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Theory of Probability and Mathematical Statistics

ISSN 1547-7363(online) ISSN 0094-9000(print)

   
 
 

 

On recurrence and transience of some Lévy-type processes in $\mathbb {R}$


Author: Victoria Knopova
Journal: Theor. Probability and Math. Statist. 108 (2023), 59-75
MSC (2020): Primary 60G17; Secondary 60J25, 60G53
DOI: https://doi.org/10.1090/tpms/1187
Published electronically: May 2, 2023
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Abstract: In this note we prove some sufficient conditions for transience and recurrence of a Lévy-type process in $\mathbb {R}$, whose generator defined on the test functions is of the form \begin{equation*} Lf(x) =\int _{\mathbb {R}} \left ( f(x+u)-f(x)- \nabla f(x)\cdot u \mathbb {1}_{|u|\leq 1} \right ) \nu (x,du), \quad f\in C_\infty ^2(\mathbb {R}). \end{equation*} Here $\nu (x,du)$ is a Lévy-type kernel, whose tails are either extended regularly varying or decaying fast enough. For the proof the Foster–Lyapunov approach is used.


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Additional Information

Victoria Knopova
Affiliation: Taras Shevchenko National University of Kyiv, Faculty of Mechanics and Mathematics, Hlushkova Avenue, 4e, 02127, Kyiv, Ukraine
Email: vicknopova@knu.ua

Keywords: Recurrence, transience, Lévy-type process, Foster–Lyapunov criteria, Lyapunov function
Received by editor(s): August 4, 2021
Accepted for publication: March 13, 2022
Published electronically: May 2, 2023
Additional Notes: The Grant “PK-0122U001843 Time-inhomogeneous or time-nondeterministic stochastic dynamic systems: asymptotic behaviour and statistic analysis” is gratefully acknowledged.
Article copyright: © Copyright 2023 Taras Shevchenko National University of Kyiv