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 expressions; or as a graphic or series of graphics.


alternate-form-of Alternate Form of Graphic, Media Object, Etc.
id Identifier

Related Elements

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

Model Information

Content Model

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


Any combination of:

This element may be contained in:

<app> Appendix; <body> Body of the Article; <boxed-text> Boxed Text; <fig> Figure; <named-content> Named Special (Subject) Content; <p> Paragraph; <sec> Section; <td> Table Data Cell (XHTML table model); <th> Table Header Cell (XHTML table model)

Tagged Example

<p>... This can be seen in the following summation:
<mml:mover accent='true'>