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In this article, we study the existence of sign-changing solutions for the following SchrSdinger equation
-△u + λV(x)u = K(x)|u|^p-2u x∈R^N, u→0 as |x|→ +∞,
2N where N ≥ 3, λ〉 0 is a parameter, 2 〈 p 〈 2N/N-2, and the potentials V(x) and K(x) satisfy some suitable conditions. By using the method based on invariant sets of the descending flow, we obtain the existence of a positive ground state solution and a ground state sign-changing solution of the above equation for small λ, which is a complement of the results obtained by Wang and Zhou in [J. Math. Phys. 52, 113704, 2011].  相似文献   
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