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Covariance factorisation and abstract representation of generalised random fields. (English) Zbl 0968.60035

Authors’ summary: This paper introduces a new concept of duality of generalized random fields using the geometric properties of Sobolev spaces of integer order. Under this duality condition, the covariance operators of a generalized random field and its dual can be factorized. The paper also defines a concept of generalized white noise relative to the geometries of the Sobolev spaces, and via the covariance factorization, obtains a representation of the generalized random field as a stochastic equation driven by a generalized white noise. This representation is unique except for isometric isomorphisms on the parameter space.

MSC:

60G20 Generalized stochastic processes
60G60 Random fields
Full Text: DOI

References:

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