Semilinear elliptic problems on unbounded subsets of the Heisenberg group
K. Tintarev · DOAJ (DOAJ: Directory of Open Access Journals) · 2001
In this paper we discuss the applications of an abstract version of concentration compactness to minimax problems. In particular, we prove the existence of solutions to semilinear elliptic problems on unbounded subsets of the Heisenberg group.