Menthol
发表于 2025-3-21 19:04:20
书目名称Riemannian Geometry of Contact and Symplectic Manifolds影响因子(影响力)<br> http://impactfactor.cn/if/?ISSN=BK0830317<br><br> <br><br>书目名称Riemannian Geometry of Contact and Symplectic Manifolds影响因子(影响力)学科排名<br> http://impactfactor.cn/ifr/?ISSN=BK0830317<br><br> <br><br>书目名称Riemannian Geometry of Contact and Symplectic Manifolds网络公开度<br> http://impactfactor.cn/at/?ISSN=BK0830317<br><br> <br><br>书目名称Riemannian Geometry of Contact and Symplectic Manifolds网络公开度学科排名<br> http://impactfactor.cn/atr/?ISSN=BK0830317<br><br> <br><br>书目名称Riemannian Geometry of Contact and Symplectic Manifolds被引频次<br> http://impactfactor.cn/tc/?ISSN=BK0830317<br><br> <br><br>书目名称Riemannian Geometry of Contact and Symplectic Manifolds被引频次学科排名<br> http://impactfactor.cn/tcr/?ISSN=BK0830317<br><br> <br><br>书目名称Riemannian Geometry of Contact and Symplectic Manifolds年度引用<br> http://impactfactor.cn/ii/?ISSN=BK0830317<br><br> <br><br>书目名称Riemannian Geometry of Contact and Symplectic Manifolds年度引用学科排名<br> http://impactfactor.cn/iir/?ISSN=BK0830317<br><br> <br><br>书目名称Riemannian Geometry of Contact and Symplectic Manifolds读者反馈<br> http://impactfactor.cn/5y/?ISSN=BK0830317<br><br> <br><br>书目名称Riemannian Geometry of Contact and Symplectic Manifolds读者反馈学科排名<br> http://impactfactor.cn/5yr/?ISSN=BK0830317<br><br> <br><br>
带来墨水
发表于 2025-3-21 21:54:00
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Palter
发表于 2025-3-22 03:41:26
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nitroglycerin
发表于 2025-3-22 07:43:26
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Myofibrils
发表于 2025-3-22 12:03:07
3-Sasakian Manifolds,As with the last chapter we will give more of a survey and only a few proofs. Another survey of both history and recent work on 3-Sasakian manifolds is Boyer and Galicki .
开始没有
发表于 2025-3-22 13:56:41
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值得
发表于 2025-3-22 20:41:23
https://doi.org/10.1007/978-1-4757-3604-5Differential Geometry; Differential Topology; Manifolds; Riemannian geometry; curvature; manifold
漂浮
发表于 2025-3-22 23:35:59
Symplectic Manifolds,onal differentiable (..) manifold ..n together with a global 2-form Ω which is closed and of maximal rank, i.e., .Ω = 0, Ω. ≠ 0. By a .: (.., Ω.) → (.., Ω.) we mean a diffeomorphism . : .. → .. such that .*Ω. =Ω..
Cardioplegia
发表于 2025-3-23 04:42:21
Contact Manifolds, manifold is orientable. Also . has rank 2. on the Grassmann algebra ∧ ... at each point . ∈ . and thus we have a 1-dimensional subspace, {. ∈ ...|.(...) = 0}, on which . ≠ 0 and which is complementary to the subspace on which . = 0. Therefore choosing .. in this subspace normalized by .(..) = 1 we have a global vector field . satisfying ..
抛媚眼
发表于 2025-3-23 08:50:43
Associated Metrics,rtant for our study; many of these were already mentioned in Chapter 1. For more detail the reader is referred to Gray and Hervella , Kobayashi-Nomizu and Kobayashi-Wu ; also, despite its classical nature, the book of Yano contains helpful information on many of these structures.