Equivariant maps between sphere bundles over tori and KO-degree

Equivariant maps between sphere bundles over tori and KO-degree
复制标题

环面和 KO 度上的球丛之间的等变映射

DOI:
--
复制
发表时间:
2005
期刊:
影响因子:
--
通讯作者:
Y. Kametani
Y. Kametani
中科院分区:
--
文献类型:
--
作者:
M. Furuta;Y. Kametani

文献摘要

被引文献

相似文献

我们展示了环面上球丛之间的某些类等变映射不存在的结果。证明中使用了等变 KO 度的概念。作为 Seiberg-Witten 理论的应用,对于具有不定交集形式的连通闭定向自旋 4 流形,我们有一个由签名和一个由第一上同调群上的四杯积和从 Albanese 映射导出的 KO 理论中的一些映射确定的非负整数确定的第二 Betti 数的新界限。
We show a non-existence result for some class of equivariant maps between sphere bundles over tori. The notion of equivariant KO-degree is used in the proof. As an application to Seiberg-Witten theory, for a connected closed oriented spin 4-manifold with indefinite intersection form, we have a new bound of the second Betti number by the signature and a non-negative integer determined by the quadruple cup product on the first cohomology group and some maps in KO-theory induced from the Albanese map.