Results 11 to 20 of about 963 (56)

Generalized random processes and Cauchy′s problem for some partial differential systems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 3, Issue 3, Page 549-558, 1980., 1979
In this paper we consider a parabolic partial differential system of the form DtHt = L(t, x, D)Ht. The generalized stochastic solutions Ht, corresponding to the generalized stochastic initial conditions H0 are given. Some properties concerning these generalized stochastic solutions are also obtained.
Mahmoud M. El-Borai
wiley   +1 more source

HIGH ORDER PARACONTROLLED CALCULUS

open access: yesForum of Mathematics, Sigma, 2019
We develop in this work a general version of paracontrolled calculus that allows to treat analytically within this paradigm a whole class of singular partial differential equations with the same efficiency as regularity structures.
ISMAËL BAILLEUL, FRÉDÉRIC BERNICOT
doaj   +1 more source

Quasilinear parabolic stochastic partial differential equations: existence, uniqueness [PDF]

open access: yes, 2015
In this paper, we provide a direct approach to the existence and uniqueness of strong (in the probabilistic sense) and weak (in the PDE sense) solutions to quasilinear stochastic partial differential equations, which are neither monotone nor locally ...
Hofmanova, Martina, Zhang, Tusheng
core   +3 more sources

A dynamical approximation for stochastic partial differential equations [PDF]

open access: yes, 2007
Random invariant manifolds often provide geometric structures for understanding stochastic dynamics. In this paper, a dynamical approximation estimate is derived for a class of stochastic partial differential equations, by showing that the random ...
Blömker D.   +5 more
core   +2 more sources

Stochastic averaging lemmas for kinetic equations [PDF]

open access: yes, 2012
We develop a class of averaging lemmas for stochastic kinetic equations. The velocity is multiplied by a white noise which produces a remarkable change in time scale.
Lions, Pierre-Louis   +2 more
core   +4 more sources

Optimizing the Fractional Power in a Model with Stochastic PDE Constraints

open access: yesAdvanced Nonlinear Studies, 2018
We study an optimization problem with SPDE constraints, which has the peculiarity that the control parameter s is the s-th power of the diffusion operator in the state equation.
Geldhauser Carina, Valdinoci Enrico
doaj   +1 more source

A Schauder estimate for stochastic PDEs [PDF]

open access: yes, 2015
Considering stochastic partial differential equations of parabolic type with random coefficients in vector-valued H\"older spaces, we obtain a sharp Schauder estimate.
Du, Kai, Liu, Jiakun
core   +4 more sources

A comparison theorem for backward SPDEs with jumps

open access: yes, 2014
In this paper we obtain a comparison theorem for backward stochastic partial differential equation (SPDEs) with jumps. We apply it to introduce space-dependent convex risk measures as a model for risk in large systems of interacting ...
Sulem, Agnès   +2 more
core   +2 more sources

Scalar conservation laws with rough (stochastic) fluxes [PDF]

open access: yes, 2013
We develop a pathwise theory for scalar conservation laws with quasilinear multiplicative rough path dependence, a special case being stochastic conservation laws with quasilinear stochastic dependence.
Lions, Pierre-Louis   +2 more
core   +4 more sources

Solution theory of fractional SDEs in complete subcritical regimes

open access: yesForum of Mathematics, Sigma
We consider stochastic differential equations (SDEs) driven by a fractional Brownian motion with a drift coefficient that is allowed to be arbitrarily close to criticality in a scaling sense.
Lucio Galeati, Máté Gerencsér
doaj   +1 more source

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