Container element for equations or other mathematical expressions.
Best Practice: This element should be used for a group of equations or other mathematical expressions to be displayed together; it should not contain only a single equation or expression.
Equations within such groups may be given a single group number, numbered individually, or both.
<!ELEMENT disp-formula-group
%disp-formula-group-model; >(label?, (caption)?, (alt-text | long-desc | email | ext-link | uri)*, (disp-formula | disp-formula-group)*)
The following, in order:
<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>
...
<sec>
<title>The Quadratic Formula Explained</title>
<p>...</p>
<disp-formula-group>
<disp-formula id="formula-qf-1">
<label>(1)</label>
<mml:math>
<mml:mrow>
...</mml:mrow>
</mml:math>
</disp-formula>
<disp-formula id="formula-qf-2">
<label>(2)</label>
<mml:math>
<mml:mrow>
...
</mml:mrow>
</mml:math>
</disp-formula>
<disp-formula id="formula-qf-3">
<label>(3)</label>
<mml:math>
<mml:mrow>
...</mml:mrow>
</mml:math>
</disp-formula>
</disp-formula-group>
</sec>
...
JATS-math1.ent