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arXiv math/0608001math.GTmath.SG
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Covering spaces与Heegaard弗洛尔同调上的Q-分次

Covering spaces and Q-gradings on Heegaard Floer homology

Dan A. Lee, Robert Lipshitz

摘要:

Heegaard弗洛尔同调是由P. Ozsvath和Z. Szabo将一个3-流形Y与一族相对分次的阿贝尔群HF(Y,t)联系起来,这些群在Y上由Spin^c结构t索引。在Y是有理同调球的情形下,Ozsvath和Szabo将相对Z-分次提升为绝对Q-分次。这导致\bigoplus_{t\in Spin^c(Y)} HF(Y,t)的相对Q分级。本文通过研究覆盖空间的Heegaard弗洛尔同调,给出了这种相对Q-分次的另一种构造.

英文摘要:

Heegaard Floer homology, first introduced by P. Ozsvath and Z. Szabo, associates to a 3-manifold Y a family of relatively graded Abelian groups HF(Y,t), indexed by Spin^c structures t on Y. In the case that Y is a rational homology sphere, Ozsvath and Szabo lift the relative Z-grading to an absolute Q-grading. This induces a relative Q-grading on \bigoplus_{t\in Spin^c(Y)} HF(Y,t). In this paper we describe an alternate construction of this relative Q-grading by studying the Heegaard Floer homology of covering spaces.

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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