In this paper, we consider small perturbations of the KdV-mKdV equation u_t =-uxxx + 6 uux + 6 u2 ux on the real line with periodic boundary conditions. It is shown that the above equation admits a Cantor family of small amplitude quasi-periodic solutions under such perturbations. The proof is based on an abstract infinite dimensional KAM theorem.
机构:
Chongqing Technol & Business Univ, Sch Finance, Chongqing 400067, Peoples R ChinaChongqing Technol & Business Univ, Sch Finance, Chongqing 400067, Peoples R China
Lv, Xiumei
Shao, Tengwei
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Chongqing Technol & Business Univ, Sch Finance, Chongqing 400067, Peoples R ChinaChongqing Technol & Business Univ, Sch Finance, Chongqing 400067, Peoples R China
Shao, Tengwei
Chen, Jiacheng
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Southwestern Univ Finance & Econ, Sch Finance, Chengdu 611130, Peoples R ChinaChongqing Technol & Business Univ, Sch Finance, Chongqing 400067, Peoples R China