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

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چکیده

Abstract The purpose of this paper is twofold: first we study an eigenvalue problem for the fractional p -sub-Laplacian over Folland–Stein–Sobolev spaces on stratified Lie groups. We apply variational methods to investigate problems. conclude positivity eigenfunction via strong minimum principle -sub-Laplacian. Moreover, deduce that simple and isolated. Secondly, utilising established properties, prove existence at least two weak solutions Nehari manifold technique a class subelliptic singular problems associated with also boundedness positive considered Moser iteration technique. results obtained here are new even case $$p=2$$ p = 2 $$\mathbb {G}$$ G being Heisenberg group.

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ژورنال

عنوان ژورنال: Mathematische Annalen

سال: 2023

ISSN: ['1432-1807', '0025-5831']

DOI: https://doi.org/10.1007/s00208-023-02609-7