<mi>

The MathML <mi> element indicates that the content should be rendered as an identifier such as function names, variables or symbolic constants. You can also have arbitrary text in it to mark up terms.

Attributes

class, id, style

Provided for use with stylesheets.

dir

The text direction. Possible values are either ltr (left to right) or rtl (right to left).

href

Used to set a hyperlink to a specified URI.

mathbackground

The background color. You can use #rgb, #rrggbb and HTML color names.

mathcolor

The text color. You can use #rgb, #rrggbb and HTML color names.

mathsize

The size of the content. Possible values are:

• small: Font is rendered smaller than the current font size.
• normal: Equivalent to 100% or 1em.
• big: Font is rendered larger than the current font size.
• a custom length.
• or a unitless value which multiplies the default.

mathvariant

This logical class of the identifier, which varies in typography. That is, although the names suggest the typographic style for the class, semantically, items with the same class are treated "the same" within an expression, which might or might not involve displaying them with the named typography. The following values are allowed:

• normal (Default value for more than one character) ; $\mathrm{Example}$
• bold ; $\mathbf{Example}$
• italic (Default value for a single character) ; $\mathit{Example}$
• bold-italic ; $\mathit{Example}$

• double-struck ; $\mathbb{Example}$
• bold-fraktur ; $\mathfrak{Example}$
• script ; $\mathcal{Example}$
• bold-script ; $\mathcal{Example}$
• fraktur ; $\mathfrak{Example}$

• sans-serif ; $\mathsf{Example}$
• bold-sans-serif ; $\mathsf{Example}$
• sans-serif-italic ; $\mathsf{Example}$
• sans-serif-bold-italic ; $\mathsf{Example}$
• monospace ; $\mathtt{Example}$

• initial ; ${مثال}$
• tailed ; ${مثال}$
• looped ; ${مثال}$
• stretched ; ${مثال}$

Examples

<math> 
  <mi> y </mi>  
  <mi> sin </mi>
  <mi mathvariant="monospace"> x </mi>
  <mi mathvariant="bold"> &pi; </mi>
</math>

Specifications

Browser compatibility

Gecko-specific notes

• Starting with Gecko 20.0 (Firefox 20.0 / Thunderbird 20.0 / SeaMonkey 2.17) a unitless value for mathsize is allowed.
• Some mathvariant values are only implemented starting with Gecko 28.0 (Firefox 28.0 / Thunderbird 28.0 / SeaMonkey 2.25) and require appropriate math fonts.