The MathML <mrow>
element is used to group sub-expressions, which usually contain one or more operators with their respective operands (such as <mi>
and <mn>
). This element renders as a horizontal row containing its arguments.
When writing a MathML expression, you should group elements within an <mrow>
in the same way as they are grouped in the mathematical interpretation of the expression. Proper grouping helps the rendering of the expression in several ways:
- It can improve the display by possibly affecting spacing.
- It allows for more intelligent line-breaking and indentation.
- It simplifies the interpretation of the expression by automated systems such as computer algebra systems and audio renderers.
Attributes
- class, id, style
- Provided for use with stylesheets.
displaystyle
- A Boolean value specifying whether more vertical space is used for displayed equations or, if set to
false
, a more compact layout is used to display formulas. The main effect is that larger versions of operators are displayed, whendisplaystyle
is set totrue
. See alsolargeop
andmovablelimits
on<mo>
. - dir
- Overall directionality of formulas. Possible values are either
ltr
(left to right) orrtl
(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.
Examples
<math>
<mrow>
<mn> 1 </mn>
<mo> + </mo>
<mn> 1 </mn>
</mrow>
<mrow>
<mo> ( </mo>
<mrow>
<mi> x </mi>
<mo> , </mo>
<mi> y </mi>
</mrow>
<mo> ) </mo>
</mrow>
</math>
Specifications
Specification | Status | Comment |
---|---|---|
MathML Core The definition of 'mrow' in that specification. |
Draft | Draft specification |
MathML 3.0 The definition of 'mrow' in that specification. |
Recommendation | Current specification |
MathML 2.0 The definition of 'mrow' in that specification. |
Recommendation | Initial specification |
Browser compatibility
BCD tables only load in the browser
See also
- Grouping HTML elements:
<div>