Actions of groups of diffeomorphisms on one-manifolds

Actions of groups of diffeomorphisms on one-manifolds
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微分同胚群在单流形上的作用

DOI:
10.2969/aspm/07210441
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发表时间:
2013
期刊:
arXiv: Geometric Topology
影响因子:
--
通讯作者:
S. Matsumoto
S. Matsumoto
中科院分区:
--
文献类型:
--
作者:
S. Matsumoto

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用$\DC(M)_0 $表示连通$C ^\infty $流形$M $的紧支撑$C ^\infty $同态群的单位分支,用$\HR $表示$\R $的同胚群。我们证明了如果$M $是一个纤维在$S ^m $($m\geq2 $)上的闭流形,那么从$\DC(M)_0 $到$\HR $的任何同态都是平凡的.
Denote by $\DC(M)_0$ the identity component of the group of compactly supported $C^\infty$ diffeomorphisms of a connected $C^\infty$ manifold $M$, and by $\HR$ the group of the homeomorphisms of $\R$. We show that if $M$ is a closed manifold which fibers over $S^m$ ($m\geq 2$), then any homomorphism from $\DC(M)_0$ to $\HR$ is trivial.