Abstract
In the introduction we give a short historical survey on the theory of correlation functions of intrinsically stationary random fields. We then prove the existence of generalized correlation functions for intrinsically stationary fields on ℝd as well as an integral representation for these functions. At the end of the paper we show that intrinsically stationary fields are related to unitary operators in Pontryagin spaces in a similar way as stationary fields are related to unitary operators in Hilbert spaces.
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Dedicated to the Centenary of Mark Grigorievich Krein
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Sasvári, Z. (2009). Correlation Functions of Intrinsically Stationary Random Fields. In: Adamyan, V.M., et al. Modern Analysis and Applications. Operator Theory: Advances and Applications, vol 190. Birkhäuser Basel. https://doi.org/10.1007/978-3-7643-9919-1_28
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DOI: https://doi.org/10.1007/978-3-7643-9919-1_28
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