    | DocBook: The Definitive Guide 2.0.17 (Alpha) |
| | DocBook: The Definitive Guide 2.0.17 (Alpha) |
$Revision: 5565 $
$Date: 2006-02-16 08:50:26 -0500 (Thu, 16 Feb 2006) $
equation — A displayed mathematical equation
equation ::= (blockinfo?, (title,titleabbrev?)?, (informalequation| (alt?, (graphic+|mediaobject+|mathphrase+))))
Name | Type | Default |
| floatstyle | CDATA | None |
| label | CDATA | None |
An Equation is a formal mathematical equation
(with an optional rather than required title).
If the MathML Module is used, Equation can
also contain the mml:math element.
Formatted as a displayed block. For an inline equation, use InlineEquation.
Processing systems that number equations or build a table of
equations at the beginning of a document may have difficulty correctly
formatting documents that contain both Equations
with Titles and Equations
without Titles. You are advised to use
InformalEquation for equations without titles.
In some future version of DocBook, probably
V5.0, even though the change has not yet been
announced, the Title on Equation
will be required. For equations without titles, use
InformalEquation.
These elements contain equation:
answer, appendix, article, bibliodiv, bibliography, blockquote, callout, caution, chapter, constraintdef, glossary, glossdef, glossdiv, important, index, listitem, msgexplan, msgtext, note, 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, tip, warning.
The following elements occur in equation:
alt, blockinfo, graphic, informalequation, mathphrase, mediaobject, title, titleabbrev.
Label specifies an identifying string for presentation purposes.
Generally, an explicit Label attribute is
used only if the processing system is incapable of generating the label
automatically. If present, the Label
is normative; it will used even
if the processing system is capable of automatic labelling.
example, figure, informalequation, informalexample, informalfigure, informaltable, inlineequation, subscript, superscript, table.
<!DOCTYPE equation PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<equation><title>Fermat's Last Theorem</title>
<alt>x^n + y^n ≠ z^n ∀ n > 2</alt>
<graphic fileref="figures/fermat.png"/>
</equation>Alternatively, for relatively simple equations such as Fermat's Last
Theorem, mathphrase is often sufficient:
<!DOCTYPE equation PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<equation><title>Fermat's Last Theorem</title>
<alt>x^n + y^n ≠ z^n ∀ n > 2</alt>
<mathphrase>x<superscript>n</superscript>
+ y<superscript>n</superscript>
≠ z<superscript>n</superscript>
∀ n ≠ 2</mathphrase>
</equation>| | | |
| epigraph | | errorcode |