Formula, Inline

A mathematical equation, expression, or formula that is to be displayed inline. The mathematics itself can be expressed as ASCII characters, as a graphic, or using TeX, LaTeX, or MathML mathematics expressions.


Some print-oriented tag sets use a specific element to indicate “go into math mode or math font here”. While that was not the intended usage of this element, in nearly all cases the text inside such math-changes is a mathematical expression. It would not be incorrect to use this element to mark such material; however, some users may find this tagging undesirable.


content-type Type of Content
id Identifier
xml:lang Language

Related Elements

For a mathematical equation, expression, or formula which is to be displayed as a block (callout), use the Formula, Display<disp-formula> element.

Content Model

<!ELEMENT  inline-formula            
                        %inline-formula-model;                       >

Expanded Content Model

(#PCDATA | bold | italic | monospace | overline | roman | sans-serif | sc | strike | underline | alternatives | inline-graphic | private-char | chem-struct | inline-formula | tex-math | mml:math | named-content | styled-content | sub | sup)*


Any combination of:

This element may be contained in:

<addr-line>, <alt-title>, <article-title>, <attrib>, <award-id>, <bold>, <collab>, <comment>, <conf-theme>, <def-head>, <disp-formula>, <element-citation>, <funding-source>, <inline-formula>, <italic>, <label>, <license-p>, <meta-value>, <mixed-citation>, <monospace>, <named-content>, <overline>, <p>, <product>, <roman>, <sans-serif>, <sc>, <strike>, <styled-content>, <sub>, <subject>, <subtitle>, <sup>, <supplement>, <td>, <term>, <term-head>, <th>, <title>, <trans-subtitle>, <trans-title>, <underline>, <verse-line>


<p>... (e) For any neighboring cells, <italic>j</italic> and
</inline-formula> and
</inline-formula>, &phi;<sub>e</sub> is the potential in intercellular
space. For convenience, we present the algorithm for the 2-D model
here; the 3-D case is similar. ...</p>