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A COMPACT EMBEDDING RESULT FOR NONLOCAL SOBOLEV SPACES AND MULTIPLICITY OF SIGN-CHANGING SOLUTIONS FOR NONLOCAL SCHRÖDINGER EQUATIONS
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作者 Xu ZHANG Hao ZHAI fukun zhao 《Acta Mathematica Scientia》 SCIE CSCD 2024年第5期1853-1876,共24页
For any s∈(0,1),let the nonlocal Sobolev space X^(s)(R^(N))be the linear space of Lebesgue measure functions from R^(N) to R such that any function u in X^(s)(R^(N))belongs to L2(R^(N))and the function(x,y)→(u(x)-u... For any s∈(0,1),let the nonlocal Sobolev space X^(s)(R^(N))be the linear space of Lebesgue measure functions from R^(N) to R such that any function u in X^(s)(R^(N))belongs to L2(R^(N))and the function(x,y)→(u(x)-u(y)√K(x-y)is in L^(2)(R^(N),R^(N)).First,we show,for a coercive function V(x),the subspace E:={u∈X^s(R^N):f_(R)^N}V(x)u^(2)dx<+∞}of X^(s)(R^(N))is embedded compactly into L^(p)(R^(N))for p\in[2,2_(s)^(*)),where 2_(s)^(*)is the fractional Sobolev critical exponent.In terms of applications,the existence of a least energy sign-changing solution and infinitely many sign-changing solutions of the nonlocal Schrödinger equation-L_(k)u+V(x)u=f(x,u),x∈R^N are obtained,where-L_(K)is an integro-differential operator and V is coercive at infinity. 展开更多
关键词 sign-changing solution integro-differential operator least energy variational method
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A NONTRIVIAL SOLUTION OF A QUASILINEAR ELLIPTIC EQUATION VIA DUAL APPROACH 被引量:1
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作者 Xianyong YANG Wei ZHANG fukun zhao 《Acta Mathematica Scientia》 SCIE CSCD 2019年第2期580-596,共17页
In this article, we are concerned with the existence of solutions of a quasilinear elliptic equation in R^N which includes the so-called modified nonlinear Schrodinger equation as a special case. Combining the dual ap... In this article, we are concerned with the existence of solutions of a quasilinear elliptic equation in R^N which includes the so-called modified nonlinear Schrodinger equation as a special case. Combining the dual approach and the nonsmooth critical point theory, we obtain the existence of a nontrivial solution. 展开更多
关键词 nontrivial solution QUASILINEAR ELLIPTIC equation NONSMOOTH critical point theory DUAL APPROACH
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R^3上分数阶Kirchhoff方程正解的多重性及集中性 被引量:1
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作者 顾光泽 吴鲜 +1 位作者 余渊洋 赵富坤 《中国科学:数学》 CSCD 北大核心 2019年第1期39-72,共34页
本文考虑如下分数阶Kirchhoff方程:{M(∫∫R^3×R^3|u(x)-u(y)|~2|x-y|3+2sdxdy)(-?)su(x)+V (x)u=f (u), x∈R^3,u∈H^s(R^3),其中M(t)=ε^(2s)a+ε^(4s-3)bt是Kirchhoff函数,3/4<s<1,ε>0是小参数,位势V是正连续函数且... 本文考虑如下分数阶Kirchhoff方程:{M(∫∫R^3×R^3|u(x)-u(y)|~2|x-y|3+2sdxdy)(-?)su(x)+V (x)u=f (u), x∈R^3,u∈H^s(R^3),其中M(t)=ε^(2s)a+ε^(4s-3)bt是Kirchhoff函数,3/4<s<1,ε>0是小参数,位势V是正连续函数且有全局极小,非线性项f连续且在无穷远处次临界增长.利用Ljusternik-Schnirelmann畴数理论,本文得到了正解个数与位势V全局极小集拓扑之间的关系,证明了当ε→0^+时,这些正解在H^s(R^3)中收敛到极限方程的基态解,且这些解集中在位势V的全局极小附近.此外也得到了解的衰减估计. 展开更多
关键词 分数阶Kirchhoff方程lLjusternik-Schnirelmann畴数理论 集中性 变分方法
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The existence and multiplicity of solutions of a fractional Schrdinger-Poisson system with critical growth 被引量:2
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作者 Yuanyang Yu fukun zhao Leiga zhao 《Science China Mathematics》 SCIE CSCD 2018年第6期1039-1062,共24页
In this paper, we study the existence and multiplicity of solutions for the following fractional Schrodinger-Poisson system:({ε2S(-△)Su+V(x)u+φu=|u|2*s-2+f(u)in R3ε2s(-△)sφ=u in R3(0.1)where 3/... In this paper, we study the existence and multiplicity of solutions for the following fractional Schrodinger-Poisson system:({ε2S(-△)Su+V(x)u+φu=|u|2*s-2+f(u)in R3ε2s(-△)sφ=u in R3(0.1)where 3/4〈s〈1,2*:+6/3-2s)is the fractional critical exponent for 3-dimension, the potential V : R3→ R is continuous and has global minima, and f is continuous and supercubic but subcritical at infinity. We prove the existence and multiplicity of solutions for System (0.1) via variational methods. 展开更多
关键词 fractional Schrodinger-Poisson system critical growth variational methods
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