典型 发表于 2025-3-23 13:24:15
CR-Submanifolds of Almost Hermitian Manifolds,Let N be a n-dimensional almost Hermitian manifold with almost complex structure J and with Hermitian metric g. LetH be a real m-dimensional Riemannian manifold isometrically immersed in N.现存 发表于 2025-3-23 14:43:01
http://reply.papertrans.cn/39/3838/383798/383798_12.pngREP 发表于 2025-3-23 18:12:04
CR-Structures and Relativity,The main purpose of this chapter is to show that CR-structures on real hypersurfaces of a complex manifold have an interesting application to relativity. It is the merit of Roger Penrose to discover a correspondence between points of a Minkowski space and projective lines of a certain real hypersurface in a complex projective space (see (2.4)).tenosynovitis 发表于 2025-3-24 00:14:28
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CR-Structures and Pseudo-Conformal, Mappings,act manifolds (see Blair ,p. 62) are examples of ~R-manifolds. Non-trivial CRmanifolds appeared as boundaries of domains in complex spaces, which in fact are real hypersurfaces (i.e.,particular CR-submanifolds).引导 发表于 2025-3-24 08:17:07
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Paul Heinrich Heckmann,Elmar Träberth, i, j, k, ... taking on values in the range {i, ... , n}. TN and F(N) are respectively the tangent bundle to N and the algebra of differentiable functions on N. Also we denote by Κ (H) the module of differentiable sections of a vector bundle H.事与愿违 发表于 2025-3-24 23:11:41
Book 1986 in regional and theoretical economics; algebraic geometry interacts with physics; the Minkowsky lemma, coding theory and the structure of water meet one another in packing and covering theory; quantum fields, crystal defects and mathematical programming profit from homotopy theory; Lie algebras are