equation — A displayed mathematical equation
equation ::=
((((title
? &
titleabbrev
?),
info
? db.titleforbidden.info) |
info
db.titleonly.info),
alt
?, (mediaobject
+ |
mathphrase
+ | mml:*
+),
caption
? db.caption)
Common attributes and common linking attributes.
Additional attributes:
floatstyle
label
pgwide
(enumeration) = “0” | “1”
example
must not occur among the children
or descendants of equation
.
figure
must not occur among the children
or descendants of equation
.
table
must not occur among the children
or descendants of equation
.
equation
must not occur among the
children or descendants of equation
.
caution
must not occur among the children
or descendants of equation
.
important
must not occur among the
children or descendants of equation
.
note
must not occur among the children or
descendants of equation
.
tip
must not occur among the children or
descendants of equation
.
warning
must not occur among the children
or descendants of equation
.
An equation
is a formal mathematical equation
(with an optional rather than a 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 equation
s
with title
s and equation
s
without title
s. You are advised to use informalequation
for equations without
titles.
Common attributes and common linking attributes.
Specifies style information to be used when rendering the float
Specifies an identifying string for presentation purposes
Indicates if the element is rendered across the column or the page
Enumerated values: | |
---|---|
“0” | The element should be rendered in the current text flow (with the flow column width). |
“1” | The element should be rendered across the full text page. |
example
, figure
, informalequation
, informalexample
, informalfigure
, informaltable
, inlineequation
, subscript
, superscript
, table
<article xmlns='http://docbook.org/ns/docbook'> <title>Example equation</title> <equation xml:id="eq.fermat"> <title>Fermat's Last Theorem</title> <alt>x^n + y^n ≠ z^n ∀ n ≠ 2</alt> <mediaobject> <imageobject> <imagedata fileref="figures/fermat.png"/> </imageobject> <textobject> <phrase>x^n + y^n ≠ z^n ∀ n ≠ 2</phrase> </textobject> </mediaobject> </equation> </article>
Alternatively, for relatively simple equations such as Fermat’s
Last Theorem, mathphrase
is
often sufficient:
<article xmlns='http://docbook.org/ns/docbook'> <title>Example equation</title> <equation xml:id="eq.fermat.mathphrase"> <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> </article>