学术论文

5. Xu, Xiaodan; de la Llave, Rafael; Wang, Fenfen*.  The existence of solutions for nonlinear elliptic equations: simple proofs and extensions of a paper by Y. Shi. J. Differential Equations 318 (2022), 20–57.

4.  Cheng, Hongyude la Llave, RafaelWang, Fenfen*. Response solutions to the quasi-periodically forced systems with degenerate equilibrium: a simple proof of a result of W Si and J Si and extensions. Nonlinearity 34 (2021), no. 1, 372–393.

3. Wang, Fenfen*de la Llave, Rafael. Response solutions to quasi-periodically forced systems, even to possibly ill-posed PDEs, with strong dissipation and any frequency vectors. SIAM J. Math. Anal. 52 (2020), no. 4, 3149–3191.

2. Wang, FenfenCheng, HongyuSi, Jianguo*. Response solution to ill-posed Boussinesq equation with quasi-periodic forcing of Liouvillean frequency. J. Nonlinear Sci. 30 (2020), no. 2, 657–710.

1. Si, Wen; Wang, Fenfen; Si, Jianguo*. Almost-periodic perturbations of non-hyperbolic equilibrium points via P?schel-Rüssmann KAM method. Commun. Pure Appl. Anal. 19 (2020), no. 1, 541–585.

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