Results 51 to 60 of about 243,967 (218)

重分数布朗运动的列维连续模(Lévy's moduli of continuity of multifractional Brownian motion)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2000
This paper proposed Lévy's moduli of continuity of multifractional Brownian motion,which is a generalization of the fractional Brownian motion.
LINZheng-yan(林正炎)
doaj   +1 more source

Mixed Fractional Brownian Motion [PDF]

open access: yesBernoulli, 2001
We show that the sum of a Brownian motion and a non-trivial multiple of an independent fractional Brownian motion with Hurst parameter H ∈ (0,1] is not a semimartingale if H ∈ (0, ½) ∪ (½, ¾], that it is equivalent to a multiple of Brownian motion if H = ½ and equivalent to Brownian motion if H ∈ ( ¾ , 1].
openaire   +2 more sources

Extremes of spherical fractional Brownian motion [PDF]

open access: yesExtremes, 2019
Let $\{B_ (x), x \in \mathbb{S}^N\}$ be a fractional Brownian motion on the $N$-dimensional unit sphere $\mathbb{S}^N$ with Hurst index $ $. We study the excursion probability $\mathbb{P}\{\sup_{x\in T} B_ (x) > u \}$ and obtain the asymptotics as $u\to \infty$, where $T$ can be the entire sphere $\mathbb{S}^N$ or a geodesic disc on $\mathbb{S}^N$
Cheng, Dan, Liu, Peng
openaire   +4 more sources

Fractional Brownian motion [PDF]

open access: yes, 2006
Fractional Brownian motion is a stochastic process which deviates significantly from Brownian motion and semimartingales, and others classically used in probability theory. As a centered Gaussian process, it is characterized by the stationarity of its increments and a medium-or long-memory property which is in sharp contrast with martingales and Markov
openaire   +4 more sources

Are Fractional Brownian Motions Predictable? [PDF]

open access: yes, 2011
We provide a device, called the local predictor, which extends the idea of the predictable compensator. It is shown that a fBm with the Hurst index greater than 1/2 coincides with its local predictor while fBm with the Hurst index smaller than 1/2 does not admit any local predictor.
openaire   +3 more sources

Fractional Brownian motion in a nutshell [PDF]

open access: yesInternational Journal of Modern Physics: Conference Series, 2015
This is an extended version of the lecture notes to a mini-course devoted to fractional Brownian motion and delivered to the participants of the 7th Jagna International Workshop.
openaire   +3 more sources

A Set-indexed Fractional Brownian Motion [PDF]

open access: yesJournal of Theoretical Probability, 2006
We define and prove the existence of a fractional Brownian motion indexed by a collection of closed subsets of a measure space. This process is a generalization of the set-indexed Brownian motion, when the condition of independance is relaxed. Relations with the Levy fractional Brownian motion and with the fractional Brownian sheet are studied.
Erick Herbin, Ely Merzbach
openaire   +4 more sources

Fractional Brownian motion in a finite interval: correlations effect depletion or accretion zones of particles near boundaries [PDF]

open access: yesNew Journal of Physics, 2019
Fractional Brownian motion (FBM) is a Gaussian stochastic process with stationary, long-time correlated increments and is frequently used to model anomalous diffusion processes.
T. Guggenberger   +4 more
semanticscholar   +1 more source

Asymptotic Growth of Sample Paths of Tempered Fractional Brownian Motions, with Statistical Applications to Vasicek-Type Models

open access: yesFractal and Fractional
Tempered fractional Brownian motion (TFBM) and tempered fractional Brownian motion of the second kind (TFBMII) modify the power-law kernel in the moving average representation of fractional Brownian motion by introducing exponential tempering.
Yuliya Mishura, Kostiantyn Ralchenko
doaj   +1 more source

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