| 摘要 | 第1-5页 |
| Abstract | 第5-6页 |
| 1 Infinitely many solutions for a fourth-order nonlinear ellipticsystem | 第6-27页 |
| §1.1 Introduction | 第6-9页 |
| §1.2 The variational framework and preliminary results | 第9-16页 |
| §1.3 Existence results | 第16-27页 |
| 2 Multiplicity of solutions for some fourth-order nonlinear ellipticproblems with critical Sobolev exponent | 第27-52页 |
| §2.1 Introduction | 第27-30页 |
| §2.2 Preliminaries | 第30-36页 |
| §2.3 The proof of Theorem 2.1.1 | 第36-43页 |
| §2.4 The proof of Theorem 2.1.2 | 第43-52页 |
| Bibliography | 第52-55页 |
| Acknowledgements | 第55页 |