Sign-changing Solutions for Fourth Order Elliptic Equation with Concave-convex Nonlinearities
Abstract - 100
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Keywords

Sign-changing solutions
Fourth order elliptic equation
Constraint variational method
Concave-convex nonlinearities
Quantitative deformation lemma

How to Cite

Zhang, D., & Zhang, Z. (2024). Sign-changing Solutions for Fourth Order Elliptic Equation with Concave-convex Nonlinearities. Journal of Advances in Applied & Computational Mathematics, 11, 1–16. https://doi.org/10.15377/2409-5761.2024.11.1

Abstract

In this paper, we study the following fourth order elliptic equation:

Δ²u - Δu + V(x)u = κ(x)|u|q-2u + |u|p-2u in RN,

where Δ² := Δ(Δ) is the biharmonic operator, 4 > N, 1 < q < 2 < p < 2* := 2N / (N - 4). Assuming that V(x) satisfies a class of coercive conditions and the nonnegative weighted function κ(x) belongs to Lp / (p-q)(RN), we obtain the existence of one sign-changing solution with the help of constraint variational method and quantitative deformation lemma.

The novelty of this paper is that when the nonlinearity is the combination of concave and convex functions, we are able to obtain the existence of sign-changing solutions. Some recent results are improved and generalized significantly.

https://doi.org/10.15377/2409-5761.2024.11.1
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Copyright (c) 2024 Danni Zhang, Ziheng Zhang

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