The bifurcation diagram of an elliptic $P$-Kirchhoff-type problem with respect to the stiffness of the material

Document Type : Research Paper


1 Department of Mathematics, Faculty of Mathematical Sciences, University of Mazandaran, Babolsar, Iran

2 Department of Mathematics, Faculty of Basic sciences, Babol Noshirvani University of Technology, Babol, Iran


We study a superlinear and subcritical  $p$-Kirchhoff-type problem which is variational and depends upon a real parameter $\lambda$. The nonlocal term forces some of the fiber maps associated with the energy functional to have two critical points. This suggests multiplicity of solutions, and indeed, we show the existence of a
local minimum and a mountain pass-type solution. We characterize the first parameter $\lambda_{0}^{*}$ for which the local minimum has nonnegative energy when $\lambda \geq \lambda_{0}^{*}$. Moreover, we characterize the extremal parameter $\lambda^{*}$ for which if $\lambda > \lambda^{*}$; then, the only solution to the
$p$-Kirchhoff problem is the zero function. In fact, $\lambda^{*}$ can be characterized in terms of the best constant of Sobolev embeddings. We also study the asymptotic behavior of the solutions when $\lambda\downarrow 0$


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Volume 13, Issue 1
March 2022
Pages 2315-2331
  • Receive Date: 13 June 2021
  • Revise Date: 09 August 2021
  • Accept Date: 23 November 2021