Conditional central moment \(E[(v_t - E[v])^n|v0]\)
Different from the cmoment_v() in ‘cond_cmom.py’ in the keyfor attribute.
keyfor
n (int) – order of the conditional central moment
poly with keyfor = (‘e^{kt}’, ‘k^{-}’, ‘v0-E[v]’, ‘E[v]’, ‘sigma’, ‘lmbd’, ‘mu_v’)
Poly