The jumping nonlinearity problem revisited: an abstract approach
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Jumping nonlinearity, critical point theory, beam equation, wave equation, Schrödinger equationAbstrakt
We consider a class of nonlinear problems of the form $$ Lu+g(x,u)=f, $$ where $L$ is an unbounded self-adjoint operator on a Hilbert space $H$ of $L^{2}(\Omega)$-functions, $\Omega\subset\mathbb{R}^{N}$ an arbitrary domain, and $g\colon \Omega\times\mathbb{R}\rightarrow\mathbb{R}$ is a ``jumping nonlinearity'' in the sense that the limits $$ \lim_{s\rightarrow-\infty} \frac{g(x,s)}{s}=a \quad\text{\rm and}\quad \lim_{s\rightarrow\infty}\frac{g(x,s)}{s}=b $$ exist and ``jump'' over an eigenvalue of the operator $-L$. Under rather general conditions on the operator $L$ and for suitable $a< b$, we show that a solution to our problem exists for any $f\in H$. Applications are given to the beam equation, the wave equation, and elliptic equations in the whole space $\mathbb{R}^{N}$.Pobrania
Opublikowane
2003-06-01
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COSTA, David G. & TEHRANI, Hossein. The jumping nonlinearity problem revisited: an abstract approach. Topological Methods in Nonlinear Analysis [online]. 1 czerwiec 2003, T. 21, nr 2, s. 249–272. [udostępniono 3.7.2024].
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