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arXiv 1111.6877math.GT
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透镜空间中的Poincare同调球与几乎单纽结

The Poincare homology sphere and almost simple knots in lens spaces

Kenneth L. Baker

摘要:

赫登在每个透镜空间中定义了两个纽结,通过与纽结的弗洛尔同调和亏格1的双尖赫格图的类比,可以将其看作是S ^[3]中两个三叶形的推广。拉斯穆森表明,当“左手”一个是在同调类的对偶的一个贝尔格结的第七型,它承认一个L-空间同调球手术。本文给出了L-空间同调球一定是Poincaré同调球的简单证明。

英文摘要:

Hedden defined two knots in each lens space that, through analogies with their knot Floer homology and doubly pointed Heegaard diagrams of genus one, may be viewed as generalizations of the two trefoils in S^3. Rasmussen shows that when the `left-handed' one is in the homology class of the dual to a Berge knot of type VII, it admits an L-space homology sphere surgery. In this note we give a simple proof that these L-space homology spheres are always the Poincaré homology sphere.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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