Abstract
Let X = {X(t), t ∈ ℝN} be a Gaussian random field with values in ℝd defined by
. The properties of space and time anisotropy of X and their connections to uniform Hausdorff dimension results are discussed. It is shown that in general the uniform Hausdorff dimension result does not hold for the image sets of a space-anisotropic Gaussian random field X.
When X is an (N, d)-Gaussian random field as in (1), where X 1,...,X d are independent copies of a real valued, centered Gaussian random field X 0 which is anisotropic in the time variable. We establish uniform Hausdorff dimension results for the image sets of X. These results extend the corresponding results on one-dimensional Brownian motion, fractional Brownian motion and the Brownian sheet.
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Wu, D., Xiao, Y. Uniform dimension results for Gaussian random fields. Sci. China Ser. A-Math. 52, 1478–1496 (2009). https://doi.org/10.1007/s11425-009-0103-x
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DOI: https://doi.org/10.1007/s11425-009-0103-x