bradycardia
发表于 2025-3-21 17:36:02
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隐士
发表于 2025-3-21 21:44:56
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孤独无助
发表于 2025-3-22 01:25:56
An Introduction to Contact Geometry,A . on an odd-dimensional manifold . of dimension 2. + 1 is a one-form . such that the (2. + 1)-form Ω given by . defines a volume form on .. We observe that any manifold admitting a contact form is necessarily orientable, and that a contact form defines a natural orientation.
CRANK
发表于 2025-3-22 06:11:09
Finite Energy Planes and Periodic Orbits,In this chapter we will prove the main result on finite energy planes due to H. Hofer [.] (see also [.]). Namely, given any manifold . equipped with a contact form ., denote by . → . the associated contact structure and by .. the associated Reeb vector field.
commute
发表于 2025-3-22 12:43:20
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史前
发表于 2025-3-22 12:53:30
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Lice692
发表于 2025-3-22 20:50:05
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Servile
发表于 2025-3-23 00:42:47
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Organonitrile
发表于 2025-3-23 05:12:53
Disk Filling Methods and Applications,Let (., .) be a closed three dimensional contact manifold with overtwisted contact structure .. Then there exists a contractible periodic orbit for the Reeb vector field ...
镇痛剂
发表于 2025-3-23 06:04:51
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