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arXiv 0902.2418math.DSmath.DG
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沿着流的轨道的移位映射的图像

Image of a shift map along the orbits of a flow

Sergiy Maksymenko

摘要:

设$(F_t)$是光滑流形$M$上的光滑流,$h:M\to M$是光滑保轨映射.研究了如下问题:假设对于$M$的每个点$z$,在$z$处存在光滑函数$f_z$的芽,使得在$z$附近有该$h(x)=F_{f_z(x)}(x)$ .能否将函数$(f_z)$粘合在一起,以在所有$M$上提供平滑的函数?这个问题与流动的重新参数化密切相关。我们描述了一个大类的流,上述问题可以解决,并表明它们具有以下性质:任何光滑流$(G_t)$的轨道重合的$(F_t)$是从$(F_t)$通过光滑的时间重新参数化。我们的主命题的证明使用了D.霍夫曼和L. N. Mann关于黎曼流形李群的有效作用直径的一些结果。

英文摘要:

Let $(F_t)$ be a smooth flow on a smooth manifold $M$ and $h:M\to M$ be a smooth orbit preserving map. The following problem is studied: suppose that for every point $z$ of $M$ there exists a germ of a smooth function $f_z$ at $z$ such that near $z$ we have that $h(x)=F_{f_z(x)}(x)$. Can the functions $(f_z)$ be glued together to give a smooth function on all of $M$? This question is closely related to reparametrizations of flows. We describe a large class of flows for which the above problem can be resolved, and show that they have the following property: any smooth flow $(G_t)$ whose orbits coincides with the ones of $(F_t)$ is obtained from $(F_t)$ by smooth reparametrization of time. The proof of our principal statement uses results of D. Hoffman and L. N. Mann about diameters of effective actions of Lie grous of Riemannian manifolds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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