Brezis-Nirenberg type problem for fractional sub-Laplacian on the Heisenberg group

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Main Authors: Naik, Vikram Yallapa, Dwivedi, Gaurav
Format: Preprint
Published: 2025
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author Naik, Vikram Yallapa
Dwivedi, Gaurav
author_facet Naik, Vikram Yallapa
Dwivedi, Gaurav
contents In this paper, we show the existence of a weak solution for a fractional sub-Laplace equation involving a term with the critical Sobolev exponent, namely, \begin{align*} (-Δ_\mathbb{H})^su - λu &= |u|^{Q^*_s -2}u \text{ in } Ω,\\ u &= 0 \text{ in } \mathbb{H}^N \setminus Ω, \end{align*} where $Ω\subseteq \mathbb{H}^N$ is bounded and has continuous boundary, $(-Δ_\mathbb{H})^s$ is the horizontal fractional Laplacian, $s \in (0,1), λ> 0,$ and $Q^*_s=\frac{2Q}{Q-2s}$ is the Sobolev critical exponent. This problem is motivated by the celebrated Brezis-Nirenberg problem \cite{brezis1983positive}.
format Preprint
id arxiv_https___arxiv_org_abs_2508_14990
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Brezis-Nirenberg type problem for fractional sub-Laplacian on the Heisenberg group
Naik, Vikram Yallapa
Dwivedi, Gaurav
Analysis of PDEs
35R03, 35R11, 35H20
In this paper, we show the existence of a weak solution for a fractional sub-Laplace equation involving a term with the critical Sobolev exponent, namely, \begin{align*} (-Δ_\mathbb{H})^su - λu &= |u|^{Q^*_s -2}u \text{ in } Ω,\\ u &= 0 \text{ in } \mathbb{H}^N \setminus Ω, \end{align*} where $Ω\subseteq \mathbb{H}^N$ is bounded and has continuous boundary, $(-Δ_\mathbb{H})^s$ is the horizontal fractional Laplacian, $s \in (0,1), λ> 0,$ and $Q^*_s=\frac{2Q}{Q-2s}$ is the Sobolev critical exponent. This problem is motivated by the celebrated Brezis-Nirenberg problem \cite{brezis1983positive}.
title Brezis-Nirenberg type problem for fractional sub-Laplacian on the Heisenberg group
topic Analysis of PDEs
35R03, 35R11, 35H20
url https://arxiv.org/abs/2508.14990