开始没有
发表于 2025-3-30 09:27:37
J. Kevin Eckert,Mary Ittman Murrey. Possible extensions in three directions are discussed: infinite dimensional Banach (and Hilbert) manifolds, Finsler metrics and pseudo-Riemannian spaces, the latter including links with some relativistic spacetimes. Special emphasis is taken in the cleaning up of known techniques, the statement of
有权威
发表于 2025-3-30 14:53:30
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Rotator-Cuff
发表于 2025-3-30 18:58:20
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inspired
发表于 2025-3-30 20:41:05
https://doi.org/10.1057/9781403983671general notion than properness of a group action, but also to more fully understand the role of invariant functions in describing just about everything of interest in reduction.We show that a polite action of a symmetry group of a dynamical system admits reduction and reconstruction.
柏树
发表于 2025-3-31 03:50:23
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宇宙你
发表于 2025-3-31 06:27:21
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ADORE
发表于 2025-3-31 12:20:19
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Noisome
发表于 2025-3-31 13:44:33
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Spinous-Process
发表于 2025-3-31 21:14:44
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单挑
发表于 2025-4-1 01:03:41
Vortices on Closed Surfaces,1941) about vortex motion on multiply connected planar domains. Our main tool is the Green function ..(., ..) for the Laplace-Beltrami operator of (., .), interpreted as the stream function produced by a unit point vortex at .. ∈ .. Since the surface has no boundary, the vorticity distribution . has