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math.ST2023
Factorization of a spectral density with smooth eigenvalues of a multidimensional stationary time series
Tamás Szabados
The aim of this paper to give a multidimensional version of the classical one-dimensional case of smooth spectral density. A smooth spectral density gives an explicit method to fac…
math.ST2020
Regular multidimensional stationary time series
Tamás Szabados
The aim of this paper is to give a simpler, more usable sufficient condition to the regularity of generic weakly stationary time series. Also, this condition is used to show how re…