble>, <ref-list>, <sec>, <see>, <see-also>, <styled-content>, <supplementary-material>, <table-wrap>, <td>, <term>, <th>

Example 1

An equation tagged using TeX math:
...
<p>... Selected as described for Acc-29
<disp-formula>
<tex-math id="M1"><![CDATA[\documentclass[12pt]{minimal}
\usepackage{wasysym}
\usepackage[substack]{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage[mathscr]{eucal}
\usepackage{mathrsfs}
\DeclareFontFamily{T1}{linotext}{}
\DeclareFontShape{T1}{linotext}{m}{n} { &#x003C;-&#x003E; linotext }{}
\DeclareSymbolFont{linotext}{T1}{linotext}{m}{n}
\DeclareSymbolFontAlphabet{\mathLINOTEXT}{linotext}
\begin{document}
$$
{\mathrm{Acc/Acc:\hspace{.5em}}}\frac{{\mathit{ade2-202}}}{{\mathit{ADE2}}}\
hspace{.5em}\frac{{\mathit{ura3-59}}}{{\mathit{ura3-59}}}\hspace{.5em}\frac{{\
mathit{ADE1}}}{{\mathit{adel-201}}}\hspace{.5em}\frac{{\mathit{ter1-Acc}}}{{\
mathit{ter1-Acc}}}\hspace{.5em}\frac{{\mathit{MATa}}}{{\mathit{MAT{\alpha}}}}
$$
\end{document}]]>
</tex-math>
</disp-formula> TER1/ter1-Acc: Acc-29 crossed with ...</p>
...

Example 2

Alternatives to an equation, including a graphic, XML-tagged MathML, and TeX tagging:
...
<disp-formula id="eq_002">
<label>(2)</label>
<alternatives>
<graphic xlink:href="graphic/eq_002.png"/>
<mml:math>
<mml:mstyle displaystyle="true" scriptlevel="0">
<mml:mi mathvariant="normal">&Delta;</mml:mi>
<mml:mi>x</mml:mi>
<mml:mi mathvariant="normal">&Delta;</mml:mi>
<mml:mi>p</mml:mi>
<mml:mo>&ge;</mml:mo>
<mml:mfrac>
<mml:mn>1</mml:mn>
<mml:mn>2</mml:mn>
</mml:mfrac>
<mml:mi class="MJX-variant">&hbar;</mml:mi>
</mml:mstyle>
</mml:math>
<tex-math><![CDATA[\displaystyle \Delta x \Delta p \geq \frac{1}{2} \hbar]]></tex-math>
</alternatives>
</disp-formula>
...

Journal Publishing Tag Library NISO JATS Version 1.3d1 (ANSI/NISO Z39.96-2019)

Version of October 2019

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