Abstract
This paper is concerned with the existence of positive solution to a class of singular fourth order elliptic equation of Kirchhoff type
under Navier boundary conditions, \(u=\triangle u=0\). Here \(\varOmega \subset {\mathbf {R}}^N\), \(N\ge 1\) is a bounded \(C^4\)-domain, \(0\in \varOmega \), h(x) and k(x) are positive continuous functions, \(\gamma \in (0,1)\), \(\alpha \in (0,1)\) and \(M:{\mathbf {R}}^+\rightarrow {\mathbf {R}}^+\) is a continuous function. By using Galerkin method and sharp angle lemma, we will show that this problem has a positive solution for \(\lambda > \frac{\mu }{\mu ^*m_0}\) and \(0<\mu <\mu ^*\). Here \(\mu ^*=\Big (\frac{N(N-4)}{4}\Big )^2\) is the best constant in the Hardy inequality. Besides, if \(\mu =0\), \(\lambda >0\) and h, k are Lipschitz functions, we show that this problem has a positive smooth solution. If \(h,k\in C^{2,\,\theta _0}(\overline{\varOmega })\) for some \(\theta _0\in (0,1)\), then this problem has a positive classical solution.
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The authors would like to thank the referees for their useful remarks and their careful reeding of the proofs presented in this paper.
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Ansari, H., Vaezpour, S.M. & Hesaaraki, M. Existence of positive solution for nonlocal singular fourth order Kirchhoff equation with Hardy potential. Positivity 21, 1545–1562 (2017). https://doi.org/10.1007/s11117-017-0484-y
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DOI: https://doi.org/10.1007/s11117-017-0484-y
Keywords
- Nonlinear Kirchhoff equation
- Galerkin method
- Hardy potential
- Singular elliptic equation
- Sharp angle lemma