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arXiv 1604.04037math.GT
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平凡Alexander多项式纽结的无限秩和项

An infinite-rank summand of knots with trivial Alexander polynomial

Min Hoon Kim, Kyungbae Park

摘要:

证明了由平凡Alexander多项式生成的纽结和谐群的子群中存在一个$\mathbb{Z}^\infty$ -被加数。为此,我们使用不变的Uppersons $Υ$最近推出的Ozsváth,Stipsicz和Szabó使用结弗洛尔同调。部分计算了三叶结的Whitehead二重化的$(n,1)$ -cable的$Υ$.对于这种计算的$Υ$,我们确定了一个充分条件,两个卫星结有相同的$Υ$的任何模式与非零卷绕数。

英文摘要:

We show that there exists a $\mathbb{Z}^\infty$-summand in the subgroup of the knot concordance group generated by knots with trivial Alexander polynomial. To this end we use the invariant Upsilon $Υ$ recently introduced by Ozsváth, Stipsicz and Szabó using knot Floer homology. We partially compute $Υ$ of $(n,1)$-cable of the Whitehead double of the trefoil knot. For this computation of $Υ$, we determine a sufficient condition for two satellite knots to have identical $Υ$ for any pattern with nonzero winding number.

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