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arXiv 0704.2107math.AT
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三维空间中的Poincare对偶

Poincare Duality Pairs in Dimension Three

Beatrice Bleile

摘要:

我们扩展亨德里克斯的分类定理和Turaev的实现和分裂定理的庞加莱对偶复合物在三维庞加莱对偶对的相对情况。通过将Poincare对偶复形的结果限制到空边界的Poincare对偶对的情形,恢复了Poincare对偶复形的结果。在有向同伦等价的前提下,三维庞加莱对偶对根据其基本三重性(由基本群系统、定向特征和基本类在分类映射下的像组成)进行分类。利用导出的模范畴,我们提供了一个给定的三元组被实现的三维庞加莱对偶对的充要条件。关于分类和实现的结果给出了三维Poincare对偶对的分裂或分解定理,即给定的三维Poincare对偶对分解为两个三维Poincare对偶对的内部或边界连通和的条件。

英文摘要:

We extend Hendriks' classification theorem and Turaev's realisation and splitting theorems for Poincare duality complexes in dimension three to the relative case of Poincare duality pairs. The results for Poincare duality complexes are recovered by restricting the results to the case of Poincare duality pairs with empty boundary. Up to oriented homotopy equivalence, three-dimensional Poincare duality pairs are classified by their fundamental triple consisting of the fundamental group system, the orientation character and the image of the fundamental class under the classifying map. Using the derived module category we provide necessary and sufficient conditions for a given triple to be realised by a three-dimensional Poincare duality pair. The results on classification and realisation yield splitting or decomposition theorems for three-dimensional Poincare duality pairs, that is, conditions under which a given three-dimensional Poincare duality pair decomposes as interior or boundary connected sum of two three-dimensional Poincare duality pairs.

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