Abstract
The Wold decomposition theorem says that under fairly general conditions, a stationary time series has a unique linear causal representation \(\displaystyle{ X_{t} =\sum _{ j=0}^{\infty }\psi _{ j}Z_{t-j},\,t \in \mathbb{Z}, }\) where \(\sum _{j=0}^{\infty }\psi _{j}^{2} <\infty\) and (Z t ) are uncorrelated random variables (r.v’s).
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Turkman, K.F., Scotto, M.G., de Zea Bermudez, P. (2014). Introduction. In: Non-Linear Time Series. Springer, Cham. https://doi.org/10.1007/978-3-319-07028-5_1
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DOI: https://doi.org/10.1007/978-3-319-07028-5_1
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