tsa.vector_ar
method
VARProcess.
intercept_longrun
Long run intercept of stable VAR process
Lütkepohl eq. 2.1.23
where alpha is the intercept (parameter of the constant)
statsmodels.tsa.vector_ar.var_model.VARProcess.get_eq_index
statsmodels.tsa.vector_ar.var_model.VARProcess.is_stable