mathphrase

mathphrase — A mathematical phrase that can be represented with ordinary text and a small amount of markup.

Synopsis

mathphrase ::=

Zero or more of:
- text
- Graphic inlines
  - inlinemediaobject
- Indexing inlines
  - indexterm (db.indexterm.endofrange)
  - indexterm (db.indexterm.singular)
  - indexterm (db.indexterm.startofrange)
- Linking inlines
  - anchor
  - biblioref
  - link
  - olink
  - xref
- Ubiquitous inlines
  - abbrev
  - acronym
  - alt
  - anchor
  - biblioref
  - coref
  - date
  - emphasis (db._emphasis)
  - firstterm (db._firstterm)
  - footnote
  - footnoteref
  - foreignphrase (db._foreignphrase)
  - glossterm (db._glossterm)
  - indexterm (db.indexterm.endofrange)
  - indexterm (db.indexterm.singular)
  - indexterm (db.indexterm.startofrange)
  - inlinemediaobject
  - link
  - olink
  - phrase (db._phrase)
  - quote (db._quote)
  - remark
  - subscript
  - superscript
  - trademark
  - wordasword
  - xref

Attributes

Common attributes and common linking attributes.

No additional attributes.

Description

A mathphrase is a wrapper around a mathematical equation or other mathematical markup. It was originally designed for simple, inline equations, ones that can be represented using ordinary text, symbols, subscripts, and superscripts. A good example is: E=mc².

In a mathematical context, the alternatives are generally an image, MathML, or a mathphrase. In processing systems that support rich mathematical notation in other formats, for example TeX, it may be common to put much more complex markup in the mathphrase element.

For example, Equation 1, “A continued fraction in TeX” shows a continued fraction using TeX markup. If your browser supports rendering of TeX in this context, it will be formatted accordingly.

$$a_0+{1\over\displaystyle a_1+ {\strut 1\over\displaystyle a_2+ {\strut 1\over\displaystyle a_3+ {\strut 1\over a_4}}}}$$

Equation 1. A continued fraction in TeX

That is plausibly more than one might consider “a phrase”.

Processing expectations

Formatted inline.

Attributes

Common attributes and common linking attributes.

any attribute: Any attribute in any other explicit namespace

Parents

These elements contain mathphrase: equation, informalequation, inlineequation.

Children

The following elements occur in mathphrase: text, abbrev, acronym, alt, anchor, biblioref, coref, date, emphasis (db._emphasis), firstterm (db._firstterm), footnote, footnoteref, foreignphrase (db._foreignphrase), glossterm (db._glossterm), indexterm (db.indexterm.endofrange), indexterm (db.indexterm.singular), indexterm (db.indexterm.startofrange), inlinemediaobject, link, olink, phrase (db._phrase), quote (db._quote), remark, subscript, superscript, trademark, wordasword, xref.

Examples

 1 |<article xmlns='http://docbook.org/ns/docbook'>
   |<title>Example equation</title>
   | 
   |<equation xml:id="eq.fermatphrase">
 5 |  <title>Fermat's Last Theorem</title>
   |  <mathphrase>x<superscript>n</superscript>
   |+ y<superscript>n</superscript>
   |≠ z<superscript>n</superscript>
   |∀ n ≠ 2</mathphrase>
10 |</equation>
   | 
   |</article>

xⁿ + yⁿ ≠ zⁿ ∀ n ≠ 2

Equation 2. Fermat's Last Theorem