幾類含非局部項(xiàng)橢圓方程的解
[Abstract]:In this paper, we study the existence of solutions and multiple solutions for some kinds of elliptic partial differential equations with nonlocal terms by variational method. First, we consider the following Schrodinger-Poisson system where the k (x) sign is changed. Combined with the Nehari manifold and the principle of centralization compactness, we prove that the system has at least two nontrivial solutions under different conditions and methods. Secondly, we study the existence of solutions and infinite solutions for a class of quasilinear Schrodinger equations with variable potential. Under the condition of not satisfying the classical Ambrosetti-Rabinowitz condition (AR condition for short), the existence of infinite solutions of the equation is proved by using the local encircling theorem and the fountain theorem. Thirdly, we study the existence of solutions for fractional Schrodinger equations. Combining the rearrangement technique with the mountain pass theorem, we prove the existence of the ground state solution of the problem. Finally, we consider the following class of Kirchhoff equations with singular terms, in which the k (x) sign is changed. Combined with the Nehari manifold and the principle of centralization compactness, we prove that the system has at least two nontrivial solutions. This new situation cannot be dealt with by the method of literature, but this result can also be seen as a complement to their results.
【學(xué)位授予單位】:大連理工大學(xué)
【學(xué)位級(jí)別】:博士
【學(xué)位授予年份】:2016
【分類號(hào)】:O175.25
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