Exact cohomology sequences with integral coefficients for torus actions
Exact cohomology sequences with integral coefficients for torus actions
复制标题
具有环面作用积分系数的精确上同调序列
DOI:
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发表时间:
2005
期刊:
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通讯作者:
V. Puppe
中科院分区:
文献类型:
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作者:
M. Franz;V. Puppe
Using methods applied by Atiyah in equivariant K-theory, Bredon obtained exact sequences for the relative cohomologies (with rational coefficients) of the equivariant skeletons of (sufficiently nice) T-spaces X, $T=(S^1)^n,$ with free equivariant cohomology $H_T^*(X;{\mathbb Q})$ over $H_T^*({\rm pt};{\mathbb Q})=H^*(BT;{\mathbb Q}).$ Here we characterise those finite T-CW complexes with connected isotropy groups for which an analogous result holds with integral coefficients.