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Identifying weak focus and center in a convection model 期刊论文
APPLIED MATHEMATICS LETTERS, 2020, 卷号: 100, 页码: 7
作者:  Guo, Laigang;  Yu, Pei;  Chen, Yufu
收藏  |  浏览/下载:133/0  |  提交时间:2020/05/24
Convection model  3-dimensional quadratic system  Normal form  Limit cycle  
Strongly indefinite systems with critical Sobolev exponents and weights 期刊论文
APPLIED MATHEMATICS LETTERS, 2004, 卷号: 17, 期号: 8, 页码: 909-917
作者:  Han, PG
收藏  |  浏览/下载:92/0  |  提交时间:2018/07/30
Hamiltonian systems  dual variational functional method  (PS)c condition  critical point  
A note on the positive energy solutions for elliptic equations involving critical Sobolev exponents 期刊论文
APPLIED MATHEMATICS LETTERS, 2003, 卷号: 16, 期号: 7, 页码: 1105-1113
作者:  Cao, DM;  Han, PG
收藏  |  浏览/下载:146/0  |  提交时间:2018/07/30
Neumann problem  semilinear elliptic equation  critical point