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On finite-dimensional projections of distributions for solutions of randomly forced PDE's

Analysis of PDEs 2015-06-26 v1 Probability

Abstract

The paper is devoted to studying the image of probability measures on a Hilbert space under finite-dimensional analytic maps. We establish sufficient conditions under which the image of a measure has a density with respect to the Lebesgue measure and continuously depends on the map. The results obtained are applied to the 2D Navier--Stokes equations perturbed by various random forces of low dimension.

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Cite

@article{arxiv.math/0603295,
  title  = {On finite-dimensional projections of distributions for solutions of randomly forced PDE's},
  author = {Andrei Agrachev and Sergei Kuksin and Andrey Sarychev and Armen Shirikyan},
  journal= {arXiv preprint arXiv:math/0603295},
  year   = {2015}
}

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24 pages