刘西民
个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:吉林大学
学位:博士
所在单位:数学科学学院
学科:基础数学
联系方式:ximinliu@dlut.edu.cn
电子邮箱:ximinliu@dlut.edu.cn
扫描关注
Symmetric group actions on homotopy S-2 x S-2
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论文类型:期刊论文
发表时间:2008-01-01
发表刊物:MONATSHEFTE FUR MATHEMATIK
收录刊物:SCIE
卷号:153
期号:1
页面范围:49-57
ISSN号:0026-9255
关键字:homotopy S-2 x S-2; S-4-action; Seiberg-Witten theory
摘要:Let X be a closed smooth 4-manifold which is homotopy equivalent to S-2 x S-2. In this paper we use Seiberg-Witten theory to prove that if X admits a spin symmetric group S-4 action of even type with b(2)(+) (X/S-4) = b(2)(+)(X), then as an element of R(S-4), Ind D-S4 (X) = k(1)(1 - theta) + k(2)(psi(1) - psi(2)) for some integers k(1) and k(2), where 1, theta, psi(1), psi(2) are irreducible characters of S-4 of degree 1, 1, 3, and 3 respectively.