Results 31 to 40 of about 212,713 (312)

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

ON THE QHASI CLASS AND ITS EXTENSION TO SOME GAUSSIAN SHEETS

open access: yesInternational Journal for Computational Civil and Structural Engineering, 2022
Introduced in 2018 the generalized bifractional Brownian motion is considered as an element of the quasi-helix with approximately stationary increment class of real centered Gaussian processes conditioning by parameters.
Charles El-Nouty, Darya Filatova
doaj   +1 more source

Exact distributions of the maximum and range of random diffusivity processes

open access: yesNew Journal of Physics, 2021
We study the extremal properties of a stochastic process x _t defined by the Langevin equation ${\dot {x}}_{t}=\sqrt{2{D}_{t}}\enspace {\xi }_{t}$ , in which ξ _t is a Gaussian white noise with zero mean and D _t is a stochastic ‘diffusivity’, defined as
Denis S Grebenkov   +4 more
doaj   +1 more source

Pricing European Options under a Fuzzy Mixed Weighted Fractional Brownian Motion Model with Jumps

open access: yesFractal and Fractional, 2023
This study investigates the pricing formula for European options when the underlying asset follows a fuzzy mixed weighted fractional Brownian motion within a jump environment.
Feng Xu, Xiao-Jun Yang
doaj   +1 more source

Limits of bifractional Brownian noises [PDF]

open access: yes, 2008
Let $B^{H,K}=(B^{H,K}_{t}, t\geq 0)$ be a bifractional Brownian motion with two parameters $H\in (0,1)$ and $K\in(0,1]$. The main result of this paper is that the increment process generated by the bifractional Brownian motion $(B^{H,K}_{h+t} -B^{H,K}_{h}
Maejima, Makoto, Tudor, Ciprian
core   +4 more sources

On the Integral of the Fractional Brownian Motion and Some Pseudo-Fractional Gaussian Processes

open access: yesMathematics, 2019
We investigate the main statistical parameters of the integral over time of the fractional Brownian motion and of a kind of pseudo-fractional Gaussian process, obtained as a classical Gauss−Markov process from Doob representation by replacing ...
Mario Abundo, Enrica Pirozzi
doaj   +1 more source

Scaled penalization of Brownian motion with drift and the Brownian ascent

open access: yes, 2018
We study a scaled version of a two-parameter Brownian penalization model introduced by Roynette-Vallois-Yor in arXiv:math/0511102. The original model penalizes Brownian motion with drift $h\in\mathbb{R}$ by the weight process ${\big(\exp(\nu S_t):t\geq 0\
B Roynette   +21 more
core   +1 more source

Operator Fractional Brownian Motion and Martingale Differences

open access: yesAbstract and Applied Analysis, 2014
It is well known that martingale difference sequences are very useful in applications and theory. On the other hand, the operator fractional Brownian motion as an extension of the well-known fractional Brownian motion also plays an important role in both
Hongshuai Dai   +2 more
doaj   +1 more source

Hydrothermal analysis of magneto hydrodynamic nanofluid flow between two parallel by AGM

open access: yesCase Studies in Thermal Engineering, 2019
In this paper, heat and mass transfer process of steady nanofluid flow between two parallel plates is investigated in existence of uniform magnetic field.
R. Derakhshan   +4 more
doaj   +1 more source

Cluster Analysis on Locally Asymptotically Self-Similar Processes with Known Number of Clusters

open access: yesFractal and Fractional, 2022
We conduct cluster analysis of a class of locally asymptotically self-similar stochastic processes with finite covariance structures, which includes Brownian motion, fractional Brownian motion, and multifractional Brownian motion as paradigmatic examples.
Nan Rao, Qidi Peng, Ran Zhao
doaj   +1 more source

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