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二阶非线性微分方程的振动性 被引量:2
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作者 郑召文 史可富 韩红梅 《辽宁师范大学学报(自然科学版)》 CAS 2001年第1期1-3,共3页
研究了二阶非线性微分方程的振动性.其中利用推广的Riccatic变换,得到了方程(*)振动的新判据.这些判据改进并推广了许多已知的判据.
关键词 非线性微分方程 RICCATI变换 振动性 连续非凡解 判别准则 振动判据
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Multiple solutions for weighted nonlinear elliptic system involving critical exponents 被引量:3
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作者 NYAMORADI Nemat HSU Tsing San 《Science China Mathematics》 SCIE CSCD 2015年第1期161-178,共18页
In this paper, by using the idea of category, we investigate how the shape of the graph of h(x) affects the number of positive solutions to the following weighted nonlinear elliptic system: = ( N-2-2a 2. where 0 ... In this paper, by using the idea of category, we investigate how the shape of the graph of h(x) affects the number of positive solutions to the following weighted nonlinear elliptic system: = ( N-2-2a 2. where 0 is a smooth bounded domain in ]1N (N 〉 3), A, cr 〉 0 are parameters, 0 ≤ μ 〈 μa a 2 ' h(x), KI(X) and K2(x) are positive continuous functions in , 1 〈 q 〈 2, a, β 〉 1 and a + β = 2*(a,b) (2* (a, b) 2N = N-2(1+a-b) is critical Sobolev-Hardy exponent). We prove that the system has at least k nontrivial nonnegative solutions when the pair of the parameters (), r) belongs to a certain subset of N2. 展开更多
关键词 Caffarelli-Kohn-Nirenberg inequality variational method critical Hardy-Sobolev exponent mul-tiple positive solutions
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