Nonlocal elliptic equations in bounded domains: a survey

X Ros-Oton - Publicacions matematiques, 2016 - JSTOR
In this paper we survey some results on the Dirichlet problem \left{_u=g^Lu=f_inR^n\Ω^inΩ\
right. for nonlocal operators of the form Lu\left(x\right)=PVR^n\left{u\left(x\right) …

[HTML][HTML] Density and tails of unimodal convolution semigroups

K Bogdan, T Grzywny, M Ryznar - Journal of Functional Analysis, 2014 - Elsevier
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[图书][B] Recent developments in nonlocal theory

G Palatucci, T Kuusi - 2017 - degruyter.com
This edited volume aims at giving an overview of recent advances in the theory and
applications of Partial Differential Equations and energy functionals related to the fractional …

Gradient estimates of harmonic functions and transition densities for Lévy processes

T Kulczycki, M Ryznar - Transactions of the American Mathematical Society, 2016 - ams.org
We prove gradient estimates for harmonic functions with respect to a $ d $-dimensional
unimodal pure-jump Lévy process under some mild assumptions on the density of its Lévy …

[HTML][HTML] Extension and trace for nonlocal operators

K Bogdan, T Grzywny, K Pietruska-Pałuba… - … Mathématiques Pures et …, 2020 - Elsevier
We prove an optimal extension and trace theorem for Sobolev spaces of nonlocal operators.
The extension is given by a suitable Poisson integral and solves the corresponding nonlocal …

[HTML][HTML] Dirichlet heat kernel for unimodal Lévy processes

K Bogdan, T Grzywny, M Ryznar - Stochastic Processes and their …, 2014 - Elsevier
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[HTML][HTML] Estimates of Dirichlet heat kernel for symmetric Markov processes

T Grzywny, KY Kim, P Kim - Stochastic Processes and their Applications, 2020 - Elsevier
We consider a large class of symmetric pure jump Markov processes dominated by isotropic
unimodal Lévy processes with weak scaling conditions. First, we establish sharp two-sided …

Boundary regularity and Hopf lemma for nondegenerate stable operators

F Grube - arXiv preprint arXiv:2410.00829, 2024 - arxiv.org
We prove sharp boundary H {\" o} lder regularity for solutions to equations involving stable
integro-differential operators in bounded open sets satisfying the exterior $ C^{1,\text {dini}} …

[HTML][HTML] Potential kernels, probabilities of hitting a ball, harmonic functions and the boundary Harnack inequality for unimodal Lévy processes

T Grzywny, M Kwaśnicki - Stochastic Processes and their Applications, 2018 - Elsevier
In the first part of this article, we prove two-sided estimates of hitting probabilities of balls, the
potential kernel and the Green function for a ball for general isotropic unimodal Lévy …

Asymptotic behaviour and estimates of slowly varying convolution semigroups

T Grzywny, M Ryznar, B Trojan - … Mathematics Research Notices, 2019 - academic.oup.com
We study the asymptotic formulas and estimates for the transition densities of isotropic
unimodal convolution semigroups of probability measures on under the assumption that its …