On the hitting probabilities of limsup random fractals

preprint2021arXivOpen access

Abstract

Let AA be a limsup random fractal with indices γ1, γ2 γ_1, ~γ_2 ~and δδ on [0,1]d[0,1]^d. We determine the hitting probability P(A∩G)\mathbb{P}(A\cap G) for any analytic set GG with the condition (⋆)(\star) ⁣:\colon dim⁡H(G)>γ2+δ\dim_{\rm H}(G)>γ_2+δ, where dim⁡H\dim_{\rm H} denotes the Hausdorff dimension. This extends the correspondence of Khoshnevisan, Peres and Xiao [10] by relaxing the condition that the probability PnP_n of choosing each dyadic hyper-cube is homogeneous and lim⁡n→∞log⁡2Pnn\lim\limits_{n\to\infty}\frac{\log_2P_n}{n} exists. We also present some counterexamples to show the Hausdorff dimension in condition (⋆)(\star) can not be replaced by the packing dimension.

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