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首页> 外文期刊>Journal of the Mathematical Society of Japan >Classification of singular fibres of stable maps of 4-manifolds into 3-manifolds and its applications
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Classification of singular fibres of stable maps of 4-manifolds into 3-manifolds and its applications

机译:将4歧管稳定图的奇异纤维分类为3歧管及其应用

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摘要

In this paper we classify the singular fibres of stable maps of closed (possibly non-orientable) 4-manifolds into 3-manifolds up to the C~∞ equivalence. Furthermore, we obtain several results on the co-existence of the singular fibres of such maps. As a consequence, we show that under certain conditions, the Euler number of the source 4-manifold has the same parity as the total number of certain singular fibres. This generalises Saeki's result in the orientable case.
机译:在本文中,我们将闭合(可能是不可定向)的4个流形的稳定图的奇异纤维分为直到C〜∞等价的3个流形。此外,我们获得了关于这些图的奇异纤维共存的几个结果。结果,我们表明在某些条件下,源4流形的欧拉数与某些奇异纤维的总数具有相同的奇偶性。这将Saeki的结果推广到可定向的案例中。

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