/// <summary>Returns the left singular vectors as a <see cref="Matrix{T}"/>.</summary>
/// <returns>The left singular vectors. The matrix will be <c>null</c>, if <b>computeVectors</b> in the constructor is set to <c>false</c>.</returns>
public Matrix <T> U()
{
return(ComputeVectors ? MatrixU.Clone() : null);
}