The <mtd> MathML element represents a cell in a table or a matrix. It may only appear in a <mtr> element. This element is similar to the <td> element of HTML.
This element's attributes include the global MathML attributes as well as the following attributes:
columnspanA non-negative integer value that indicates on how many columns does the cell extend.
rowspanA non-negative integer value that indicates on how many rows does the cell extend.
Some browsers may also support the following attributes:
columnalign Specifies the horizontal alignment of this cell and overrides values specified by <mtable> or <mtr>. Possible values are: left, center and right.
rowalign Specifies the vertical alignment of this cell and overrides values specified by <mtable> or <mtr>. Possible values are: axis, baseline, bottom, center and top.
<math display="block">
<mfrac>
<mi>A</mi>
<mn>2</mn>
</mfrac>
<mo>=</mo>
<mrow>
<mo>(</mo>
<mtable>
<mtr>
<mtd><mn>1</mn></mtd>
<mtd><mn>2</mn></mtd>
<mtd><mn>3</mn></mtd>
</mtr>
<mtr>
<mtd><mn>4</mn></mtd>
<mtd><mn>5</mn></mtd>
<mtd><mn>6</mn></mtd>
</mtr>
<mtr>
<mtd><mn>7</mn></mtd>
<mtd><mn>8</mn></mtd>
<mtd><mn>9</mn></mtd>
</mtr>
</mtable>
<mo>)</mo>
</mrow>
</math>