FARCE
发表于 2025-3-21 16:46:29
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开始没有
发表于 2025-3-21 23:21:38
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惰性气体
发表于 2025-3-22 03:08:56
https://doi.org/10.1007/978-3-663-16029-8. Section 2.2 investigates the precise definition of a symmetry group of a system of differential equations, which requires knowledge of how the group elements actually transform the solutions. The corresponding infinitesimal method rests on the important concept of “prolonging” a group action to th
CRACK
发表于 2025-3-22 06:53:20
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stroke
发表于 2025-3-22 12:02:02
0072-5285 pplications to conservation laws, integrability conditions, completely integrable systems and soliton equations, and bi-Hamiltonian systems are covered in detai978-1-4684-0274-2Series ISSN 0072-5285 Series E-ISSN 2197-5612
漫步
发表于 2025-3-22 16:00:51
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Dendritic-Cells
发表于 2025-3-22 18:21:19
Group-Invariant Solutions,hly states that the solutions which are invariant under a given r-parameter symmetry group of the system can all be found by solving a system of differential equations involving . fewer independent variables than the original system. In particular, if the number of parameters is one less than the nu
Frisky
发表于 2025-3-23 00:47:26
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Oligarchy
发表于 2025-3-23 05:14:05
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Optometrist
发表于 2025-3-23 07:17:22
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