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## Sublinear eigenvalue problems on compact Riemannian manifolds with applications in Emden–Fowler equations

### Tom 191 / 2009

Studia Mathematica 191 (2009), 237-246 MSC: 58J05, 35J60. DOI: 10.4064/sm191-3-5

#### Streszczenie

Let $(M,g)$ be a compact Riemannian manifold without boundary, with $\dim M\geq 3,$ and $f:\mathbb R \to \mathbb R$ a continuous function which is {sublinear} at infinity. By various variational approaches, existence of multiple solutions of the eigenvalue problem $$-{\mit\Delta}_{g} \omega+\alpha (\sigma) \omega= \tilde K(\lambda,\sigma)f(\omega),\ \quad \sigma\in M,\, \omega\in H_1^2(M),$$ is established for certain eigenvalues $\lambda>0$, depending on further properties of $f$ and on explicit forms of the function $\tilde K.$ Here, ${\mit\Delta}_{g}$ stands for the Laplace–Beltrami operator on $(M,g),$ and $\alpha,$ $\tilde K$ are smooth positive functions. These multiplicity results are then applied to solve Emden–Fowler equations which involve sublinear terms at infinity.

#### Autorzy

• Alexandru KristályDepartment of Economics
University of Babeş-Bolyai
400591 Cluj-Napoca, Romania
e-mail
• Vicenţiu RădulescuInstitute of Mathematics “Simion Stoilow"
014700 Bucureşti, Romania
and
Department of Mathematics
University of Craiova
200585 Craiova, Romania
e-mail

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