Formula, Display

A mathematical equation, expression, or formula that is to be displayed as a block (callout) within the narrative flow. This is not a “formula” in the strict mathematical sense but can be used for any mathematical expression.


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.


content-type Type of Content
id Identifier
specific-use Specific Use

Related Elements

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

Content Model

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

Expanded Content Model

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


Any combination of:

This element may be contained in:

<abstract>, <ack>, <app>, <app-group>, <bio>, <body>, <boxed-text>, <disp-formula-group>, <disp-quote>, <fig>, <glossary>, <license-p>, <named-content>, <notes>, <p>, <ref-list>, <sec>, <styled-content>, <supplementary-material>, <td>, <term>, <th>, <trans-abstract>


<p>... PCR products were separated on gel, blotted, and probed with 
a probe designed to react only with the <italic>ter1-Acc</italic> 
template sequence and not with the wild-type sequence. Acc-35: (GG1935
<italic>ter1-Acc</italic>). Selected as described for Acc-29 
<tex-math id="M1"><![CDATA[\documentclass[12pt]{minimal}
\DeclareFontShape{T1}{linotext}{m}{n} { &#x003C;-&#x003E; linotext }{}
</disp-formula> TER1/ter1-Acc: Acc-29 crossed with GG1935 Bsi-29:
(GG1929 <italic>ter1-Bsi</italic>). Constructed by integration of pTER1-Bsi 
into GG1929 and screening for cells that retained ...</p>