Results 1 to 10 of about 918 (56)

Geometric fractional Brownian motion model for commodity market simulation

open access: yesAlexandria Engineering Journal, 2021
The geometric Brownian motion (GBM) model is a mathematical model that has been used to model asset price paths. By incorporating Hurst parameter to GBM to characterize long-memory phenomenon, the geometric fractional Brownian motion (GFBM) model was ...
Siti Nur Iqmal Ibrahim   +2 more
doaj   +1 more source

Stochastic optimal and time-optimal control studies for additional food provided prey–predator systems involving Holling type III functional response

open access: yesComputational and Mathematical Biophysics, 2023
This article consists of a detailed and novel stochastic optimal control analysis of a coupled non-linear dynamical system. The state equations are modelled as an additional food-provided prey–predator system with Holling type III functional response for
Prakash Daliparthi Bhanu   +1 more
doaj   +1 more source

Polymer Measure: Varadhan's Renormalization Revisited [PDF]

open access: yes, 2014
Through chaos decomposition we improve the Varadhan estimate for the rate of convergence of the centered approximate self-intersection local time of planar Brownian motion.Comment: 5 ...
Bock, Wolfgang   +3 more
core   +2 more sources

Brownian Super-exponents [PDF]

open access: yes, 2006
We introduce a transform on the class of stochastic exponentials for d-dimensional Brownian motions. Each stochastic exponential generates another stochastic exponential under the transform.
Goodman, Victor
core   +4 more sources

The moments of the area under reflected Brownian bridge conditional on its local time at zero

open access: yesInternational Journal of Stochastic Analysis, Volume 13, Issue 2, Page 99-124, 2000., 2000
This paper develops a recursion formula for the conditional moments of the area under the absolute value of Brownian bridge given the local time at 0. The method of power series leads to a Hermite equation for the generating function of the coefficients which is solved in terms of the parabolic cylinder functions.
Frank B. Knight
wiley   +1 more source

A scaling proof for Walsh's Brownian motion extended arc-sine law [PDF]

open access: yes, 2012
We present a new proof of the extended arc-sine law related to Walsh's Brownian motion, known also as Brownian spider. The main argument mimics the scaling property used previously, in particular by D.
Vakeroudis, Stavros, Yor, Marc
core   +4 more sources

Sojourn times for the Brownian motion

open access: yesInternational Journal of Stochastic Analysis, Volume 11, Issue 3, Page 231-246, 1998., 1998
In this paper explicit formulas are given for the distribution function, the density function and the moments of the sojourn time for the reflecting Brownian motion process.
Lajos Takács
wiley   +1 more source

Brownian local times

open access: yesInternational Journal of Stochastic Analysis, Volume 8, Issue 3, Page 209-232, 1995., 1995
In this paper explicit formulas are given for the distribution functions and the moments of the local times of the Brownian motion, the reflecting Brownian motion, the Brownian meander, the Brownian bridge, the reflecting Brownian bridge and the Brownian excursion.
Lajos Takács
wiley   +1 more source

Square variation of Brownian paths in Banach spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 5, Issue 3, Page 605-607, 1982., 1982
It is known that if {W(t), 0 ≤ t ≤ 1} is a standard Brownian motion in ℝ then almost surely. We generalize this celebrated theorem of Levy to Brownian motion in real separable Banach spaces.
Mou-Hsiung Chang
wiley   +1 more source

On the most visited sites of planar Brownian motion [PDF]

open access: yes, 2012
Let (B_t : t > 0) be a planar Brownian motion and define gauge functions $\phi_\alpha(s)=log(1/s)^{-\alpha}$ for $\alpha>0$. If $\alpha 0 : B_t=x})>0$, but if $\alpha>1$ almost surely $H^{\phi_\alpha} ({t > 0 : B_t=x})=0$ simultaneously for all $x\in R^2$
Cammarota, Valentina, Mörters, Peter
core   +6 more sources

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