/// <summary>
/// Multiplies the polynomial by an <c>IntegerPolynomial</c>,
/// taking the indices mod <c>N</c>.
/// </summary>
///
/// <param name="Factor">A polynomial factor</param>
///
/// <returns>The product of the two polynomials</returns>
public IntegerPolynomial Multiply(IntegerPolynomial Factor)
{
IntegerPolynomial c = m_f1.Multiply(Factor);
c = m_f2.Multiply(c);
c.Add(m_f3.Multiply(Factor));
return(c);
}