tsa
VARProcess.
mean
Mean of stable process
Lutkepohl eq. 2.1.23
\mu = (I - A_1 - \dots - A_p)^{-1} \alpha
statsmodels.tsa.vector_ar.var_model.VARProcess.ma_rep
statsmodels.tsa.vector_ar.var_model.VARProcess.mse