Conditions for recurrence and transience for time-inhomogeneous random walks

Abstract

The present paper extends the earlier results obtained by Abramov [`Conditions for recurrence and transience for time-inhomogeneous birth-and-death processes' \emph{Bull. Aust. Math. Soc.} \textbf{109} (2024), 393--402] for the case of time-inhomogeneous random walks, the increments of which take values in $\mathbb{R}$. By this, we give a full solution of the open problem formulated by Menshikov and Volkov [`Urn-related random walk with drift $\rho x^{\alpha }/t^{\beta }$' \emph{Electron. J. Probab.}, \textbf{13} (2008), paper No. 31, 944--960] that was partially solved in the aforementioned paper by Abramov.

arXiv comment13 pages, bibl. 15, this is the last revision prepared 18 months ago. This version will not be submitted to a journal