Solution theory of fractional SDEs in complete subcritical regimes
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. We …
with a drift coefficient that is allowed to be arbitrarily close to criticality in a scaling sense. We …
Prevalence of -irregularity and related properties
We show that generic H\" older continuous functions are $\rho $-irregular. The property of
$\rho $-irregularity has been first introduced by Catellier and Gubinelli (Stoc. Proc. Appl …
$\rho $-irregularity has been first introduced by Catellier and Gubinelli (Stoc. Proc. Appl …
A pathwise regularization by noise phenomenon for the evolutionary p-Laplace equation
We study an evolutionary p-Laplace problem whose potential is subject to a translation in
time. Provided the trajectory along which the potential is translated admits a sufficiently …
time. Provided the trajectory along which the potential is translated admits a sufficiently …
Regularization by noise for rough differential equations driven by Gaussian rough paths
We consider the rough differential equation with drift driven by a Gaussian geometric rough
path. Under natural conditions on the rough path, namely nondeterminism, and uniform …
path. Under natural conditions on the rough path, namely nondeterminism, and uniform …
Regularization by noise for some strongly non-resonant modulated dispersive PDEs
T Robert - arxiv preprint arxiv:2410.23051, 2024 - arxiv.org
In this work, we pursue our investigations on the Cauchy problem for a class of dispersive
PDEs where a rough time coefficient is present in front of the dispersion. We show that if the …
PDEs where a rough time coefficient is present in front of the dispersion. We show that if the …
Remarks on nonlinear dispersive PDEs with rough dispersion management
T Robert - arxiv preprint arxiv:2410.23038, 2024 - arxiv.org
In this work, we study the Cauchy problem for a class of dispersive PDEs where a rough time
coefficient is present in front of the dispersion. Under minimal assumptions on the …
coefficient is present in front of the dispersion. Under minimal assumptions on the …
A multiparameter Stochastic Sewing lemma and the regularity of local times associated to Gaussian sheets
We establish a multiparameter extension of the stochastic sewing lemma. This allows us to
derive novel regularity estimates on the local time of locally non-deterministic Gaussian …
derive novel regularity estimates on the local time of locally non-deterministic Gaussian …
Nonlinear PDEs with modulated dispersion II: Korteweg--de Vries equation
(Due to the limit on the number of characters for an abstract set by arxiv, the full abstract can
not be displayed here. See the abstract in the paper.) We study dispersive equations with a …
not be displayed here. See the abstract in the paper.) We study dispersive equations with a …
Pathwise methods in regularisation by noise
L Galeati - 2022 - bonndoc.ulb.uni-bonn.de
This thesis concerns the study of regularisation by noise phenomena for ODEs and PDEs. In
particular, it focuses on the use of so called pathwise techniques: our aim is to identify …
particular, it focuses on the use of so called pathwise techniques: our aim is to identify …
[PDF][PDF] Regularization by noise for some nonlinear dispersive PDEs
T Robert - Journées équations aux dérivées …, 2023 - webpage-tr-tristan-robert …
In the context of ODEs or transport PDEs, there are examples where adding a rough
stochastic perturbation to the equation at hand actually improves the well-posedness theory …
stochastic perturbation to the equation at hand actually improves the well-posedness theory …