conditional central moments of \(y_t\) of orders \(0:l\)
Parameters:
l (int) – highest order of the central moments to derive, >= 1.
Returns:
a list of polys with attribute keyfor =
(‘e^{kt}’,’t’,’k^{-}’,’v0-theta’,’theta’,’sigma’,
‘l_{1:n}’, ‘o_{1:n}’,
‘sigma/2k’,’rho-sigma/2k’,’sqrt(1-rho^2)’,
‘lmbd_s’, ‘mu_s’, ‘sigma_s’)