合并
发表于 2025-3-26 23:33:50
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观点
发表于 2025-3-27 01:17:08
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reserve
发表于 2025-3-27 08:10:57
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Meander
发表于 2025-3-27 09:26:53
1421-1750 er theory.Many partial differential equations (PDEs) that arise in physics can be viewed as infinite-dimensional Hamiltonian systems. This monograph presents recent existence results of nonlinear oscillations of Hamiltonian PDEs, particularly of periodic solutions for completely resonant nonlinear w
含糊其辞
发表于 2025-3-27 14:39:50
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