Mathematical equation, expression, or formula that is to be displayed as a block (callout) within the narrative flow.
A graphic image showing the formatted mathematical material may be provided as a fallback in case the rendering environment does not support MathML. See the example.
Any combination of:
<ack>, <app>, <app-group>, <bio>, <body>, <boxed-text>, <disp-formula-group>, <disp-quote>, <fig>, <glossary>, <license-p>, <named-content>, <non-normative-example>, <non-normative-note>, <notes>, <p>, <ref-list>, <sec>, <styled-content>, <supplementary-material>, <td>, <term>, <term-display>, <term-sec>, <th>
In the following example, the <alternatives> element is used to wrap a mathematical expression encoded in MathML with a graphic image of the same expression for use in environments where MathML is not supported.
...
<disp-formula>
<alternatives>
<mml:math>
<mml:mrow>
<mml:msubsup>
<mml:mo> ∫ </mml:mo>
<mml:mn> 0 </mml:mn>
<mml:mn> 1 </mml:mn>
</mml:msubsup>
<mml:mrow>
<mml:msup>
<mml:mi> ⅇ </mml:mi>
<mml:mi> x </mml:mi>
</mml:msup>
<mml:mo> ⁢ </mml:mo>
<mml:mrow>
<mml:mo> ⅆ </mml:mo>
<mml:mi> x </mml:mi>
</mml:mrow>
</mml:mrow>
</mml:mrow>
</mml:math>
<graphic xlink:href="images/integral">
<alt-text>The integral from zero to one of e to the power x
times dx.</alt-text>
<permissions>
<copyright-statement>© 1998-2003 W3C ® (MIT, ERCIM,
Keio); used by permission</copyright-statement>
<copyright-year>1998-2003</copyright-year>
<copyright-holder>W3C ® (MIT, ERCIM,
Keio)</copyright-holder>
</permissions>
</graphic>
</alternatives>
</disp-formula>
...
The graphic rendering of the mathematical expression is:

(MathML example and graphic from Mathematical Markup Language (MathML) Version 2.0 (Second Edition), W3C Recommendation 21 October 2003, ed. David Carlisle et al., © 1998-2003 W3C® (MIT, ERCIM, Keio), all rights reserved. Used by permission.)
JATS-math0.ent