rec-vector1

vector of 4 elements

W3C sample	WIRIS
	$\left(\begin{array}{c}1\\ 2\\ 3\\ x\end{array}\right)$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <vector>
    <cn>1</cn>
    <cn>2</cn>
    <cn>3</cn>
    <ci>x</ci>
  </vector>
</math>

Author: MathML 2 Recommendation