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stat.ME2013
When the bispectrum is real-valued
E. Iglói, Gy. Terdik
Let {X(t)} be a stationary time series with a.e. positive spectrum. Two consequences of that the bispectrum of {X(t)} is real-valued but nonzero: 1) if {X(t)} is also linear, then…
math.ST2013
Trispectrum and higher order spectra for non-Gaussian homogenous and isotropic field on the 2D-plane
György Terdik
In this paper we study the non-Gaussian homogenous and isotropic field on the plane in frequency domain. The trispectrum and higher order spectra of such a field are described in t…
stat.AP2013
Angular Spectra for non-Gaussian Isotropic Fields
Gyorgy Terdik
Cosmic Microwave Background (CMB) Anisotropies is a subject of intensive research in several fields of sciences. In this paper we start a systematic development of basic notions an…