It is proved that for a prescribed potential V there are many quasi-periodic solutions of nonlinear wave equations u(tt) - u(xx) + V(x)u +/- u(3) + O(vertical bar u vertical bar(5)) = subject to Dirichlet boundary conditions.
机构:
Hunan Normal Univ, Coll Math & Comp Sci, Changsha 410006, Hunan, Peoples R ChinaHunan Normal Univ, Coll Math & Comp Sci, Changsha 410006, Hunan, Peoples R China
Shi, Guanghua
Yan, Dongfeng
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Zhengzhou Univ, Sch Math & Stat, Zhengzhou 450001, Henan, Peoples R ChinaHunan Normal Univ, Coll Math & Comp Sci, Changsha 410006, Hunan, Peoples R China
机构:
Fudan Univ, Sch Math Sci, Shanghai 200433, Peoples R China
Binzhou Univ, Dept Math & Informat Sci, Binzhou 256600, Shandong, Peoples R ChinaFudan Univ, Sch Math Sci, Shanghai 200433, Peoples R China
机构:
Univ Naples Federico II, Dipartimento Matemat & Applicaz R Caccioppoli, I-80126 Naples, ItalyUniv Naples Federico II, Dipartimento Matemat & Applicaz R Caccioppoli, I-80126 Naples, Italy
Berti, Massimiliano
Bolle, Philippe
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Univ Avignon & Pays Vaucluse, Lab Anal Non Lineaire & Geometrie EA 2151, F-84018 Avignon, FranceUniv Naples Federico II, Dipartimento Matemat & Applicaz R Caccioppoli, I-80126 Naples, Italy