informalequation — A displayed mathematical equation without a title
An InformalEquation is usually a mathematical equation or a
group of related mathematical equations.
These elements contain informalequation: annotation, answer, appendix, article, bibliodiv, bibliography, bibliolist, blockquote, callout, calloutlist, caption (db.caption), caution, chapter, colophon, constraintdef, dedication, entry, example, figure, footnote, glossary, glossdef, glossdiv, glosslist, html:fieldset, html:form, important, index, indexdiv, informalexample, informalfigure, itemizedlist, legalnotice, listitem, msgexplan, msgtext, note, orderedlist, para, partintro, preface, procedure, qandadiv, qandaset, question, refsect1, refsect2, refsect3, refsection, refsynopsisdiv, revdescription, sect1, sect2, sect3, sect4, sect5, section, setindex, sidebar, simplesect, step, taskprerequisites, taskrelated, tasksummary, td, textobject, th, tip, toc, tocdiv, variablelist, warning.
The following elements occur in informalequation: alt, caption (db.caption), info (db.titleforbidden.info), mathphrase, mediaobject, mml:*.
equation, example, figure, informalexample, informalfigure, informaltable, inlineequation, subscript, superscript, table<article xmlns='http://docbook.org/ns/docbook'>
<title>Example informalequation</title>
<para>The equation
<informalequation>
<!-- <alt>e^(pi*i) + 1 = 0</alt> -->
<mediaobject>
<imageobject>
<imagedata fileref="figures/epi10.png"/>
</imageobject>
</mediaobject>
</informalequation>
is delightful because it joins together five of the most
important mathematical constants.
</para>
</article>
The equation
