Results 1 to 10 of about 54 (54)

Random time-changes and asymptotic results for a class of continuous-time Markov chains on integers with alternating rates

open access: yesModern Stochastics: Theory and Applications, 2020
We consider continuous-time Markov chains on integers which allow transitions to adjacent states only, with alternating rates. This kind of processes are useful in the study of chain molecular diffusions.
Luisa Beghin   +2 more
doaj   +1 more source

On a Fractional Stochastic Risk Model with a Random Initial Surplus and a Multi-Layer Strategy

open access: yesMathematics, 2022
The paper deals with a fractional time-changed stochastic risk model, including stochastic premiums, dividends and also a stochastic initial surplus as a capital derived from a previous investment.
Enrica Pirozzi
doaj   +1 more source

Cesaro Limits for Fractional Dynamics

open access: yesFractal and Fractional, 2021
We study the asymptotic behavior of random time changes of dynamical systems. As random time changes we propose three classes which exhibits different patterns of asymptotic decays.
Yuri Kondratiev, José da Silva
doaj   +1 more source

Noncentral moderate deviations for fractional Skellam processes

open access: yesModern Stochastics: Theory and Applications, 2023
The term moderate deviations is often used in the literature to mean a class of large deviation principles that, in some sense, fills the gap between a convergence in probability to zero (governed by a large deviation principle) and a weak convergence to
Jeonghwa Lee, Claudio Macci
doaj   +1 more source

A New Fractional Poisson Process Governed by a Recursive Fractional Differential Equation

open access: yesFractal and Fractional, 2022
This paper proposes a new fractional Poisson process through a recursive fractional differential governing equation. Unlike the homogeneous Poison process, the Caputo derivative on the probability distribution of k jumps with respect to time is linked to
Zhehao Zhang
doaj   +1 more source

Poissonian resetting of subdiffusion in a linear potential

open access: yesCondensed Matter Physics, 2023
Resetting a stochastic process is an important problem describing the evolution of physical, biological and other systems which are continually returned to their certain fixed point. We consider the motion of a subdiffusive particle with a constant drift
A. A. Stanislavsky
doaj   +1 more source

On the infinite divisibility of distributions of some inverse subordinators

open access: yesModern Stochastics: Theory and Applications, 2018
We consider the infinite divisibility of distributions of some well-known inverse subordinators. Using a tail probability bound, we establish that distributions of many of the inverse subordinators used in the literature are not infinitely divisible.
Arun Kumar, Erkan Nane
doaj   +1 more source

Lévy-walk-like Langevin dynamics

open access: yesNew Journal of Physics, 2019
Continuous-time random walks and Langevin equations are two classes of stochastic models used to describe the dynamics of particles in the natural world.
Xudong Wang, Yao Chen, Weihua Deng
doaj   +1 more source

Compositions of Poisson and Gamma processes

open access: yesModern Stochastics: Theory and Applications, 2017
In the paper we study the models of time-changed Poisson and Skellam-type processes, where the role of time is played by compound Poisson-Gamma subordinators and their inverse (or first passage time) processes.
Khrystyna Buchak, Lyudmyla Sakhno
doaj   +1 more source

On the Fractional Poisson Process and the Discretized Stable Subordinator

open access: yesAxioms, 2015
We consider the renewal counting number process N = N(t) as a forward march over the non-negative integers with independent identically distributed waiting times.
Rudolf Gorenflo, Francesco Mainardi
doaj   +1 more source

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