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arXiv 2007.13315math.DGmath.AP
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流形值曲线空间上的Sobolev度量

Sobolev metrics on spaces of manifold valued curves

Martin Bauer, Cy Maor, Peter W. Michor

AI总结:

该研究分析了流形值开、闭浸入曲线空间上阶数$n\ge2$的重参数化不变Sobolev度量的完备性,证明多类重要度量的Sobolev浸入射地与度量完备,还指出开曲线常系数Sobolev度量的不完备仅源于全消失曲线。

摘要:

我们研究了流形值开浸入曲线和闭浸入曲线空间上,阶数$n\ge 2$的重参数化不变Sobolev度量的完备性性质。特别地,针对几类重要的度量,我们证明了Sobolev浸入在度量意义下和测地意义下都是完备的(因此测地方程是全局适定的)。这些结果此前仅在取值于欧氏空间的闭曲线情形下已知。对于开曲线上的常系数Sobolev度量类,我们证明它们是度量不完备的,且这种不完备性仅由完全消失的曲线导致(这与低阶度量中出现的“局部”失效不同)。

英文摘要:

We study completeness properties of reparametrization invariant Sobolev metrics of order $n\ge 2$ on the space of manifold valued open and closed immersed curves. In particular, for several important cases of metrics, we show that Sobolev immersions are metrically and geodesically complete (thus the geodesic equation is globally well-posed). These results were previously known only for closed curves with values in Euclidean space. For the class of constant coefficient Sobolev metrics on open curves, we show that they are metrically incomplete, and that this incompleteness only arises from curves that vanish completely (unlike "local" failures that occur in lower order metrics).

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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