Concordance invariants from higher order covers
Concordance invariants from higher order covers
复制标题
高阶覆盖的一致性不变量
DOI:
10.1016/j.topol.2012.03.014
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发表时间:
2008
影响因子:
0.6
通讯作者:
Stanislav Jabuka
中科院分区:
文献类型:
--
作者:
Stanislav Jabuka
We generalize the Manolescu–Owens smooth concordance invariant δ(K) of knots K⊂S3to invariants [Formula: see text] obtained by considering covers of order pn, with p a prime. Our main result shows that for any prime p≠2, the thus obtained homomorphism [Formula: see text] from the smooth concordance group to Z∞has infinite rank. We also show that unlike δ, these new invariants typically are not multiples of the knot signature, even for alternating knots. A significant portion of the article is devoted to exploring examples.