Outputs (2)

Rate of escape and central limit theorem for the supercritical Lamperti problem (2010)
Journal Article
Menshikov, M., & Wade, A. R. (2010). Rate of escape and central limit theorem for the supercritical Lamperti problem. Stochastic Processes and their Applications, 120(10), 2078-2099. https://doi.org/10.1016/j.spa.2010.06.004

The study of discrete-time stochastic processes on the half-line with mean drift at x given by μ1(x)→0 as x→∞ is known as Lamperti’s problem. We give sharp almost-sure bounds for processes of this type in the case where μ1(x) is of order x−β for some... Read More about Rate of escape and central limit theorem for the supercritical Lamperti problem.

Angular asymptotics for multi-dimensional non-homogeneous random walks with asymptotically zero drift (2010)
Journal Article
MacPhee, I. M., Menshikov, M. V., & Wade, A. R. (2010). Angular asymptotics for multi-dimensional non-homogeneous random walks with asymptotically zero drift. Markov processes and related fields, 16(2), 351-388

We study the first exit time $\tau$ from an arbitrary cone with apex at the origin by a non-homogeneous random walk (Markov chain) on $\Z^d$ ($d \geq 2$) with mean drift that is asymptotically zero. Specifically, if the mean drift at $\bx \in \Z^d$ i... Read More about Angular asymptotics for multi-dimensional non-homogeneous random walks with asymptotically zero drift.