Cobordism of group actions

Cobordism of group actions
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群体行动的协调性

DOI:
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发表时间:
1966
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通讯作者:
A. Wasserman
A. Wasserman
中科院分区:
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文献类型:
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作者:
A. Wasserman

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设G是紧李群,M是紧无边界G流形,即G对M有可微作用的C流形。称M G-协边到零M <^ o 0,如果存在紧G流形Q,其中dQ = M.注意,在这种情况下,M G(M的不动点集)=<$QGM G和QG都分别是M,Q的闭子流形(变维)的不交并。设J>(MG,M)表示MG在M中的法丛,V(MG> M)->MG是[S]意义下的G-向量丛.陈述V(MG,M)=dv(QG,Q)的部分匡威由下式给出:
Let G be a compact Lie group and M a compact G manifold without boundary, i.e. a C manifold with a differentiate action of G on M. M is said to be G-cobordant to zero M <^ o 0 if there exists a compact G manifold Q with dQ = M. Note that in this case M G (the fixed point set of M) = ÔQGM G and QG are both disjoint unions of closed submanifolds (of varying dimension) of M, Q respectively. Let J>(MG, M) denote the normal bundle of M G in M; V(MG> M)->MG is a G-vector bundle in the sense of [S]. A partial converse to the statement V(MG, M) =dv(QG, Q) is given by