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A discrete analogue of a theorem of Makarov. (English) Zbl 0799.60062

Let \(S(j)\) be a simple random walk in \({\mathbb{Z}}^ 2\), \(A\) be a finite subset of \({\mathbb{Z}}^ 2\), and \(H_ A(\cdot)\) be the hitting measure of the walk (from infinity). It is proved that \[ H_ A\{x: n^{-1}e^{- (\text{ln } n)^ \alpha}\leq H_ A(x)\leq n^{-1}e^{(\text{ln } n)^ \alpha}\}\geq 1-k(\text{ln } n)^ \beta \] for any \(\alpha\in ({1\over 2},1)\), \(\beta\in (0,{1\over 2})\) and any connected \(A\) of radius \(n\), where the constant \(k\) does not depend on \(A\) and \(n\).

MSC:

60G50 Sums of independent random variables; random walks
31A15 Potentials and capacity, harmonic measure, extremal length and related notions in two dimensions
60J65 Brownian motion
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References:

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