Results 51 to 60 of about 134 (133)

Sub- and Super-solutions of a Nonlinear PDE, and Application to a Semilinear SPDE [PDF]

open access: yes, 2013
2010 Mathematics Subject Classification: 35R60, 60H15, 74H35.We obtain upper and lower bounds for the explosion time of a semi-linear heat equation on a bounded $d$-dimensional domain, perturbed by white noise. The bounds we get are expressed in terms of
Kolkovska, E. T., López-Mimbela, J. A.
core  

Stochastic stability and instability of rumor model

open access: yesOpen Mathematics
In this study, we present a stochastic rumor model. The stability of the disease-free equilibrium state and instability of the free equilibrium E0{E}_{0} of stochastic epidemics model are considered with the help of Lyapunov functions.
Zhang Jing, Wang Xinyao, Wang Xiaohuan
doaj   +1 more source

On a semilinear mixed fractional heat equation driven by fractional Brownian sheet

open access: yes, 2017
In this paper, we consider the stochastic heat equation of the form \u2202 u
Xia, Dengfeng   +3 more
core   +1 more source

A branching particle approximation to a filtering micromovement model of asset price

open access: yes
Particle filters, Monte Carlo approximation, Filtering, Counting process, Stochastic partial differential equation, Ultra-high frequency data, Primary: 60H15, Secondary: 60K35, 35R60, 93E11, 60F05, 91B28,
Jie Xiong, Yong Zeng
core   +1 more source

Optimal portfolio choice in the bond market

open access: yes
Term structure of interest rates, Malliavin calculus, Utility maximization, Infinite-dimensional stochastic processes, E43, 60H07, 60H15, 91B28,
Michael Tehranchi, Nathanael Ringer
core   +1 more source

On large deviations regimes for random media models

open access: yes, 2006
We investigate the behavior of probabilities of large deviations above the mean versus large deviations below the mean for random additive functionals in a variety of random media models.
Gauthier, Damien
core   +1 more source

Existence of Lévy term structure models

open access: yes
Forward curve spaces, Lévy term structure models, Stochastic integration in Hilbert spaces, Strong, weak and mild solutions of infinite dimensional SDEs, 91B28, 91B70, 60G51, 60H15, E43, G10,
Damir Filipović   +2 more
core   +1 more source

Generalized backward doubly stochastic differential equations driven by Lévy processes with non-Lipschitz coefficients

open access: yes, 2010
We prove an existence and uniqueness result for generalized backward doubly stochastic differential equations driven by Lévy processes with non-Lipschitz assumptions.2000 AMS Mathematics Subject Classification: Primary: 60F05, 60H15; Secondary ...
Aman, Auguste, Owo, Jean-Marc
core  

Early warning signs for SPDEs with continuous spectrum

open access: yesEuropean Journal of Applied Mathematics
In this work, we study early warning signs for stochastic partial differential equations (SPDEs), where the linearisation around a steady state is characterised by continuous spectrum. The studied warning sign takes the form of qualitative changes in the
Paolo Bernuzzi   +2 more
doaj   +1 more source

A note on intermittency for the fractional heat equation [PDF]

open access: yes, 2013
The goal of the present note is to study intermittency properties for the solution to the fractional heat equation with initial condition bounded above and below, where β ∈ (0, 2] and the noise W behaves in time like a fractional Brownian motion of index
Raluca M Balan, Daniel Conus
core  

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