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<disp-formula-group> Formula, Display Group

Container element for equations or other mathematical expressions that are displayed together.

Usage/Remarks

Best Practice

This element should be used only 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.
Attributes
content-type
originator
specific-use

Base Attributes

id
xml:base
xml:lang
Models and Context
May be contained in
<ack>, <app>, <app-group>, <bio>, <body>, <boxed-text>, <disp-formula-group>, <disp-quote>, <fig>, <glossary>, <index>, <index-div>, <index-group>, <license-p>, <named-content>, <non-normative-example>, <non-normative-note>, <normative-example>, <normative-note>, <notes>, <p>, <ref-list>, <sec>, <see>, <see-also>, <see-also-entry>, <see-entry>, <styled-content>, <supplementary-material>, <tbx:crossReference>, <tbx:definition>, <tbx:entailedTerm>, <tbx:example>, <tbx:externalCrossReference>, <tbx:note>, <tbx:pronunciation>, <tbx:see>, <tbx:source>, <tbx:term>, <tbx:usageNote>, <td>, <term>, <term-display>, <term-sec>, <th>
Description
The following, in order:
Content Model
<!ELEMENT  disp-formula-group
                        %disp-formula-group-model;                   >
Expanded Content Model

((editing-instruction)*, label?, (caption)?, (non-normative-note | normative-note | non-normative-example | normative-example | notes-group)*, (alt-text | long-desc | email | ext-link | uri)*, (disp-formula | disp-formula-group)*)

Tagged Sample

Three equation group

...
<sec>
 <title>...</title>
 <p>...</p>

 <disp-formula-group>
  <disp-formula id="formula-qf-1"
   ><label>(1)</label>
   <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
    <mml:mrow>...</mml:mrow>
   </mml:math>
  </disp-formula>

  <disp-formula id="formula-qf-2"
   ><label>(2)</label>
   <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
    <mml:mrow>...</mml:mrow>
   </mml:math>
  </disp-formula>

  <disp-formula id="formula-qf-3"
   ><label>(3)</label>
   <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
    <mml:mrow>...</mml:mrow>
   </mml:math>
  </disp-formula>
 </disp-formula-group>

</sec>
...
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