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Critical groups at infinity, saddle point reduction and elliptic resonant problems 期刊论文
COMMUNICATIONS IN CONTEMPORARY MATHEMATICS, 2003, 卷号: 5, 期号: 5, 页码: 761-773
作者:  Liu, SB;  Li, SJ
收藏  |  浏览/下载：92/0  |  提交时间：2018/07/30
morse inequality  critical group  Lyapunov-Schmidt reduction  elliptic resonant problem  
Contractibility of level sets of functionals associated with some elliptic boundary value problems and applications 期刊论文
NODEA-NONLINEAR DIFFERENTIAL EQUATIONS AND APPLICATIONS, 2003, 卷号: 10, 期号: 2, 页码: 133-170
作者:  Liu, ZL;  Li, SJ
收藏  |  浏览/下载：112/0  |  提交时间：2018/07/30
critical point  elliptic boundary value problem  jumping nonlinearity  four nontrivial solutions  contractibility of level set  
Solutions to semilinear elliptic problems with combined nonlinearities 期刊论文
JOURNAL OF DIFFERENTIAL EQUATIONS, 2002, 卷号: 185, 期号: 1, 页码: 200-224
作者:  Li, SJ;  Wu, SP;  Zhou, HS
收藏  |  浏览/下载：86/0  |  提交时间：2018/07/30
elliptic problem  sublinear  superlinear  asymptotically linear  Mountain Pass Theorem  
Some minimax theorems on finding nontrivial critical points and their applications 期刊论文
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS, 1997, 卷号: 30, 期号: 7, 页码: 4135-4144
作者:  Li, SJ
收藏  |  浏览/下载：104/0  |  提交时间：2018/07/30
critical point  critical group  local linking  (PS) condition  resonance problem  elliptic boundary value problem  Hamiltonian system  wave equation