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arXiv math/0010166math.GTmath.SG
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四维流形的一个凸分解定理

A Convex decomposition theorem for four-manifolds

Selman Akbulut, Rostislav Matveyev

摘要:

证明了每一个光滑闭定向四维流形都可以分解为两个具有公共边界的余维零子流形。这些子流形中的每一个都具有伪凸边界的辛流形的结构。这意味着,特别是,每一个光滑闭单连通四流形是一个Stein域在一定的可收缩2-复形的补。

英文摘要:

We show that every smooth closed oriented four-manifold admits a decomposition into two co- dimension zero submanifolds with common boundary. Each of these submanifolds carries a structure of a symplectic manifold with pseudo-convex boundary. This imply, in particular, that every smooth closed simply-connected four-manifold is a Stein domain in the the complement of a certain contractible 2-complex.

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