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arXiv 1202.4412math.GT
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纽结Dehn手术的Heegaard Floer亏格界

Heegaard Floer genus bounds for Dehn surgeries on knots

Stanislav Jabuka

摘要:

我们提供了一个新的障碍,一个合理的同源3球出现的Dehn手术上一个给定的结的3球。障碍的形式是一个不等式,涉及纽结的亏格、外科手术系数和3流形上的L-结构的计数,即具有最简单可能关联的Heegaard Floer群的spin-c结构。应用程序包括两个框架结的障碍,以产生相同的3-流形,障碍是特别有效的,当与家庭的框架结。我们介绍了合理的和完整的Dehn手术的合理同源3-球的一般,并使用我们的不等式提供的界限,在某些情况下,这些一般的精确值。我们还表明,积分和合理的德恩手术属之间的差异可以是任意大。

英文摘要:

We provide a new obstruction for a rational homology 3-sphere to arise by Dehn surgery on a given knot in the 3-sphere. The obstruction takes the form of an inequality involving the genus of the knot, the surgery coefficient, and a count of L-structures on the 3-manifold, that is spin-c structures with the simplest possible associated Heegaard Floer group. Applications include an obstruction for two framed knots to yield the same 3-manifold, an obstruction that is particularly effective when working with families of framed knots. We introduce the rational and integral Dehn surgery genera for a rational homology 3-sphere, and use our inequality to provide bounds, and in some cases exact values, for these genera. We also demonstrate that the difference between the integral and rational Dehn surgery genera can be arbitrarily large.

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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