Hölder continuity and boundedness estimates for nonlinear fractional equations in the Heisenberg group

M Manfredini, G Palatucci, M Piccinini… - The Journal of Geometric …, 2023 - Springer
We extend the celebrate De Giorgi-Nash-Moser theory to a wide class of nonlinear
equations driven by nonlocal, possibly degenerate, integro-differential operators, whose …

The obstacle problem and the Perron Method for nonlinear fractional equations in the Heisenberg group

M Piccinini - Nonlinear Analysis, 2022 - Elsevier
We study the obstacle problem related to a wide class of nonlinear integro-differential
operators, whose model is the fractional subLaplacian in the Heisenberg group. We prove …

Struwe's Global Compactness and energy approximation of the critical Sobolev embedding in the Heisenberg group

G Palatucci, M Piccinini, L Temperini - arXiv preprint arXiv:2308.01153, 2023 - arxiv.org
We investigate some of the effects of the lack of compactness in the critical Folland-Stein-
Sobolev embedding in very general (possible non-smooth) domains, by proving via De …

[PDF][PDF] Nonlocal Harnack inequality for fractional elliptic equations with Orlicz growth

SS Byun, H Kim, K Song - Bull. Lond. Math. Soc., 2023 - researchgate.net
NONLOCAL HARNACK INEQUALITY FOR FRACTIONAL ELLIPTIC EQUATIONS WITH
ORLICZ GROWTH 1. Introduction We investigate the following no Page 1 NONLOCAL …

Compact embeddings, eigenvalue problems, and subelliptic Brezis–Nirenberg equations involving singularity on stratified Lie groups

S Ghosh, V Kumar, M Ruzhansky - Mathematische Annalen, 2024 - Springer
The purpose of this paper is twofold: first we study an eigenvalue problem for the fractional p-
sub-Laplacian over the fractional Folland–Stein–Sobolev spaces on stratified Lie groups …

Optimal decay for solutions of nonlocal semilinear equations with critical exponent in homogeneous groups

N Garofalo, A Loiudice, D Vassilev - Proceedings of the Royal …, 2022 - cambridge.org
Optimal decay for solutions of nonlocal semilinear equations with critical exponent in
homogeneous groups Page 1 Proceedings of the Royal Society of Edinburgh, page 1 of 29 …

Regularity theory for nonlocal equations with general growth in the Heisenberg group

Y Fang, C Zhang - International Mathematics Research Notices, 2024 - academic.oup.com
We deal with a wide class of generalized nonlocal-Laplace equations, so-called nonlocal-
Laplace equations, in the Heisenberg framework. Under natural hypotheses on the-function …

Best constants in subelliptic fractional Sobolev and Gagliardo-Nirenberg inequalities and ground states on stratified Lie groups

S Ghosh, V Kumar, M Ruzhansky - arXiv preprint arXiv:2306.07657, 2023 - arxiv.org
In this paper, we establish the sharp fractional subelliptic Sobolev inequalities and
Gagliardo-Nirenberg inequalities on stratified Lie groups. The best constants are given in …

Nonlinear fractional equations in the Heisenberg group

G Palatucci, M Piccinini - arXiv preprint arXiv:2307.16763, 2023 - arxiv.org
We deal with a wide class of nonlinear nonlocal equations led by integro-differential
operators of order $(s, p) $, with summability exponent $ p\in (1,\infty) $ and differentiability …

Local regularity for nonlocal double phase equations in the Heisenberg group

Y Fang, C Zhang, J Zhang - arXiv preprint arXiv:2305.11690, 2023 - arxiv.org
We prove interior boundedness and H\"{o} lder continuity for the weak solutions of nonlocal
double phase equations in the Heisenberg group $\mathbb {H}^ n $. This solves a problem …