
Decimal numbers having digit(s) that repeat(s) infinitely such as 1/3 (.3333...) are represented by putting a horizontal line over or below the digits that repeat. <mstack> , <msrow>, and <msline> elements can be used to create decimal numbers with repeated digits as shown below.
<math xmlns = "http://www.w3.org/1998/Math/MathML">
<mstack stackalign = "right">
<msline length = "1"/>
<mn> 0.3333 </mn>
</mstack>
</math>
<math xmlns = "http://www.w3.org/1998/Math/MathML">
<mstack stackalign="right">
<msline length="6"/>
<mn> 0.142857 </mn>
</mstack>
</math>
<math xmlns = "http://www.w3.org/1998/Math/MathML">
<mstack stackalign="right">
<mn> 0.142857 </mn>
<msline length="6"/>
</mstack>
</math>